Fix Geolocation for Fastly IPv6 address space

MS-Customer 0 Reputation points
2026-03-16T16:52:21.7433333+00:00

Azure reports "Successful Login Outside US" because MS has old geolocation for Fastly IPv6 address space.

Example: 2a04:4e41:6401:83ad::e068:63ad is reported in Paris France.

However, checking at ARIN for this address shows that Fastly has provided a CSV with the GeoLocation of these IPv6 address space assignments:

https://search.arin.net/rdap/?query=2a04%3A4e41%3A6401%3A83ad%3A%3Ae068%3A63ad

https://ip-geolocation.fastly.com/

Reviewing the Fastly CSV shows that the address is within the 2a04:4e41:6401:8000::/52 allocation for Fair Oaks, CA, US.

Please update Azure GeoLocation information with registry-provided information such as the above.

Microsoft Security | Microsoft Entra | Other
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