Autonomous system
AS8075 MICROSOFT-CORP-MSN-AS-BLOCK
Hosting ARIN
IPv4 addresses
80.73M
1,271 prefixes
IPv6 prefixes
226
counted as prefixes, not addresses
Countries
1
mostly US
Flagged prefixes
0
none
Summary
Microsoft Corporation
cloud azure corporate
Microsoft's primary Autonomous System, carrying Azure, Microsoft 365, Outlook,
Xbox Live, Bing, and Microsoft's corporate traffic.
What it's used for
- Hosting Azure cloud workloads and Microsoft's first-party services.
- Serving Windows Update, Office/Microsoft 365, Teams, and related endpoints.
Notable
- Like other hyperscalers, an IP here means Microsoft/Azure is the host; the actual application could be first-party or a customer's Azure deployment.
- Microsoft publishes its service IP ranges and endpoints (Azure IP ranges JSON, Microsoft 365 URL/IP lists) so firewalls can allow-list them precisely.
Interesting
- Microsoft operates one of the largest private wide-area backbones in the world to interconnect its Azure regions.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1,497 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS8068- Registry name
- MICROSOFT-CORP-MSN-AS-BLOCK
- Registrant
- Microsoft Corporation
- Abuse contact
- abuse@microsoft.com
- Registered
- 1997-03-31
- Last changed
- 2013-09-04
- Status
- active
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere