Autonomous system
AS8069 MICROSOFT-CORP-MSN-AS-BLOCK
Hosting ARIN
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, AS8070 and 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.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.174 |
Transit providers
7 upstream, 0 downstream and 7 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 201 prefixes · 284K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 201 |
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
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 805 valid, 0 with no ROA
- ROAs
- 899 authorising AS8069
- ASPA
- no ASPA record
- IRR
- 32% registered · 260 of 805 announcements
- Route objects
- 269 naming AS8069
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere