Bingbot
Bing crawler IP ranges.
Microsoft
Microsoft publishes Bing crawler ranges as JSON. ASNs here are illustrative groupings—adjust to match your internal peering and cloud maps.
Autonomous systems
Microsoft — core
Commonly associated with Microsoft Corp. Not sufficient alone to authenticate Bingbot.
Announced under this company
AS8075
Microsoft Azure
Azure-related ASNs appear in many operator lists; use official Azure IP JSON for allowlists.
Announced under this company
AS8075AS12076
Published ranges
Official documentation and feeds for each product—open the links for current ranges and verification guidance.