Report for 12076

Name

MICROSOFT - Microsoft Corporation, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

12076 MICROSOFT - Microsoft Corporation, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS3477          NOAA-NWAVE - National Oceanic and Atmospheric Administration, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
24241 AS12076        ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  MICROSOFT - Microsoft Corporation, 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       %
20555 AS12076       MICROSOFT - Microsoft Corporation, US              2      2      1      1      1  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  151.207.40.0/21      4608 7575 11537 10886 11956 3477 12076 + Announce - aggregate of 151.207.40.0/22 (4608 7575 11537 10886 11956 3477 12076) and 151.207.44.0/22 (4608 7575 11537 10886 11956 3477 12076)
  151.207.40.0/22      4608 7575 11537 10886 11956 3477 12076 - Withdrawn - aggregated with 151.207.44.0/22 (4608 7575 11537 10886 11956 3477 12076)
  151.207.44.0/22      4608 7575 11537 10886 11956 3477 12076 - Withdrawn - aggregated with 151.207.40.0/22 (4608 7575 11537 10886 11956 3477 12076)

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS12076   2 More Specifics   2 Total Advertisements   MICROSOFT - Microsoft Corporation, US
    151.207.40.0/22               151.207.0.0/16
    151.207.44.0/22               151.207.0.0/16

Whois Entry

whois: 402591

IANA has recorded AS12076 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12076\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/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       12076
             ASName:         MICROSOFT
             ASHandle:       AS12076
             RegDate:        1999-03-16
             Updated:        2015-02-23
             Ref:            https://rdap.arin.net/registry/autnum/12076
             
             
             
             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.
             #