AS Number
AS12076
AS Name
MICROSOFT
Org Name
Microsoft Corporation
Country / Region
United States
Registry

arin

RegDate

1998-07-10

Updated

2025-06-10

AS12076 Looking Glass
IPv4Prefixes

3

IPv6Prefixes

6

IPv4 NUMs

2,304

IPv6 NUMs(/64)

393,216

CIDR Description IP Num
151.207.40.0/22
IRR Valid
United States Patent and Trademark Office 1024
151.207.44.0/22
IRR Valid
United States Patent and Trademark Office 1024
160.131.121.0/24
IRR InValid
Florida Department of Children and Families 256
CIDR Description IP NUMs(prefix /64)
2608:1c1::/48
United States Department of Defense (DoD) 65536
2608:1c1:1::/48
United States Department of Defense (DoD) 65536
2608:1c1:4::/48
United States Department of Defense (DoD) 65536
2608:1c1:6::/48
United States Department of Defense (DoD) 65536
2608:1c1:7::/48
United States Department of Defense (DoD) 65536
2608:1c1:8::/48
United States Department of Defense (DoD) 65536
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS5852 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD), US United States 497,664 262,144 IPv6 IPv6
AS3477 NOAA-NWAVE - National Oceanic and Atmospheric Administration, US United States 324,608 38,764,019,712 IPv4 IPv4
AS13979 ATT-IPFR - AT&T Enterprises, LLC, US United States 49,664 0 IPv4 IPv4
ASNumber:       12076
ASName:         MICROSOFT
ASHandle:       AS12076
RegDate:        1999-03-16
Updated:        2015-02-23
Ref:            https://rdap.arin.net/registry/autnum/12076

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:        * [email protected].
Comment:        To report security vulnerabilities in Microsoft products and services, please contact:
Comment:        * [email protected].
Comment:        For legal and law enforcement-related requests, please contact:
Comment:        * [email protected]
Comment:        For routing, peering or DNS issues, please
Comment:        contact:
Comment:        * [email protected]
RegDate:        1998-07-10
Updated:        2025-06-10
OrgTechHandle   BEDAR6-ARIN
OrgTechHandle   IPHOS5-ARIN
OrgTechHandle   MRPD-ARIN
OrgTechHandle   SINGH683-ARIN
OrgAbuseHandle  MAC74-ARIN
OrgRoutingHandle CHATU3-ARIN
OrgAdminHandle  IPHOS5-ARIN
Source:         ARIN

OrgAdminHandleHandle:  IPHOS5-ARIN
OrgAdminHandleName:    IPHostmaster, IPHostmaster
OrgAdminHandlePhone:   +1-425-538-6637
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/IPHOS5-ARIN

OrgTechHandleHandle:  BEDAR6-ARIN
OrgTechHandleName:    Bedard, Dawn
OrgTechHandlePhone:   +1-425-538-6637
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/BEDAR6-ARIN

OrgTechHandleHandle:  IPHOS5-ARIN
OrgTechHandleName:    IPHostmaster, IPHostmaster
OrgTechHandlePhone:   +1-425-538-6637
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/IPHOS5-ARIN

OrgTechHandleHandle:  MRPD-ARIN
OrgTechHandleName:    Microsoft Routing, Peering, and DNS, 
OrgTechHandlePhone:   +1-425-882-8080
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/MRPD-ARIN

OrgTechHandleHandle:  SINGH683-ARIN
OrgTechHandleName:    Singh, Prachi
OrgTechHandlePhone:   +1-425-707-5601
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/SINGH683-ARIN

OrgAbuseHandleHandle:  MAC74-ARIN
OrgAbuseHandleName:    Microsoft Abuse Contact, 
OrgAbuseHandlePhone:   +1-425-882-8080
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/MAC74-ARIN

OrgRoutingHandleHandle:  CHATU3-ARIN
OrgRoutingHandleName:    Chaturmohta, Somesh
OrgRoutingHandlePhone:   +1-425-882-8080
OrgRoutingHandleEmail:   [email protected]
OrgRoutingHandleRef:     https://rdap.arin.net/registry/entity/CHATU3-ARIN