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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	65.53.0.0/16	Microsoft Corporation
	131.107.0.0/16	Microsoft Corporation
	157.54.0.0/16	Microsoft Corporation
	157.57.0.0/16	Microsoft Corporation
	157.58.0.0/16	Microsoft Corporation
	157.58.31.0/24	Microsoft Corporation
	157.58.192.0/19	Microsoft Corporation
	157.59.0.0/16	Microsoft Corporation
	157.60.0.0/16	Microsoft Corporation
	167.220.0.0/17	Microsoft Corporation
	167.220.0.0/16
	167.220.128.0/18	Microsoft Corporation
	167.220.148.0/22	Microsoft Corporation
	167.220.152.0/24	Microsoft Corporation
	167.220.192.0/19	Microsoft Corporation
	167.220.204.0/22	Microsoft Corporation
	167.220.208.0/23	Microsoft Corporation
	167.220.224.0/19	Various Registries (Maintained by ARIN)
	194.69.96.0/19	Microsoft Limited
	194.69.100.0/22	Microsoft Limited
	198.105.232.0/22	Microsoft Corporation
	199.2.137.0/24	Microsoft Corporation
	2001:4898::/32	Microsoft Corporation
	2404:f801::/32
	2a01:110::/32	-
	2a01:110:8020::/48	-
	2a01:110:8068::/48	-

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS8075	Microsoft Corporation	✔	✔
	AS3356	Lumen (Level 3)	✔	✘
	AS2686	AT&T Enterprises, LLC	✔	✔
	AS1680	Cellcom Fixed Line Communication L.P	✔	✔
	AS12849	Hot-Net internet services Ltd.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS8075	Microsoft Corporation	✔	✔
	AS3356	Lumen (Level 3)	✔	✘
	AS1680	Cellcom Fixed Line Communication L.P	✔	✔
	AS2686	AT&T Enterprises, LLC	✔	✔
	AS12849	Hot-Net internet services Ltd.	✔	✘

ASHandle:       AS3598
OrgID:          MSFT
ASName:         MICROSOFT-CORP-AS
ASNumber:       3598
RegDate:        1994-05-18
Updated:        2013-08-20
Source:         ARIN



OrgID:          MSFT
OrgName:        Microsoft Corporation
CanAllocate:    
Street:         One Microsoft Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
Comment:        To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to:
Comment:        * https://cert.microsoft.com.  
Comment:        For SPAM and other abuse issues, such as Microsoft Accounts, please contact:
Comment:        * abuse@microsoft.com.  
Comment:        To report security vulnerabilities in Microsoft products and services, please contact:
Comment:        * secure@microsoft.com.  
Comment:        For legal and law enforcement-related requests, please contact:
Comment:        * msndcc@microsoft.com
Comment:        For routing, peering or DNS issues, please 
Comment:        contact:
Comment:        * IOC@microsoft.com
RegDate:        1998-07-10
Updated:        2024-03-18
OrgAdminHandle: IPHOS5-ARIN
OrgTechHandle:  BEDAR6-ARIN
OrgTechHandle:  IPHOS5-ARIN
OrgTechHandle:  KIMAV-ARIN
OrgTechHandle:  MRPD-ARIN
OrgTechHandle:  SINGH683-ARIN
OrgAbuseHandle: MAC74-ARIN
OrgRoutingHandle:   CHATU3-ARIN
Source:         ARIN





OrgAdminHandle:       IPHOS5-ARIN
OrgAdminName:         IPHostmaster IPHostmaster
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        BEDAR6-ARIN
OrgTechName:          Dawn Bedard
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        IPHOS5-ARIN
OrgTechName:          IPHostmaster IPHostmaster
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        KIMAV-ARIN
OrgTechName:          Avery Kim
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        MRPD-ARIN
OrgTechName:           Microsoft Routing, Peering, and DNS
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        SINGH683-ARIN
OrgTechName:          Prachi Singh
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       MAC74-ARIN
OrgAbuseName:          Microsoft Abuse Contact
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     CHATU3-ARIN
OrgRoutingName:       Somesh Chaturmohta
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-04-18T03:32:21Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
ALTDB	as-microsoft	9
APNIC	as1221:as-customers	4631
RIPE	as-microsofteu	16
APNIC	as58807:as-asiaascust	872
RIPE	as-internet-binat	73
RADB	as-10099	841
RADB	as-telstra-intl-customers-4637	1599
RIPE	as-bix-bg	62498
RIPE	as-nv	4087
RADB	as-microsoft	9
LEVEL3	as-level3-origins-na	0
LEVEL3	as-level3-customers-na	0
RADB	as-th-ix-as45458	198
RADB	as-thix	986
RIPE	as-hotnet-il	110
RADB	as-learn-8075	12
RADB	as58807:as-asiaascust	872
RADB	as7606:as-sa-ix	29073
RIPE	as-ignemea	145