474 lines
26 KiB
Plaintext
474 lines
26 KiB
Plaintext
==Phrack Inc.==
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Volume Two, Issue 24, File 8 of 13
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/^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\
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/^\ /^\
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/^\ Special Area Codes /^\
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/^\ /^\
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/^\ by >Unknown User< /^\
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/^\ /^\
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/^\ January 3, 1989 /^\
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/^\ /^\
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/^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\ /^\
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Greetings! I have compiled information about the SACs for your edification;
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these include 700, 800, and 900.
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Most telephone users from the United States are quite familiar with 800
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service: A number that they dial and incur NO charge (not even message units
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in most areas).
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Then there is 900 service, which is what most people perceive as 'value added,'
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i.e. you pay more for the information than for the transport of the call.
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These vary typically from 35 cents to a few dollars for either a timed service,
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or a 'as long as you like' duration-sensitive service. There are two
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sub-species of 900 service: AT&T and "everybody else."
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Finally, there is 700 service, which many people remember as Alliance
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Teleconferencing. This is the third "canonical" SAC. With few limitations,
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this SAC is given over to the IEC entirely.
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Let's look at these in more detail.
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800 Service
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~~~~~~~~~~~
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800 service is offered by various IECs. Each NXX in the 800 SAC is assigned to
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a given carrier, who is responsible for assigning numbers from that block to
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customers, and providing 10 digit translation.
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The carrier must have Feature Group D presence for originating calls from the
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originating exchange (either direct, or through an access tandem).
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In the future, when CCIS becomes wide-spread, a query will be made in the
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database [Who gets 1-800-985-1234?] and the call will be routed appropriately.
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To clarify: Now the carrier is determined by the NNX. In the future, the
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carrier will be determined by the entire 7 digits.
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A similar situation exists with 900 service. Each carrier can reserve NXXs
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from BellCore (the people who among a zillion other tasks are in charge of
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handing out prefixes and area codes). They're not cheap! To get the actual
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number is free (there are qualifications that I don't deal with), but to get it
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'turned on' in a LATA costs you money, depending on:
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(1) How many prefixes you're getting,
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(2) Whether it's 800 or 900 service; and,
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(3) How many Tandems/End Offices are in the LATA.
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It requires a discrete amount of labor for EACH office, because EACH routing
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table must be modified. However, I will be discussing 900 Service in more
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detail later in this file.
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When you, as Joe Customer, dial 1-800-222-1234 (made up number, please don't
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bother them) it will initiate the following sequence:
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1. If you are in an Electronic Office (DMS-100, DMS-200, 1A ESS, 5 ESS)
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the 800-222 will be translated to "AT&T" and will search for an
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opening in a trunk group marked for 800 origination. Should none be
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found, bump to step 3.
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2. If you are in a non-electronic office (SxS, XB, and some flavors of
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ESS), it will go to the access tandem that your office 'homes' on,
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where 800-222 will be translated to "AT&T."
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Note: If at this point, the number doesn't have a translation, you
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will get a "lose" recording from the CO.
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3. Find a trunk in a trunk group marked for 800 origination. Should none
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be found, give the customer a recording "Due to network congestion,
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your 800 call could not be completed" or die, or whatever. (Depends
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on phase of moon, etc.)
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4. The end office will the send the following pulse-stream (in MF):
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KP + II + 3/10D + ST + KP + 800 222 1234 + ST
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Note: This is a simplification; there are some fine points of ANI
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spills that are beyond the scope of this file.
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II = 2 information digits. Typical values are:
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00 normal ANI .. 10 digits follow
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01 ONI line ... NPA follows
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02 ANI failure ... NPA follows
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3/10D = 3 or 10 digits. Either the NPA, or the entire 10 digit
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number. KP and ST are control tones.
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5. The carrier receives all of this (and probably throws the ANI into the
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bit bucket) and translates the 800 number to what's called a PTN, or
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Plant Test Number (for example, 617-555-9111). Then, the call is
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routed AS IF the customer had dialed that 10 digit number. Of course,
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the billing data is marked as an 800 call, so the subscriber receiving
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the call pays the appropriate amount.
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Of the 800 possible NXXs, 409 are currently assigned. A long-distance carrier
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can get one 800 and four 900 numbers just for the paperwork. But to get more
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than that, you have to show that you're 70% full now, and demonstrate a real
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need for the capacity.
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I have included the entire 800-NXX to long-distance carrier translation table.
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Note that not every NXX is valid in every area.
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Revised 800/OCN Translation Table
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Effective October 10, 1988
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221 ATX 222 ATX 223 ATX 224 LDL 225 ATX
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226 MIC 227 ATX 228 ATX 229 TDX 230 NTK
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231 ATX 232 ATX 233 ATX 234 MCI 235 ATX
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236 SCH 237 ATX 238 ATX 239 DLT 240 SIR
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241 ATX 242 ATX 243 ATX 244 --- 245 ATX
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246 --- 247 ATX 248 ATX 249 --- 250 ---
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251 ATX 252 ATX 253 ATX 254 TTU 255 ATX
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256 LSI 257 ATX 258 ATX 259 --- 260 ---
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261 SCH 262 ATX 263 CAN 264 ICT 265 CAN
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266 CSY 267 CAN 268 CAN 269 FDG 270 ---
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271 --- 272 ATX 273 --- 274 MCI 275 ITT
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276 ONE 277 SNT 278 --- 279 MAL 280 ADG
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281 --- 282 ATX 283 MCI 284 MCI 285 ---
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286 --- 287 --- 288 MCI 289 MCI 290 ---
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291 --- 292 ATX 293 PRO 294 --- 295 ---
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296 --- 297 ARE 298 --- 299 CYT
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321 ATX 322 ATX 323 ATX 324 HNI 325 ATX
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326 UTC 327 ATX 328 ATX 329 TET 330 TET
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331 ATX 332 ATX 333 MCI 334 ATX 335 SCH
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336 ATX 337 FST 338 ATX 339 --- 340 ---
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341 ATX 342 ATX 343 ATX 344 ATX 345 ATX
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346 ATX 347 UTC 348 ATX 349 DCT 350 CSY
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351 ATX 352 ATX 353 --- 354 --- 355 ---
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356 ATX 357 --- 358 ATX 359 UTC 360 ---
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361 CAN 362 ATX 363 CAN 364 HNI 365 MCI
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366 UTC 367 ATX 368 ATX 369 TDD 370 TDD
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371 --- 372 ATX 373 TDD 374 --- 375 TNO
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376 --- 377 GTS 378 --- 379 --- 380 ---
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381 --- 382 ATX 383 TDD 384 FDT 385 CAB
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386 TBQ 387 CAN 388 --- 389 --- 390 ---
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391 --- 392 ATX 393 EXF 394 --- 395 ---
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396 --- 397 TDD 398 --- 399 ARZ
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421 ATX 422 ATX 423 ATX 424 ATX 425 TTH
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426 ATX 427 --- 428 ATX 429 --- 430 ---
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431 ATX 432 ATX 433 ATX 434 AGN 435 ATX
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436 IDN 437 ATX 438 ATX 439 --- 440 TXN
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441 ATX 442 ATX 443 ATX 444 MCI 445 ATX
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446 ATX 447 ATX 448 ATX 449 --- 450 USL
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451 ATX 452 ATX 453 ATX 454 ALN 455 ---
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456 MCI 457 ATX 458 ATX 459 --- 460 ---
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461 CAN 462 ATX 463 CAN 464 --- 465 CAN
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466 ALN 467 ICT 468 ATX 469 --- 470 ---
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471 ALN 472 ATX 473 --- 474 --- 475 TDD
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476 TDD 477 --- 478 AAM 479 --- 480 ---
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481 --- 482 ATX 483 --- 484 TDD 485 TDD
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486 TDX 487 --- 488 --- 489 TOM 490 ---
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491 --- 492 ATX 493 --- 494 --- 495 ---
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496 --- 497 --- 498 --- 499 ---
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521 ATX 522 ATX 523 ATX 524 ATX 525 ATX
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526 ATX 527 ATX 528 ATX 529 MIT 530 ---
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531 ATX 532 ATX 533 ATX 534 --- 535 ATX
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536 ALN 537 ATX 538 ATX 539 --- 540 ---
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541 ATX 542 ATX 543 ATX 544 ATX 545 ATX
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546 UTC 547 ATX 548 ATX 549 --- 550 CMA
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551 ATX 552 ATX 553 ATX 554 ATX 555 ATX
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556 ATX 557 ALN 558 ATX 559 --- 560 ---
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561 CAN 562 ATX 563 CAN 564 --- 565 CAN
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566 ALN 567 CAN 568 --- 569 --- 570 ---
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571 --- 572 ATX 573 --- 574 AMM 575 ---
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576 --- 577 GTS 578 --- 579 LNS 580 WES
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581 --- 582 ATX 583 TDD 584 TDD 585 ---
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586 ATC 587 LTQ 588 ATC 589 LGT 590 ---
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591 --- 592 ATX 593 TDD 594 TDD 595 ---
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596 --- 597 --- 598 --- 599 ---
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621 ATX 622 ATX 623 --- 624 ATX 625 NLD
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626 ATX 627 MCI 628 ATX 629 --- 630 ---
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631 ATX 632 ATX 633 ATX 634 ATX 635 ATX
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636 CQU 637 ATX 638 ATX 639 BUR 640 ---
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641 ATX 642 ATX 643 ATX 644 CMA 645 ATX
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646 --- 647 ATX 648 ATX 649 --- 650 ---
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651 --- 652 ATX 653 --- 654 ATX 655 ---
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656 --- 657 TDD 658 TDD 659 --- 660 ---
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661 CAN 662 ATX 663 CAN 664 UTC 665 CAN
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666 MCI 667 CAN 668 CAN 669 UTC 670 ---
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671 --- 672 ATX 673 TDD 674 TDD 675 ---
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676 --- 677 --- 678 MCI 679 --- 680 ---
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681 --- 682 ATX 683 MTD 684 --- 685 ---
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686 LGT 687 NTS 688 --- 689 --- 690 ---
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691 --- 692 ATX 693 --- 694 --- 695 ---
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696 --- 697 --- 698 NYC 699 PLG
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720 TGN
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721 --- 722 ATX 723 --- 724 RTC 725 SAN
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726 UTC 727 MCI 728 TDD 729 UTC 730 ---
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731 --- 732 ATX 733 UTC 734 --- 735 UTC
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736 UTC 737 MEC 738 MEC 739 --- 740 ---
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741 MIC 742 ATX 743 EDS 744 --- 745 ---
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746 --- 747 TDD 748 TDD 749 TDD 750 ---
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751 --- 752 ATX 753 --- 754 TSH 755 ---
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756 --- 757 TID 758 --- 759 MCI 760 ---
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761 --- 762 ATX 763 --- 764 AAM 765 ---
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766 --- 767 UTC 768 SNT 769 --- 770 GCN
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771 SNT 772 ATX 773 CUX 774 --- 775 ---
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776 UTC 777 MCI 778 UTC 779 TDD 780 TDD
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781 --- 782 ATX 783 ALN 784 ALG 785 SNH
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786 *1 787 --- 788 --- 789 TMU 790 ---
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791 --- 792 ATX 793 --- 794 --- 795 ---
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796 --- 797 TID 798 TDD 799 ---
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821 ATX 822 ATX 823 THA 824 ATX 825 MCI
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826 ATX 827 UTC 828 ATX 829 UTC 830 ---
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831 ATX 832 ATX 833 ATX 834 --- 835 ATX
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836 TDD 837 TDD 838 --- 839 VST 840 ---
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841 ATX 842 ATX 843 ATX 844 LDD 845 ATX
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846 --- 847 ATX 848 ATX 849 --- 850 TKC
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851 ATX 852 ATX 853 --- 854 ATX 855 ATX
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856 --- 857 TLS 858 ATX 859 --- 860 ---
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861 --- 862 ATX 863 ALN 864 TEN 865 ---
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866 --- 867 --- 868 SNT 869 UTC 870 ---
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871 --- 872 ATX 873 MCI 874 ATX 875 ALN
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876 MCI 877 UTC 878 ALN 879 --- 880 NAS
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881 NAS 882 ATX 883 --- 884 --- 885 ATX
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886 ALN 887 ETS 888 MCI 889 --- 890 ---
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891 --- 892 ATX 893 --- 894 --- 895 ---
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896 TXN 897 --- 898 CGI 899 TDX
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921 --- 922 ATX 923 ALN 924 --- 925 ---
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926 --- 927 --- 928 CIS 929 --- 930 ---
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931 --- 932 ATX 933 --- 934 --- 935 ---
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936 RBW 937 MCI 938 --- 939 --- 940 TSF
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941 --- 942 ATX 943 --- 944 --- 945 ---
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946 --- 947 --- 948 --- 949 --- 950 MCI
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951 BML 952 ATX 953 --- 954 --- 955 MCI
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956 --- 957 --- 958 *2 959 *2 960 CNO
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961 --- 962 ATX 963 SOC 964 --- 965 ---
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966 TDX 967 --- 968 TED 969 TDX 970 ---
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971 --- 972 ATX 973 --- 974 --- 975 ---
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976 --- 977 --- 978 --- 979 --- 980 ---
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981 --- 982 ATX 983 WUT 984 --- 985 ---
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986 WUT 987 --- 988 WUT 989 TDX 990 ---
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991 --- 992 ATX 993 --- 994 --- 995 ---
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996 VOA 997 --- 998 --- 999 MCI
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Notes
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~~~~~
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*1 -- Released For Future Assignment
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*2 -- These NXX codes are generally reserved for test applications; They
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may be reserved for Access Tandem testing from an End Office.
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Note also: The following NXXs are dedicated for RCCP (Radio Common Carrier
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Paging) under the discretion of the local exchange carrier:
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202, 212, 302, 312, 402, 412, 502, 512, 602, 612, 702, 712, 802, 812, 902,
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and 912.
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OCN Reference List
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~~~~~~~~~~~~~~~~~~
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ADG - Advantage Network, Inc. AGN - AMRIGON
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ALG - Allnet Communication Services AMM - Access Long Distance
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AAM - ALASCOM ARE - American Express TRS
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ARZ - AmeriCall Corporation (Calif.) ATC - Action Telecom Co.
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ATX - AT&T BML - Phone America
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BUR - Burlington Tel. CAB - Hedges Communications
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CAN - Telcom Canada CNO - COMTEL of New Orleans
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CQU - ConQuest Comm. Corp CSY - COM Systems
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CUX - Compu-Tel Inc. CYT - ClayDesta Communications
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DCT - Direct Communications, Inc. DLT - Delta Communications, Inc.
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EDS - Electronic Data Systems Corp. ETS - Eastern Telephone Systems, Inc.
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EXF - Execulines of Florida, Inc. FDG - First Digital Network
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FDN - Florida Digital Network FDT - Friend Technologies
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FST - First Data Resources GCN - General Communications, Inc.
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GTS - Telenet Comm. Corp. HNI - Houston Network, Inc.
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ITT - United States Transmission System LDD - LDDS-II, Inc.
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LDL - Long Distance for Less LGT - LITEL
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LNS - Lintel Systems LSI - Long Distance Savers
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LTQ - Long Distance for Less MAL - MIDAMERICAN
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MCI - MCI Telecommunications Corp. MDE - Meade Associates
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MEC - Mercury, Inc. MIC - Microtel, Inc.
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MIT - Midco Communications MTD - Metromedia Long Distance
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NLD - National Data Corp. NTK - Network Telemanagement Svcs.
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NTS - NTS Communications ONC - OMNICALL, Inc.
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ONE - One Call Communications, Inc. PHE - Phone Mail, Inc.
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PLG - Pilgrim Telephone Co. PRO - PROTO-COL
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RBW - R-Comm RTC - RCI Corporation
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SAN - Satelco SCH - Schneider Communications
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SDY - TELVUE Corp. SIR - Southern Interexchange Services
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SLS - Southland Systems, Inc. SNH - Sunshine Telephone Co.
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SNT - SouthernNet, Inc. SOC - State of California
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TBQ - Telecable Corp. TDD - Teleconnect
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TDX - Cable & Wireless Comm. TED - TeleDial America
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TEM - Telesystems, Inc. TEN - Telesphere Network, Inc.
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TET - Teltec Savings Communications Co TGN - Telemanagement Consult't Corp.
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THA - Touch America TID - TMC South Central Indiana
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TKC - TK Communications, Inc. TLS - TELE-SAV
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TMU - Tel-America, Inc. TNO - ATC Cignal Communications
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TOM - TMC of Montgomery TOR - TMC of Orlando
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TSF - SOUTH-TEL TSH - Tel-Share
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TTH - Tele Tech, Inc. TTU - Total-Tel USA
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TXN - Tex-Net USL - U.S. Link Long Distance
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UTC - U.S. Telcom, Inc. (U.S. Sprint) VOA - Valu-Line
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VST - STAR-LINE WES - Westel
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WUT - Western Union Telegraph Co.
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NOTE: Where local telcos, such as Illinois Bell, offer 800 service, they
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purchase blocks of numbers from AT&T on prefixes assigned to AT&T. They
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are free to purchase blocks of numbers from any carrier of their choice
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however.
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This list also applies to the 900/OCN Translation Table (presented later
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in this file).
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900 Service
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~~~~~~~~~~~
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As I mentioned earlier there are two flavors of 900 service, AT&T and
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"everybody else." Everybody else is handled exactly as the 800 service above,
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except the IEC will probably use the ANI information to send you a bill
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(either directly, or through your BOC, each situation governed by applicable
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tariffs and contractual arrangements between the IEC and the BOC).
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AT&T 900 is a curious monster indeed. It was designed as a "mass termination"
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service. When you dial a 900 by AT&T (such as the "hear space shuttle
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mission audio" number) you get routed to one of twelve "nodes" strewn
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throughout the country. These nodes are each capable of terminating 9,000
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calls >PER SECOND<. There are several options available where the customer
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and/or the IP pay for all/part of the call. The big difference between 800 and
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AT&T 900 is >NOT< "who pays for the call" (there are free 900 numbers), but
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"how many people can it handle at once." The IP is responsible for providing
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program audio. AT&T is prohibited from providing audio-program services (i.e.
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tape recorded messages). As with any rule, there are exceptions to these as
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well.
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I have included the entire 900-NXX to long-distance carrier translation table.
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Revised 900/OCN Translation Table
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Effective October 10, 1988
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Please note that this differs from the 800 table, because much fewer of the 900
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NXXs are assigned.
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NXX OCN NXX OCN NXX OCN NXX OCN NXX OCN
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200 ATX 202 Ameritech 210 ATX 220 ATX 221 TDX
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222 ONC 223 TDX 225 Pac. Bell 226 MCI 233 TDX
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234 TEN 240 U.S. West 248 Ameritech 250 ATX 258 TEN
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254 TTU 255 SNT 260 ATX 264 ADG 266 CSY
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272 Bell Atl. 273 CAN 275 ITT 280 Ameritech 282 LGT
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283 Pac. Bell 288 GTE N.west 297 CAN 300 ATX 301 Ameritech
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302 Ameritech 303 Pac. Bell 321 TEN 322 TDX 327 ETS
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328 ATX 331 TET 332 PLG 333 U.S. West 335 Bell Atl.
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342 ATX 344 ATX 345 ALN 346 United Tel. 350 ATX
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364 GTE N.West 366 ONC 369 TEN 370 ATX 377 GTS
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386 United Tel. 388 SNT 399 ARZ 400 ATX 407 ATX
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410 ATX 420 ATX 422 ALN 426 PLG 428 Ameritech
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430 U.S. West 444 ONC 445 PHE 446 MCI 450 Ameritech
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451 CAN 456 TEN 463 United Tel. 478 AAM 479 ARZ
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480 ATX 483 GTE Midwest 488 ONC 490 U.S. West 500 ATX
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505 Pac. Bell 520 ATX 529 MIT 536 BUR 540 ALN
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543 ALN 545 GTE Calif. 550 ALN 555 ATX 567 ALN
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580 U.S. West 590 ATX 595 CAN 600 ATX 620 Ameritech
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624 Pac. Bell 626 CSY 628 Ameritech 630 CAN 633 MIT
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639 PLG 643 CAN 645 CAN 650 ATX 654 TEN
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656 SNT 660 ATX 661 United Tel. 663 MDE 665 ALN
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666 ONC 670 CAN 677 CAN 678 MCI 680 ATX
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686 LTG 690 CAN 698 NY Tel. 699 PLG 701 Bell Atl.
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710 TGN 720 ATX 722 Pac. Bell 724 RTC 725 SNT
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727 GTE Calif. 730 ATX 739 CSY 740 ATX 741 TEN
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746 ITT 750 CAN 753 ALN 765 ALN 773 ATX
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777 Pac. Bell 778 Ameritech 780 Ameritech 786 ATX 790 CAN
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792 CAN 801 Bell Atl. 820 ATX 830 CAN 843 Pac. Bell
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844 Pac. Bell 847 United Tel. 850 ATX 860 ATX 866 AAM
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870 CAN 872 TEN 887 ETS 888 CIS 900 TDX
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901 Bell Atl. 903 ATX 909 ATX 924 Ameritech 932 ATX
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948 ARZ 949 MIC 963 TEN 970 MIC 971 MIC
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972 MIC 973 MIC 974 ALN 975 ALN 976 ATX
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988 MCI 990 MCI 991 ALG 993 SNT 999 TEN
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700 Service
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~~~~~~~~~~~
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The last SAC we'll deal with is 700. I've seen ads on late-night television
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for Group Access Bridging service (GAB) under 700 numbers, with an elephantine
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dialing sequence. The one that comes to mind is 10041-1-700-777-7777. If you
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were to dial 1-700-555-4141 you will hear a recording announcing your
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Equal-Access carrier. (Some carriers ignore the last four digits, and any
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700-555 number will give the announcement).
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This is signalled the same as 800 service, and may or may not be billed
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ENTIRELY at the discretion of the IEC. In New York, under PSC tariff, you can
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order 900 and/or 700 blocking as well as 976, 970, 550, and 540 blocking in
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various combinations.
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What in ONE carrier might be a customer service hotline (Dial 1-700-I AM LOST)
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might for another be a revenue product. There is LITTLE standardization of 700
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usage from IEC to IEC.
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The one last dialing pattern that is worth mentioning is what's called, "cut
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through dialing." Try dialing 10220. If Western Union comes to your
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town, you'll get a FG-A style dial tone. Presumably if you had a Western
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Union "Calling Card" you could dial a call.
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Glossary
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~~~~~~~~
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ANI - Automatic Number Identification. An MF sequence that identifies your
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line for toll billing information. Often confused with ANAC (Automatic
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Number Announcement Circuit) which reads your number back in a
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synthesized voice.
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BOC - Bell Operating Company. An often misused term that in general usage
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means, "Your local exchange carrier." Since most of the telephones in
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the country are served by what used to be the Bell system, we tend to use
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the term. The proper term in this case, however IS "Exchange Carrier
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[EC]" They provide service within your LATA.
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FG-A - Feature Group A. Line Side termination for Long Distance carriers. The
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old 555-1234 for Widget Telephone Company then dial an access code and
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the number style dialing is called FG-A.
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FG-B - Feature Group B. Trunk Side termination for Long Distance carriers.
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(aka ENFIA B). 950 service. This is LATA wide service, and doesn't
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cost the customer message units. ANI is only provided when the trunks
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terminate in the End Office (as opposed to an access tandem).
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FG-D - Feature Group D. Trunk Side termination. Provides 10xxx dialing, 1+
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pre-subscription dialing, and Equal Access 800/900 service. Only
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available in electronic offices and some 5XB offices (through a beastie
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|
called an Adjunct Frame.)
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GAB - Group Audio Bridging. Where several people call the same number, to talk
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to other people calling the same number. "Party" or "Chat" lines.
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IEC - Inter-Exchange Carrier. Someone who actually carries calls from place to
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place. AT&T, Sprint, MCI are all IECs.
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IP - Information Provider. Someone who sells a value-added service over the
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telephone. Where you pay for the INFORMATION you're receiving, as well as
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the cost of TRANSPORT of the call.
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NXX - Notation convention for what used to be called a "prefix". N represents
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the digits 2 through 9, and X represents the digits 0 through 9. There
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are 800 valid NXX combinations, but some are reserved for local use.
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(411 for Directory, 611 for Repair Bureau, 911 for emergency, etc.)
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ONI - Operator Number Identification. In areas with some styles of party-line
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service, the CO cannot tell who you are, and the operator will come on
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and say, "What number are you calling from?". You can lie, they have to
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trust you. They MAY know which PREFIX you're coming from, though.
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PTN - Plant Test Number. A regular 10 digit number assigned with your inward
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WATS line. This may NOT be a 'dialable' number from the local CO. (A
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friend has a WATS line in Amherst, MA [413-549,
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dial the PTN locally, but you can if you come in on a toll trunk.)
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SAC - Special Area Code. Bellcore speak for area codes that aren't really
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places, but classes of service.
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_______________________________________________________________________________
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