3598 MICROSOFT-CORP-AS, US
Adjacency: 5 Upstream: 5 Downstream: 0
Upstream Adjacent AS list
AS12849 HOTNET-IL HOTmobile, IL
AS1680 NV-ASN CELLCOM ltd., IL
AS2686 ATGS-MMD-AS, US
AS3356 LEVEL3, US
AS8075 MICROSOFT-CORP-MSN-AS-BLOCK, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 608 AS3598 ORIGIN Originate: 611328 /12.78 Transit: 0 /0.00 MICROSOFT-CORP-AS, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 5353 AS3598 MICROSOFT-CORP-AS, US 21 9 0 12 9 42.86% Prefix AS Path Aggregation Suggestion 65.53.0.0/16 57866 3356 3598 131.107.0.0/16 49788 8075 3598 157.54.0.0/16 57866 3356 3598 157.57.0.0/16 57866 3356 3598 157.58.0.0/16 49788 8075 3598 157.58.31.0/24 49788 8075 3598 - Withdrawn - matching aggregate 157.58.0.0/16 49788 8075 3598 157.58.192.0/19 49788 8075 3598 - Withdrawn - matching aggregate 157.58.0.0/16 49788 8075 3598 157.59.0.0/16 57866 3356 3598 157.60.0.0/16 57866 3356 3598 167.220.0.0/16 49788 8075 3598 167.220.0.0/17 49788 8075 3598 - Withdrawn - matching aggregate 167.220.0.0/16 49788 8075 3598 167.220.128.0/18 49788 8075 3598 - Withdrawn - matching aggregate 167.220.0.0/16 49788 8075 3598 167.220.148.0/22 49788 8075 3598 - Withdrawn - matching aggregate 167.220.0.0/16 49788 8075 3598 167.220.152.0/24 49788 8075 3598 - Withdrawn - matching aggregate 167.220.0.0/16 49788 8075 3598 167.220.192.0/19 49788 8075 3598 - Withdrawn - matching aggregate 167.220.0.0/16 49788 8075 3598 167.220.204.0/22 6939 1680 3598 167.220.208.0/23 3303 2686 3598 167.220.224.0/19 49788 8075 3598 - Withdrawn - matching aggregate 167.220.0.0/16 49788 8075 3598 194.69.96.0/19 49788 8075 3598 194.69.100.0/22 49788 8075 3598 - Withdrawn - matching aggregate 194.69.96.0/19 49788 8075 3598 198.105.232.0/22 49788 8075 3598
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS3598 13 More Specifics 22 Total Advertisements MICROSOFT-CORP-AS, US
65.53.0.0/16 65.52.0.0/14
157.54.0.0/16 157.54.0.0/15
157.57.0.0/16 157.56.0.0/14
157.58.0.0/16 157.56.0.0/14
157.58.31.0/24 157.56.0.0/14
157.58.192.0/19 157.56.0.0/14
157.59.0.0/16 157.56.0.0/14
167.220.148.0/22 167.220.128.0/18
167.220.152.0/24 167.220.128.0/18
167.220.204.0/22 167.220.192.0/19
167.220.208.0/23 167.220.192.0/19
194.69.100.0/22 194.69.96.0/19
199.2.137.0/24 199.0.0.0/14
whois: 402603
IANA has recorded AS3598 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS3598\n
#
# 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/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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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: 2025-06-10
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
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
OrgTechHandle: IPHOS5-ARIN
OrgTechName: IPHostmaster, IPHostmaster
OrgTechPhone: +1-425-538-6637
OrgTechEmail: iphostmaster@microsoft.com
OrgTechRef: https://rdap.arin.net/registry/entity/IPHOS5-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
#
# 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 1997-2026, American Registry for Internet Numbers, Ltd.
#