Report for 10310

Name

YAHOO-1 - Yahoo Holdings Inc., 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 AS4637) 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.

10310 YAHOO-1 - Yahoo!

  Adjacency:    18  Upstream:     1  Downstream:    17
  Upstream Adjacent AS list
    AS4637    REACH Reach Network Border AS
  Downstream Adjacent AS list
    AS14776   INKTOMI-LAWSON - Inktomi Corporation
    AS14196   YAHOO-CC1 - Yahoo
    AS14777   INKTOMI-LAWSON - Inktomi Corporation
    AS14778   INKTOMI-LAWSON - Inktomi Corporation
    AS10880   YAHOO-AN2 - Yahoo
    AS14779   INKTOMI-LAWSON - Inktomi Corporation
    AS22565   YAHOO-NUQ - Yahoo
    AS17110   YAHOO-US2 - Yahoo
    AS36088   YAHOO-BCST-AC2 - Yahoo
    AS36646   YAHOO-YSM-OC2 - Yahoo
    AS36229   YAHOO-YSM-SC8 - Yahoo
    AS36752   YAHOO-SP1 - Yahoo
    AS7280    YAHOO-FC - Yahoo
    AS7233    YAHOO-US - Yahoo
    AS5779    Y-BR-SERV - Yahoo! Broadcast Services, Inc.
    AS26101   YAHOO-3 - Yahoo!
    AS14780   INKTOMI-LAWSON - Inktomi Corporation

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
9183  AS10310  ORG+TRN Originate:       4352 /19.91  Transit:     290048 /13.85 YAHOO-1 - Yahoo!

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       %
 8743 AS10310 YAHOO-1 - Yahoo!                              2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  64.156.215.0/24      4637 10310             
  216.115.96.0/20      4637 10310             

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

AS10310   2 More Specifics   3 Total Advertisements   YAHOO-1 - Yahoo!
    64.156.215.0/24               64.152.0.0/13
    66.196.64.0/21                66.196.64.0/18

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 66.196.64.0/21              Announced

Whois Entry

whois: 402603

IANA has recorded AS10310 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS10310\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:       10310
             ASName:         YAHOO-1
             ASHandle:       AS10310
             RegDate:        2001-11-14
             Updated:        2019-05-01
             Ref:            https://rdap.arin.net/registry/autnum/10310
             
             
             OrgName:        Yahoo Holdings Inc.
             OrgId:          OH-207
             Address:        770 BROADWAY FL 9
             City:           New York
             StateProv:      NY
             PostalCode:     10003-9558
             Country:        US
             RegDate:        2018-12-21
             Updated:        2025-09-03
             Ref:            https://rdap.arin.net/registry/entity/OH-207
             
             
             OrgTechHandle: OTC2-ARIN
             OrgTechName:   Oath Tech Contact
             OrgTechPhone:  +1-408-349-5555 
             OrgTechEmail:  rir-tech@oath.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/OTC2-ARIN
             
             OrgNOCHandle: OATHN-ARIN
             OrgNOCName:   Oath NOC
             OrgNOCPhone:  +1-408-349-5555 
             OrgNOCEmail:  rir-noc@yahooinc.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/OATHN-ARIN
             
             OrgAbuseHandle: OATHA-ARIN
             OrgAbuseName:   Oath Abuse
             OrgAbusePhone:  +1-408-349-3300 
             OrgAbuseEmail:  rir-abuse@yahooinc.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/OATHA-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.
             #