diff --git a/objects/ip-port/definition.json b/objects/ip-port/definition.json
index b7be390..a91ed90 100644
--- a/objects/ip-port/definition.json
+++ b/objects/ip-port/definition.json
@@ -3,6 +3,7 @@
     "dst-port",
     "src-port",
     "domain",
+    "hostname",
     "ip"
   ],
   "attributes": {
@@ -40,7 +41,9 @@
         "External analysis"
       ],
       "ui-priority": 1,
-      "misp-attribute": "port"
+      "misp-attribute": "port",
+      "disable_correlation": true,
+      "multiple": true
     },
     "domain": {
       "description": "Domain",
@@ -49,7 +52,18 @@
         "External analysis"
       ],
       "ui-priority": 1,
-      "misp-attribute": "domain"
+      "misp-attribute": "domain",
+      "multiple": true
+    },
+    "hostname": {
+      "description": "Hostname",
+      "categories": [
+        "Network activity",
+        "External analysis"
+      ],
+      "ui-priority": 1,
+      "misp-attribute": "hostname",
+      "multiple": true
     },
     "ip": {
       "description": "IP Address",
@@ -58,11 +72,12 @@
         "External analysis"
       ],
       "ui-priority": 1,
-      "misp-attribute": "ip-dst"
+      "misp-attribute": "ip-dst",
+      "multiple": true
     }
   },
-  "version": 6,
-  "description": "An IP address (or domain) and a port seen as a tuple (or as a triple) in a specific time frame.",
+  "version": 7,
+  "description": "An IP address (or domain or hostname) and a port seen as a tuple (or as a triple) in a specific time frame.",
   "meta-category": "network",
   "uuid": "9f8cea74-16fe-4968-a2b4-026676949ac6",
   "name": "ip-port"