206208 looking glass

AS3598 Microsoft Corporation 🇺🇸 US

Announcing 23 prefixes, seen at the RIS collectors.

IPv4 prefixes
18
609,792 (2,382 × /24)
IPv6 prefixes
5
3 × /32
Upstreams
4
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS3598
Name
Microsoft Corporation
Organisation
Microsoft Corporation
Country
🇺🇸 US
RIR
ARIN
Allocated
1994-05-18

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

21 valid (91.3%) 0 invalid (0.0%) 2 no ROA (8.7%)

Whois

Fetched from whois.arin.net

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

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

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: 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

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