AS8075 — MICROSOFT-CORP-MSN-AS-BLOCK

Network type: hosting

AS8075 announces 1,166 IPv4 prefixes covering 80,750,848 addresses and 184 IPv6 prefixes.

About this network

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.

Announced prefixes

• 1.186.0.0/17
• 1.186.128.0/18
• 1.186.192.0/19
• 1.186.224.0/20
• 1.186.240.0/21
• 1.186.248.0/22
• 1.186.252.0/23
• 1.186.255.0/24
• 2.58.103.0/24
• 4.144.0.0/12
• 4.160.0.0/11
• 4.192.0.0/12
• 4.208.0.0/14
• 4.212.0.0/16
• 4.213.0.0/17
• 4.213.128.0/18
• 4.213.192.0/19
• 4.213.224.0/20
• 4.213.240.0/22
• 4.213.244.0/23
• 4.213.246.0/24
• 4.213.248.0/21
• 4.214.0.0/15
• 4.216.0.0/13
• 4.224.0.0/11
• 5.23.34.0/24
• 5.144.153.0/24
• 9.129.0.0/16
• 9.130.0.0/15
• 9.132.0.0/15
• 9.135.0.0/16
• 9.136.0.0/16
• 9.140.0.0/15
• 9.143.0.0/16
• 9.145.0.0/16
• 9.146.0.0/16
• 9.149.0.0/16
• 9.157.0.0/16
• 9.158.0.0/15
• 9.160.0.0/16
• 9.163.0.0/16
• 9.164.0.0/16
• 9.166.0.0/15
• 9.169.0.0/16
• 9.173.0.0/16
• 9.177.0.0/16
• 9.185.0.0/16
• 9.190.0.0/16
• 9.192.0.0/15
• 9.198.0.0/16
• 9.205.0.0/16
• 9.220.0.0/16
• 9.223.0.0/16
• 9.228.0.0/15
• 9.231.0.0/16
• 9.234.0.0/15
• 9.248.0.0/16
• 13.64.0.0/11
• 13.104.0.0/18
• 13.104.64.0/20
• 13.104.80.0/23
• 13.104.83.0/24
• 13.104.84.0/22
• 13.104.88.0/21
• 13.104.96.0/19
• 13.104.128.0/17
• 13.105.0.0/16
• 13.106.0.0/16
• 13.107.0.0/23
• 13.107.2.0/24
• 13.107.8.0/24
• 13.107.10.0/23
• 13.107.14.0/24
• 13.107.17.0/24
• 13.107.20.0/24
• 13.107.23.0/24
• 13.107.24.0/21
• 13.107.32.0/22
• 13.107.36.0/23
• 13.107.38.0/24
• 13.107.41.0/24
• 13.107.44.0/22
• 13.107.53.0/24
• 13.107.55.0/24
• 13.107.57.0/24
• 13.107.58.0/23
• 13.107.60.0/22
• 13.107.64.0/18
• 13.107.130.0/23
• 13.107.132.0/22
• 13.107.136.0/22
• 13.107.141.0/24
• 13.107.142.0/23
• 13.107.144.0/20
• 13.107.160.0/19
• 13.107.192.0/19
• 13.107.224.0/20
• 13.107.240.0/21
• 13.107.248.0/22
• 13.107.252.0/23

and 1,250 more.

Upstream networks

• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS1403 EBOX
• AS174 Cogent Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC
• AS22652 Videotron Ltee
• AS1299 Arelion Sweden AB
• AS55720 Gigabit Hosting Sdn Bhd
• AS37721 Virtual Technologies & Solutions
• AS9002 RETN Limited
• AS48185 team.blue NV
• AS50304 Blix Solutions AS
• AS29504 Freenet Liberec, z.s.
• AS42708 Glesys AB
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS38001 NewMedia Express Pte Ltd
• AS50673 Serverius Holding B.V.
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS6696 VERIXI SA
• AS64073 Vetta Group
• AS34019 Hivane Association
• AS1257 Tele2 Sverige AB
• AS8280 SYNAPSECOM S.A. Provider of Telecommunications and Internet Services

Downstream networks

• AS8069 Microsoft Corporation
• AS8068 Microsoft Corporation
• AS8070 Microsoft Corporation
• AS58593 Shanghai Blue Cloud Technology Co.,Ltd
• AS3598 Microsoft Corporation
• AS62540 Drake Holdings LLC
• AS5761 Microsoft Corporation

Adjacent networks

• AS8069 Microsoft Corporation
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS8068 Microsoft Corporation
• AS1299 Arelion Sweden AB
• AS4755 TATA Communications formerly VSNL is Leading ISP
• AS3356 Level 3 Parent, LLC
• AS1403 EBOX
• AS174 Cogent Communications, LLC
• AS22652 Videotron Ltee
• AS7018 AT&T Enterprises, LLC
• AS55720 Gigabit Hosting Sdn Bhd
• AS8070 Microsoft Corporation
• AS58593 Shanghai Blue Cloud Technology Co.,Ltd
• AS24482 SG.GS
• AS9002 RETN Limited
• AS37721 Virtual Technologies & Solutions
• AS42708 Glesys AB
• AS6696 VERIXI SA
• AS50673 Serverius Holding B.V.
• AS48185 team.blue NV
• AS14907 Wikimedia Foundation Inc.
• AS38001 NewMedia Express Pte Ltd
• AS50304 Blix Solutions AS
• AS1836 green.ch AG

Routing security

• RPKI: 1,317 valid, 2 invalid and 22 not-found announcements; 1,603 ROAs.
• ASPA: none published.
• IRR: 99% of announcements registered; 2,333 route objects.
• Listed in as-sets: AS-10099, AS-137491, AS-17117IMPORT, AS-2TALK-PEERS, AS-31027-EXCLUDE-AMS-IX-RS, AS-37148-GLOBACOM, AS-3PSYSTEM-AMSIX-EXCEPTIONS, AS-40300-IX-CUSTOMERS, AS-43413_NT-NIX, AS-4648-PAIX-PEER, AS-4D-DC-LONAP, AS-8167-PEERING-INTERNATIONAL, AS-8764-EXCLUDE-AMS-IX-RS, AS-ACT-GLOBAL, AS-AIRPARK-NAP-CT1-PEERS, AS-AIRPARK-NAP-JB1-PEERS, AS-AKN:AS-TORIX-PEERS, AS-AMS-IX-HK-RS, AS-AMS-IX-HK-RS, AS-AMS-IX-HK-RS-SETS, AS-AMS-IX-HK-RS-SETS, AS-AMS-IX-HK-RS-SETS-V6, AS-AMS-IX-HK-RS-SETS-V6, AS-AMS-IX-HK-RS-V6, AS-AMS-IX-HK-RS-V6.

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• DE-CIX Frankfurt — Frankfurt, Germany
• IX.br (PTT.br) Fortaleza — Fortaleza, Brazil
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Jakarta Internet Exchange — Jakarta, Indonesia
• Neutral Internet Exchange — Amsterdam, Netherlands
• NAPAfrica IX Johannesburg — Johannesburg, South Africa
• France-IX Paris — Paris, France
• Equinix Internet Exchange Singapore — Singapore, Singapore
• TPIX - Internet Exchange — Warsaw, Poland
• Milan Internet Exchange — Milan, Italy
• Equinix Internet Exchange Ashburn — Ashburn, United States
• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• Seattle Internet Exchange — Seattle, United States
• Coresite - Any2 West — Los Angeles, United States
• Any2 California — Los Angeles, United States
• London Network Access Point — London, United Kingdom
• NAPAfrica IX Cape Town — Cape Town, South Africa
• Hong Kong Internet Exchange — Hong Kong, China
• JPIX Tokyo — Tokyo, Japan
• Equinix Internet Exchange Warsaw — Warsaw, Poland
• Toronto Internet Exchange — Toronto, Canada
• DE-CIX New York — New York, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• DE-CIX Mumbai — Mumbai, India
• Singapore Internet Exchange — Singapore, Singapore
• Megaport IX Sydney — Sydney, Australia
• NetIX — Sofia, Bulgaria
• SwissIX — Zurich, Switzerland
• Extreme IX Mumbai — Mumbai, India
• Equinix Internet Exchange Sydney — Sydney, Australia
• Equinix Internet Exchange Paris — Paris, France
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• Equinix Internet Exchange Dallas — Dallas, United States
• DE-CIX Dusseldorf — Düsseldorf, Germany
• DE-CIX Madrid — Madrid, Spain
• Roma Internet Exchange Point — Rome, Italy
• Johannesburg Internet Exchange — Johannesburg, South Africa
• New York International Internet Exchange — New York, United States
• DE-CIX Munich — Munich, Germany
• Peering.cz — Prague, Czech Republic
• NIX.CZ - Neutral Internet eXchange for the Czech Republic — Prague, Czech Republic
• ERA-IX Amsterdam — Amsterdam, Netherlands
• IX Australia (Sydney NSW) — Sydney, Australia
• DE-CIX Hamburg — Hamburg, Germany
• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States
• Taipei Internet Exchange (TPIX) — Taipei, Taiwan
• Thinx IX — Warsaw, Poland
• Vienna Internet Exchange — Vienna, Austria
• Malaysia Internet Exchange — Kuala Lumpur, Malaysia
• FL-IX - The Florida Internet Exchange / Community IX - Florida — Miami, United States
• National Internet Exchange of India - Mumbai — Mumbai, India
• Equinix Internet Exchange Miami — Miami, United States
• ESpanix Madrid Lower LAN — Madrid, Spain
• DE-CIX Dallas — Dallas, United States
• Digital Realty Atlanta Internet Exchange — Atlanta, United States
• Extreme IX New Delhi — New Delhi, India
• PIT Chile - Santiago — Santiago, Chile
• Edge Internet Exchange - Sydney — Sydney, Australia
• BroadBand Internet eXchange Singapore — Singapore, Singapore
• Kenya Internet Exchange Point - Nairobi — Nairobi, Kenya
• Midwest Internet Cooperative Exchange — Minneapolis, United States
• Berlin Commercial Internet Exchange — Berlin, Germany
• Megaport IX Melbourne — Melbourne, Australia
• InterLAN-IX — Bucharest, Romania
• Bulgarian Internet eXchange — Sofia, Bulgaria
• LINX Manchester — Manchester, United Kingdom
• Internet Exchange Point of Nigeria - Lagos — Lagos, Nigeria
• DE-CIX ASEAN (Singapore, Malaysia, Brunei) — Singapore, Singapore
• BroadBand Internet eXchange Osaka — Osaka, Japan
• Student & Technology United Internet Exchanges — Taipei, Taiwan
• EdgeNXT Internet Exchange — Jakarta, Indonesia
• Equinix Internet Exchange Tokyo — Tokyo, Japan
• Cape Town Internet Exchange — Cape Town, South Africa
• France-IX Marseille — Marseille, France
• Torino Piemonte Exchange Point — Torino, Italy
• Budapest Internet Exchange — Budapest, Hungary
• Equinix Internet Exchange New York — New York, United States
• National Internet Exchange of India - New Delhi — New Delhi, India
• Internet Neutral Exchange Association CLG - LAN1 — Dublin, Ireland
• Megaport Frankfurt IX — Frankfurt, Germany
• JPIX Osaka — Osaka, Japan
• UAE-IX — Dubai, United Arab Emirates
• Megaport IX Brisbane — Brisbane, Australia
• New Zealand Internet Exchange Auckland — Auckland, New Zealand
• IX Australia (Melbourne VIC) — Melbourne, Australia
• Northwest Access Exchange — Portland, United States
• MegaPort-IX Auckland — Auckland, New Zealand
• Detroit Internet Exchange — Detroit, United States
• BroadBand Internet eXchange Hong Kong — Hong Kong, China
• Megaport Dusseldorf IX — Düsseldorf, Germany
• Interconnection eXchange Denver — Denver, United States
• STHIX - Stockholm — Stockholm, Sweden
• Stockholm Internet Exchange — Stockholm, Sweden
• CANIX Internet Exchange - Montreal — Montreal, Canada
• Extreme IX Chennai — Chennai, India
• Boston Internet Exchange — Boston, United States
• AMS-IX Mumbai — Mumbai, India
• Digital Edge EPIX Jakarta — Jakarta, Indonesia
• Auckland Peering Exchange — Auckland, New Zealand
• Belgian National Internet Exchange — Brussels, Belgium
• DE-CIX Chicago — Chicago, United States
• IX Australia (Perth WA) — Perth, Australia
• Edge Internet Exchange - Perth — Perth, Australia
• Equinix Internet Exchange Los Angeles — Los Angeles, United States
• IX Australia (Brisbane QLD) — Brisbane, Australia
• Equinix Internet Exchange Palo Alto — Palo Alto, United States
• Greek Internet Exchange - Athens — Athens, Greece
• Digital Realty New York Internet Exchange — New York, United States
• Edge Internet Exchange - Melbourne — Melbourne, Australia
• Vancouver Internet Exchange — Vancouver, Canada
• Massachusetts Internet Exchange — Boston, United States
• Equinix Los Angeles IBX — Los Angeles, United States
• Internet Neutral Exchange Association CLG - LAN2 — Dublin, Ireland
• DE-CIX Delhi — New Delhi, India
• DE-CIX Istanbul — Istanbul, Turkey
• PIT Colombia - Bogota — Bogota, Colombia
• United IX Chicago — Chicago, United States
• Norwegian Internet Exchange Oslo 1 — Oslo, Norway
• Megaport IX Perth — Perth, Australia
• Equinix IBX Secaucus — Secaucus, United States
• Korea Internet Neutral Exchange KINX — Seoul, South Korea
• DE-CIX Lisbon — Lisbon, Portugal
• Gigabit Portuguese Internet Exchange Point — Lisbon, Portugal
• Edge Internet Exchange - Auckland — Auckland, New Zealand
• Equinix Internet Exchange Melbourne — Melbourne, Australia
• National Internet Exchange of India - Chennai — Chennai, India
• Catalunya Neutral Internet Exchange Point — Barcelona, Spain
• AMS-IX Lagos — Lagos, Nigeria
• DE-CIX Chennai — Chennai, India
• Edge Internet Exchange - Brisbane — Brisbane, Australia
• CERN IXP / Equinix Internet Exchange Geneva — Geneva, Switzerland
• CitranetIX Yogyakarta — Yogyakarta, Indonesia
• IX.br (PTT.br) Campinas — Campinas, Brazil
• DE-CIX Barcelona — Barcelona, Spain
• Megaport IX Ashburn — Ashburn, United States
• PIT MX — Querétaro, Mexico
• LINX NoVa — Reston, United States
• Croatian Internet Exchange — Zagreb, Croatia
• MegaPort IX Singapore — Singapore, Singapore
• DE-CIX Kuala Lumpur — Kuala Lumpur, Malaysia
• Equinix Internet Exchange Seattle — Seattle, United States
• Equinix Internet Exchange Zurich — Zurich, Switzerland
• Megaport Berlin IX — Berlin, Germany
• DE-CIX Phoenix — Phoenix, United States
• Salt Lake Internet Exchange — Salt Lake City, United States
• Megaport Munich IX — Munich, Germany
• Megaport Dallas — Dallas, United States
• Equinix Internet Exchange Perth — Perth, Australia
• Danish Internet Exchange — Copenhagen, Denmark
• Megaport IX Los Angeles — Los Angeles, United States
• Qatar Internet Exchange Point — Doha, Qatar
• Asteroid Amsterdam IX — Amsterdam, Netherlands
• Manama-IX — Manama, Bahrain
• Equinix Internet Exchange Osaka — Osaka, Japan
• Singapore Open Exchange — Singapore, Singapore
• Megaport MegaIX Sofia — Sofia, Bulgaria
• Neutral Internet Exchange 2 — Amsterdam, Netherlands
• Netnod Sundsvall- Gävle — Sundsvall, Sweden
• Megaport IX Seattle — Seattle, United States
• Megaport Toronto — Toronto, Canada
• Extreme IX Hyderabad — Hyderabad, India
• Equinix Internet Exchange Seoul — Seoul, South Korea
• AMS-IX Hyderabad — Hyderabad, India
• CANIX Internet Exchange - Quebec — Quebec, Canada
• Megaport Las Vegas — Las Vegas, United States
• Equinix-LA(former Paix) — Los Angeles, United States
• Ponto de Intercambio Internet Angola — Luanda, Angola