Office 365 URLs and IP address ranges added

README.md

@@ -14,6 +14,7 @@ are available in one of the list. The list can be globally enabled or disabled i
 - [lists/google](lists/google) - known domains and hostnames from Google
 - [lists/ipv6-linklocal](ipv6-linklocal) - IPv6 link local prefix
 - [lists/microsoft](lists/microsoft) - known microsoft domains
+- [lists/microsoft-office365](lists/microsoft-office365) - known Office 365 URLs and IP address ranges
 - [lists/multicast](lists/multicast) - known IPv4 multicast CIDR blocks
 - [lists/public-dns-v4](lists/public-dns-v4) - IPv4 addresses and reverse of public DNS resolver
 - [lists/public-dns-v6](lists/public-dns-v6) - IPv6 addresses and reverse of public DNS resolver

tools/generate-office365.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import requests
+import xml.etree.ElementTree as ET
+import json
+
+url = 'https://support.content.office.net/en-us/static/O365IPAddresses.xml'
+r = requests.get(url)
+office365 = ET.fromstring(r.text)
+l = []
+for address in office365.iter('address'):
+    l.append(address.text.replace('*', ''))
+
+warninglist = {}
+warninglist['description'] = 'Office 365 URLs and IP address ranges'
+warninglist['list'] = l
+
+print (json.dumps(warninglist))