AS3598 Microsoft Corporation

MICROSOFT-CORP-AS

IPv4 Addresses: 533,760

Number of Peers: 8

Number of Prefixes: 27

ASN Allocated: Assigned

ASN
Prefixes
Peers
Upstreams
Graphs
World Map
Raw Whois

AS3598 Summary

Regional Registry:

IANA

Allocation Status:

Assigned

AS3598 Network

IPv4 Prefixes:

22

IPv4 Peers:

5

IPv4 Upstreams:

5

IPv6 Prefixes:

5

IPv6 Peers:

3

IPv6 Upstreams:

3

Contacts

Email Contacts:

abuse@microsoft.com

secure@microsoft.com

msndcc@microsoft.com

ioc@microsoft.com

dabedard@microsoft.com

iphostmaster@microsoft.com

someshch@microsoft.com

pracsin@microsoft.com

averykim@microsoft.com

Abuse Contacts:

abuse@microsoft.com

Address:

One Microsoft Way,

Redmond,

WA,

98052,

US

IPv4 Prefixes
IPv6 Prefixes

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	65.53.0.0/16	Microsoft Corporation		66.220.44.0/23	ARIN
	131.107.0.0/16	Microsoft Corporation		131.107.0.0/16	ARIN
	157.54.0.0/16	Microsoft Corporation		157.54.0.0/15	ARIN
	157.57.0.0/16	Microsoft Corporation		157.56.0.0/14	ARIN
	157.58.0.0/16	Microsoft Corporation		157.56.0.0/14	ARIN
	157.58.31.0/24	Microsoft Corporation		157.56.0.0/14	ARIN
	157.58.192.0/19	Microsoft Corporation		156.112.0.0/15	ARIN
	157.59.0.0/16	Microsoft Corporation		157.56.0.0/14	ARIN
	157.60.0.0/16	Microsoft Corporation		157.60.0.0/16	ARIN
	167.220.0.0/17	Microsoft Corporation		167.220.0.0/17	ARIN
	167.220.0.0/16	Various Registries (Maintained by ARIN)		167.220.0.0/17	ARIN
	167.220.128.0/18	Microsoft Corporation		167.220.128.0/18	ARIN
	167.220.148.0/22	Microsoft Corporation		170.84.68.0/22	Lacnic
	167.220.152.0/24	Microsoft Corporation		167.220.128.0/18	ARIN
	167.220.192.0/19	Microsoft Corporation		167.220.192.0/19	ARIN
	167.220.204.0/22	Microsoft Corporation		167.220.192.0/19	ARIN
	167.220.208.0/23	Microsoft Corporation		167.220.192.0/19	ARIN
	167.220.224.0/19	Early registration addresses		167.220.224.0/20	APNIC
	194.69.96.0/19	Microsoft Corporation AS8075		194.69.96.0/19	RIPE
	194.69.100.0/22	Microsoft Corporation AS8075		194.69.96.0/19	RIPE
	198.105.232.0/22	Microsoft Corporation		198.105.232.0/22	ARIN
	199.2.137.0/24	Microsoft Corporation		199.0.0.0/14	ARIN

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	2001:4898::/32	Microsoft Corporation		2001:4898::/31	ARIN
	2404:f801::/32	Microsoft Singapore Pte. Ltd.		2404:f800::/32	APNIC
	2a01:110::/32			2a01:110::/31	RIPE
	2a01:110:8020::/48	UK MICROSOFT MSIT		2a01:110::/31	RIPE
	2a01:110:8068::/48	UK MICROSOFT MSIT		2a01:110::/31	RIPE

IPv4 Peers
IPv6 Peers

Country	ASN	Name	Description	IPv6
	AS3356	LEVEL3	Level 3 Parent, LLC
	AS8075	MICROSOFT-CORP-MSN-AS-BLOCK	Microsoft Corporation
	AS2686	ATGS-MMD-AS	AT&T Enterprises, LLC
	AS12849	HOTNET-IL	HOTmobile
	AS1680	NV-ASN	CELLCOM ltd.

Country	ASN	Name	Description	IPv4
	AS8075	MICROSOFT-CORP-MSN-AS-BLOCK	Microsoft Corporation
	AS2686	ATGS-MMD-AS	AT&T Enterprises, LLC
	AS1680	NV-ASN	CELLCOM ltd.

IPv4 Upstreams
IPv6 Upstreams

Country	ASN	Name	Description	IPv6
	AS8075	MICROSOFT-CORP-MSN-AS-BLOCK	Microsoft Corporation
	AS3356	LEVEL3	Level 3 Parent, LLC
	AS1680	NV-ASN	CELLCOM ltd.
	AS2686	ATGS-MMD-AS	AT&T Enterprises, LLC
	AS12849	HOTNET-IL	HOTmobile

IPv4 Upstream Graph

Country	ASN	Name	Description	IPv4
	AS8075	MICROSOFT-CORP-MSN-AS-BLOCK	Microsoft Corporation
	AS1680	NV-ASN	CELLCOM ltd.
	AS2686	ATGS-MMD-AS	AT&T Enterprises, LLC

IPv6 Upstream Graph

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber:       3598
ASName:         MICROSOFT-CORP-AS
ASHandle:       AS3598
RegDate:        1994-05-18
Updated:        2013-08-20    
Ref:            https://rdap.arin.net/registry/autnum/3598



OrgName:        Microsoft Corporation
OrgId:          MSFT
Address:        One Microsoft Way
City:           Redmond
StateProv:      WA
PostalCode:     98052
Country:        US
RegDate:        1998-07-10
Updated:        2024-03-18
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:        
Comment:        For SPAM and other abuse issues, such as Microsoft Accounts, please contact:
Comment:        * abuse@microsoft.com.  
Comment:        
Comment:        To report security vulnerabilities in Microsoft products and services, please contact:
Comment:        * secure@microsoft.com.  
Comment:        
Comment:        For legal and law enforcement-related requests, please contact:
Comment:        * msndcc@microsoft.com
Comment:        
Comment:        For routing, peering or DNS issues, please 
Comment:        contact:
Comment:        * IOC@microsoft.com
Ref:            https://rdap.arin.net/registry/entity/MSFT


OrgTechHandle: BEDAR6-ARIN
OrgTechName:   Bedard, Dawn 
OrgTechPhone:  +1-425-538-6637 
OrgTechEmail:  dabedard@microsoft.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BEDAR6-ARIN

OrgTechHandle: IPHOS5-ARIN
OrgTechName:   IPHostmaster, IPHostmaster 
OrgTechPhone:  +1-425-538-6637 
OrgTechEmail:  iphostmaster@microsoft.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPHOS5-ARIN

OrgRoutingHandle: CHATU3-ARIN
OrgRoutingName:   Chaturmohta, Somesh 
OrgRoutingPhone:  +1-425-882-8080 
OrgRoutingEmail:  someshch@microsoft.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/CHATU3-ARIN

OrgTechHandle: SINGH683-ARIN
OrgTechName:   Singh, Prachi 
OrgTechPhone:  +1-425-707-5601 
OrgTechEmail:  pracsin@microsoft.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SINGH683-ARIN

OrgAbuseHandle: MAC74-ARIN
OrgAbuseName:   Microsoft Abuse Contact
OrgAbusePhone:  +1-425-882-8080 
OrgAbuseEmail:  abuse@microsoft.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MAC74-ARIN

OrgTechHandle: MRPD-ARIN
OrgTechName:   Microsoft Routing, Peering, and DNS
OrgTechPhone:  +1-425-882-8080 
OrgTechEmail:  IOC@microsoft.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MRPD-ARIN

OrgTechHandle: KIMAV-ARIN
OrgTechName:   Kim, Avery  
OrgTechPhone:  +1-425-882-8080 
OrgTechEmail:  averykim@microsoft.com
OrgTechRef:    https://rdap.arin.net/registry/entity/KIMAV-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#

Country	IX	Name	IPv4	IPv6	Port Speed