Microsoft 365 URL and IP requirements

Source history: extracted from the page's source file at a commit; shared includes are not expanded

1. Opt-in31 Jul 2025 Now: You can turn it on early; the default is unchanged

1. 31 Jul 2025 14 months agoOpt-inwas 06/30/2025 · postponed +4 weeks · seen 31 Jul 2025
   • Microsoft 365 URLs and IP address rangesRequirement

Requirements, exceptions and scope

• Microsoft 365 URLs and IP address rangesRequirementExceptionScopeRecommendation6 conditions4 passages
• Microsoft 365 Unified DomainsRequirementException2 conditions3 passages

Extracted automatically from Microsoft's wording. Confirm dates, conditions and whether they apply to you in the source before acting; a month or quarter is a window, not a day.

How this timeline changed

Changes between ChangeIntel's readings of the page, between commits of its source file where Microsoft publishes it, in Internet Archive copies of pages that keep no other history, and entries from Microsoft's own change log (dated as Microsoft dates them). Edits between readings that neither records are unknown.

1. 31 Jul 2025
   Postponed +4 weeks Microsoft 365 URLs and IP address rangesMicrosoft's source, commit 12a0f36

   06/30/2025→07/31/2025
2. 30 Jun 2025
   Postponed +4 weeks Microsoft 365 URLs and IP address rangesMicrosoft's source, commit 27b1630

   05/30/2025→06/30/2025
3. 30 May 2025
   Postponed +4 weeks Microsoft 365 URLs and IP address rangesMicrosoft's source, commit 1e565e0

   04/30/2025→05/30/2025
4. 30 Apr 2025
   Postponed +4 weeks Microsoft 365 URLs and IP address rangesMicrosoft's source, commit 9c579e1

   04/02/2025→04/30/2025
5. 7 Apr 2025
   Postponed +4 weeks Microsoft 365 URLs and IP address rangesMicrosoft's source, commit f1acb2d

   02/28/2025→04/02/2025