Autonomous system
AS8069 MICROSOFT-CORP-MSN-AS-BLOCK
Hosting ARIN
IPv4 addresses
283K
196 prefixes
IPv6 prefixes
0
counted as prefixes, not addresses
Countries
1
mostly US
Flagged prefixes
0
none
Summary
Microsoft Corporation
cloud hosting legacy
One of Microsoft's Autonomous Systems within the MICROSOFT-CORP-MSN-AS-BLOCK
range. It carries Azure and Microsoft online-service address space.
What it's used for
- Announcing Azure and Microsoft service prefixes — mostly small blocks carved out of Microsoft's large
20.0.0.0/8-derived allocations, alongside newer space such as145.190.0.0/16and parts of52.0.0.0/8.
Notable
- An address here means Microsoft is the host. What actually runs on it may be first-party (Microsoft 365, Bing, Windows services) or a third-party workload deployed on Azure, so the AS identifies the platform, not the application.
- Like most Azure space, these prefixes carry little or no reverse DNS. The authoritative way to know what a given Microsoft IP is for is Microsoft's own published Azure IP-range and Microsoft 365 endpoint lists.
- Microsoft splits its announcements across several ASNs in this block; which one originates a given prefix varies by service and region and is not a stable signal of what the prefix does. See [AS8068](https://asn.ipinfo.app/AS8068), [AS8070](https://asn.ipinfo.app/AS8070) and [AS8075](https://asn.ipinfo.app/AS8075).
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 | 196 |
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