AS8069 — MICROSOFT-CORP-MSN-AS-BLOCK
Network type: hosting
AS8069 announces 198 IPv4 prefixes covering 283,136 addresses and 0 IPv6 prefixes.
About this network
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 as 145.190.0.0/16 and parts of 52.0.0.0/8.
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.
Announced prefixes
- 4.213.247.0/24
- 13.104.82.0/24
- 20.33.0.0/22
- 20.33.4.0/23
- 20.33.6.0/24
- 20.33.8.0/21
- 20.33.16.0/20
- 20.33.32.0/19
- 20.33.64.0/20
- 20.33.80.0/23
- 20.33.83.0/24
- 20.33.84.0/22
- 20.33.88.0/22
- 20.33.92.0/23
- 20.33.95.0/24
- 20.33.96.0/19
- 20.33.128.0/21
- 20.33.136.0/23
- 20.33.138.0/24
- 20.33.140.0/23
- 20.33.143.0/24
- 20.33.144.0/23
- 20.33.147.0/24
- 20.33.148.0/22
- 20.33.152.0/23
- 20.33.155.0/24
- 20.33.156.0/22
- 20.33.160.0/23
- 20.33.163.0/24
- 20.33.164.0/22
- 20.33.168.0/23
- 20.33.171.0/24
- 20.33.173.0/24
- 20.33.174.0/24
- 20.33.177.0/24
- 20.33.178.0/23
- 20.33.180.0/22
- 20.33.184.0/21
- 20.33.192.0/24
- 20.33.194.0/24
- 20.33.196.0/22
- 20.33.200.0/23
- 20.33.202.0/24
- 20.33.205.0/24
- 20.33.206.0/23
- 20.33.208.0/20
- 20.33.224.0/19
- 20.39.58.0/23
- 20.47.0.0/19
- 20.47.32.0/23
- 20.47.34.0/24
- 20.47.37.0/24
- 20.47.39.0/24
- 20.47.40.0/22
- 20.47.44.0/23
- 20.47.48.0/22
- 20.47.53.0/24
- 20.47.54.0/23
- 20.47.56.0/21
- 20.47.64.0/21
- 20.47.76.0/22
- 20.47.80.0/21
- 20.47.88.0/23
- 20.47.92.0/22
- 20.47.96.0/19
- 20.153.0.0/22
- 20.153.4.0/23
- 20.153.8.0/24
- 20.153.11.0/24
- 20.153.12.0/22
- 20.153.17.0/24
- 20.153.18.0/23
- 20.153.21.0/24
- 20.153.22.0/24
- 20.153.24.0/23
- 20.153.27.0/24
- 20.153.28.0/23
- 20.153.31.0/24
- 20.153.32.0/24
- 20.153.34.0/23
- 20.153.36.0/23
- 20.153.39.0/24
- 20.153.40.0/23
- 20.153.47.0/24
- 20.153.48.0/22
- 20.153.55.0/24
- 20.153.57.0/24
- 20.153.58.0/24
- 20.153.60.0/23
- 20.153.63.0/24
- 20.153.64.0/23
- 20.153.83.0/24
- 20.153.84.0/22
- 20.153.88.0/23
- 20.153.90.0/24
- 20.153.95.0/24
- 20.153.97.0/24
- 20.153.98.0/23
- 20.153.100.0/24
- 20.153.103.0/24
and 98 more.
Upstream networks
- AS1299 Arelion Sweden AB
- AS8075 Microsoft Corporation
- AS174 Cogent Communications, LLC
- AS6453 TATA COMMUNICATIONS (AMERICA) INC
- AS2914 NTT America, Inc.
- AS12956 TELEFONICA GLOBAL SOLUTIONS SL
- AS3491 PCCW Global (HK) Ltd.
Adjacent networks
- AS1299 Arelion Sweden AB
- AS8075 Microsoft Corporation
- AS174 Cogent Communications, LLC
- AS6453 TATA COMMUNICATIONS (AMERICA) INC
- AS2914 NTT America, Inc.
- AS12956 TELEFONICA GLOBAL SOLUTIONS SL
- AS3491 PCCW Global (HK) Ltd.
Internet exchanges
- Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan
BGP / ASN / CIDR
awaiting query
enter an AS number, IP address, or organisation name above
IPv4
resolving...
IPv6
resolving...
Search Results
IPv4 Prefixes
—
IPv6 Prefixes
—
Total Prefixes
—
Unique /24s
—
⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED