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 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.

10310 YAHOO-1 - Yahoo Holdings Inc., US

  Adjacency:    42  Upstream:    11  Downstream:    31
  Upstream Adjacent AS list
    AS4608          APNIC-SERVICES - Asia Pacific Network Information Centre, AU
    AS7575          AARNET-AS-AP - Australian Academic and Research Network (AARNet), AU
    AS3491          PCCWG-APAC-HK - PCCW Global (HK) Ltd., HK
    AS7195          AS7195 - EDGEUNO S.A.S, CO
    AS2497          IIJ - Internet Initiative Japan Inc., JP
    AS2516          KDDI - KDDI CORPORATION, JP
    AS1299          TWELVE99 - Arelion Sweden AB, SE
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS4637          ASN-TELSTRA-GLOBAL - Telstra Global, HK
    AS1221          ASN-TELSTRA - Telstra Limited, AU
    AS15830         Equinix - Equinix (EMEA) Acquisition Enterprises B.V., NL
  Downstream Adjacent AS list
    AS14777         YAHOO - Yahoo Holdings Inc., US
    AS14779         YAHOO - Yahoo Holdings Inc., US
    AS14776         YAHOO - Yahoo Holdings Inc., US
    AS14196         YAHOO-CHA - Yahoo Holdings Inc., US
    AS16515         ALTAVISTA - Yahoo Holdings Inc., US
    AS14780         YAHOO - Yahoo Holdings Inc., US
    AS36229         YAHOO-YSM-SC8 - Yahoo Holdings Inc., US
    AS36088         YAHOO-BCST-AC2 - Yahoo Holdings Inc., US
    AS36646         YAHOO-NE1 - Yahoo Holdings Inc., US
    AS26101         YAHOO-BF1 - Yahoo Holdings Inc., US
    AS36752         YAHOO-SP1 - Yahoo Holdings Inc., US
    AS393245        YAHOO-SWB - Yahoo Holdings Inc., US
    AS7233          YAHOO-US - Yahoo, US
    AS5779          YAHOO-DNB - Yahoo Holdings Inc., US
    AS36647         YAHOO-GQ1 - Yahoo Holdings Inc., US
    AS28122         AS28122 - YAHOO DO BRASIL INTERNET LTDA., BR
    AS10230         YAHOO-SG - internet content provider, SG
    AS10229         YAHOO-TW1 - Yahoo Inc., TW
    AS18293         YAHOO-HK2-AP - Internet content provider, HK
    AS38032         YAHOO-HK2-AP - internet content provider, HK
    AS24376         YAHOO-CN2-AP - Yahoo China Datacenter, CN
    AS14778         YAHOO - Yahoo Holdings Inc., US
    AS45501         YAHOO-CORP-SG-AS-AP - Yahoo Corp Network, SG
    AS56173         YAHOO-SG3 - internet content provider, SG
    AS203219        YAHOO-AMA - Yahoo-UK Limited, GB
    AS203220        YAHOO-DEB - Yahoo-UK Limited, GB
    AS203070        YAHOO-FRA - Yahoo-UK Limited, GB
    AS43428         YAHOO-ULS - Yahoo-UK Limited, GB
    AS34010         YAHOO-IRD - Yahoo-UK Limited, GB
    AS10880         YAHOO-AN2 - Yahoo Holdings Inc., US
    AS7280          YAHOO-FC - Yahoo Holdings Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2199  AS10310        ORG+TRN Originate:     109824 /15.26  Transit:     545024 /12.94 YAHOO-1 - Yahoo Holdings Inc., 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       %
 3934 AS10310       YAHOO-1 - Yahoo Holdings Inc., US                 89     17      4     76     13  14.61%


  Prefix               AS Path                              Aggregation Suggestion
  27.123.33.0/24       4608 1221 4637 10310 10310 10310 10310   
  27.123.34.0/23       4777 2516 10310        
  27.123.37.0/24       4777 2516 10310        
  27.123.44.0/22       4608 1221 4637 10310 10310 10310 10310   
  27.123.192.0/23      4608 1221 4637 10310 10310 10310 10310   
  27.123.196.0/23      4608 1221 4637 10310 10310 10310 10310   
  66.196.64.0/21       4608 7575 10310        
  66.196.70.0/23       4608 7575 3356 10310 10310 10310 10310   
  66.196.88.0/22       4608 7575 10310        
  67.195.249.0/24      4608 7575 10310        
  68.142.248.0/24      4608 7575 10310        
  68.142.253.0/24      4608 7575 10310        
  68.180.128.0/20      4608 7575 10310        
  69.147.64.0/18       4608 7575 10310        
  72.30.220.0/22       4608 7575 10310        
  74.6.224.0/22        4608 7575 10310        
  77.238.168.0/22      4608 7575 3356 10310 10310 10310 10310   
  77.238.172.0/23      4608 7575 3356 10310 10310 10310 10310   
  77.238.174.0/24      4608 7575 3356 10310 10310 10310 10310   
  77.238.183.0/24      4608 7575 3356 10310 10310 10310 10310   
  77.238.189.0/24      4608 7575 10310        
  87.248.107.0/24      4608 7575 3356 10310 10310 10310 10310   
  102.165.180.0/24     4608 7575 3491 10310 10310 10310 10310   
  102.165.183.0/24     4608 7575 10310        
  103.40.110.0/23      4608 1221 4637 10310 10310 10310 10310   
  115.178.3.0/24       4608 1221 4637 10310 10310 10310 10310   
  115.178.4.0/23       4608 1221 4637 10310 10310 10310 10310   
  115.178.10.0/23      4608 1221 4637 10310 10310 10310 10310   
  115.178.12.0/22      4608 1221 4637 10310 10310 10310 10310   
  124.108.64.0/21      4608 1221 4637 10310 10310 10310 10310   
  124.108.76.0/23      4777 2516 10310        
  124.108.78.0/23      4608 1221 4637 10310 10310 10310 10310   
  124.108.80.0/22      4608 1221 4637 10310 10310 10310 10310   
  124.108.84.0/23      4608 1221 4637 10310 10310 10310 10310   
  180.222.104.0/21     4777 2516 10310        
  180.222.112.0/21     4777 2516 10310        
  180.233.112.0/21     4608 1221 4637 10310 10310 10310 10310   
  183.177.68.0/24      4608 10310             
  183.177.69.0/24      4777 2516 10310        
  183.177.74.0/23      4608 1221 4637 10310 10310 10310 10310   
  183.177.76.0/22      4777 2516 10310        
  183.177.80.0/23      4777 2516 10310        
  183.177.84.0/22      4608 1221 4637 10310 10310 10310 10310   
  183.177.90.0/23      4608 1221 4637 10310 10310 10310 10310   
  184.165.0.0/19       4608 7575 10310      + Announce - aggregate of 184.165.0.0/20 (4608 7575 10310) and 184.165.16.0/20 (4608 7575 10310)
  184.165.0.0/20       4608 7575 10310      - Withdrawn - aggregated with 184.165.16.0/20 (4608 7575 10310)
  184.165.16.0/20      4608 7575 10310      - Withdrawn - aggregated with 184.165.0.0/20 (4608 7575 10310)
  188.125.88.0/22      4608 7575 3356 10310 10310 10310 10310 + Announce - aggregate of 188.125.88.0/23 (4608 7575 3356 10310 10310 10310 10310) and 188.125.90.0/23 (4608 7575 3356 10310 10310 10310 10310)
  188.125.88.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - aggregated with 188.125.89.0/24 (4608 7575 3356 10310 10310 10310 10310)
  188.125.89.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - aggregated with 188.125.88.0/24 (4608 7575 3356 10310 10310 10310 10310)
  188.125.90.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - aggregated with 188.125.91.0/24 (4608 7575 3356 10310 10310 10310 10310)
  188.125.91.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - aggregated with 188.125.90.0/24 (4608 7575 3356 10310 10310 10310 10310)
  188.125.93.0/24      4608 7575 3356 10310 10310 10310 10310   
  188.125.94.0/23      4608 7575 3356 10310 10310 10310 10310 + Announce - aggregate of 188.125.94.0/24 (4608 7575 3356 10310 10310 10310 10310) and 188.125.95.0/24 (4608 7575 3356 10310 10310 10310 10310)
  188.125.94.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - aggregated with 188.125.95.0/24 (4608 7575 3356 10310 10310 10310 10310)
  188.125.95.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - aggregated with 188.125.94.0/24 (4608 7575 3356 10310 10310 10310 10310)
  193.93.196.0/22      4608 7575 3356 10310 10310 10310 10310   
  193.93.197.0/24      4608 7575 3356 10310 10310 10310 10310 - Withdrawn - matching aggregate 193.93.196.0/22 4608 7575 3356 10310 10310 10310 10310
  198.178.157.0/24     4608 7575 10310        
  200.152.160.0/21     4608 7575 7195 10310 10310 10310 10310   
  200.152.160.0/24     4608 7575 7195 10310 10310 10310 10310 - Withdrawn - matching aggregate 200.152.160.0/21 4608 7575 7195 10310 10310 10310 10310
  200.152.161.0/24     4608 7575 7195 10310 10310 10310 10310 - Withdrawn - matching aggregate 200.152.160.0/21 4608 7575 7195 10310 10310 10310 10310
  200.152.172.0/22     4608 7575 7195 10310 10310 10310 10310   
  200.152.173.0/24     4608 7575 7195 10310 10310 10310 10310 - Withdrawn - matching aggregate 200.152.172.0/22 4608 7575 7195 10310 10310 10310 10310
  202.43.202.0/23      4608 1221 4637 10310 10310 10310 10310   
  202.43.204.0/22      4608 1221 4637 10310 10310 10310 10310   
  202.43.216.0/21      4777 2516 10310        
  202.43.216.0/24      4608 7575 10310        
  202.47.143.0/24      4608 1221 4637 10310 10310 10310 10310   
  202.93.6.0/23        4608 1221 4637 10310 10310 10310 10310   
  202.160.176.0/20     4777 2516 10310        
  202.165.96.0/24      4608 1221 4637 10310 10310 10310 10310   
  202.165.98.0/23      4608 1221 4637 10310 10310 10310 10310   
  202.165.108.0/23     4608 1221 4637 10310 10310 10310 10310   
  202.171.234.0/24     4608 1221 4637 10310 10310 10310 10310   
  203.84.208.0/22      4777 2516 10310      + Announce - aggregate of 203.84.208.0/23 (4777 2516 10310) and 203.84.210.0/23 (4777 2516 10310)
  203.84.208.0/23      4777 2516 10310      - Withdrawn - aggregated with 203.84.210.0/23 (4777 2516 10310)
  203.84.210.0/23      4777 2516 10310      - Withdrawn - aggregated with 203.84.208.0/23 (4777 2516 10310)
  203.84.213.0/24      4777 2516 10310        
  203.84.214.0/23      4608 1221 4637 10310 10310 10310 10310   
  203.104.16.0/21      4608 1221 4637 10310 10310 10310 10310   
  203.110.236.0/22     4608 1221 4637 10310 10310 10310 10310   
  209.131.48.0/20      4608 7575 10310        
  209.131.50.0/23      4608 7575 10310      - Withdrawn - matching aggregate 209.131.48.0/20 4608 7575 10310
  209.131.52.0/23      4608 7575 10310      - Withdrawn - matching aggregate 209.131.48.0/20 4608 7575 10310
  209.191.64.0/20      4608 7575 10310        
  209.191.80.0/21      4608 7575 7195 10310 10310 10310 10310   
  209.191.112.0/20     4608 7575 3356 10310 10310 10310 10310   
  212.82.116.0/24      4608 7575 3356 10310 10310 10310 10310   
  212.82.118.0/23      4608 7575 3356 10310 10310 10310 10310   
  216.115.96.0/20      4608 7575 10310        
  216.115.103.0/24     4608 7575 10310      - Withdrawn - matching aggregate 216.115.96.0/20 4608 7575 10310
  216.252.96.0/19      4608 7575 10310        

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

AS10310   75 More Specifics   89 Total Advertisements   YAHOO-1 - Yahoo Holdings Inc., US
    27.123.33.0/24                27.123.32.0/19
    27.123.34.0/23                27.123.32.0/19
    27.123.37.0/24                27.123.32.0/19
    27.123.44.0/22                27.123.32.0/19
    27.123.192.0/23               27.123.192.0/20
    27.123.196.0/23               27.123.192.0/20
    66.196.64.0/21                66.196.64.0/18
    66.196.70.0/23                66.196.64.0/18
    66.196.88.0/22                66.196.64.0/18
    67.195.249.0/24               67.195.0.0/16
    68.142.248.0/24               68.142.192.0/18
    68.142.253.0/24               68.142.192.0/18
    68.180.128.0/20               68.180.128.0/17
    72.30.220.0/22                72.30.0.0/16
    74.6.224.0/22                 74.6.0.0/16
    77.238.168.0/22               77.238.160.0/19
    77.238.172.0/23               77.238.160.0/19
    77.238.174.0/24               77.238.160.0/19
    77.238.183.0/24               77.238.160.0/19
    77.238.189.0/24               77.238.160.0/19
    87.248.107.0/24               87.248.96.0/19
    102.165.180.0/24              102.165.180.0/22
    102.165.183.0/24              102.165.180.0/22
    115.178.3.0/24                115.178.0.0/20
    115.178.4.0/23                115.178.0.0/20
    115.178.10.0/23               115.178.0.0/20
    115.178.12.0/22               115.178.0.0/20
    124.108.64.0/21               124.108.64.0/19
    124.108.76.0/23               124.108.64.0/19
    124.108.78.0/23               124.108.64.0/19
    124.108.80.0/22               124.108.64.0/19
    124.108.84.0/23               124.108.64.0/19
    180.222.104.0/21              180.222.96.0/20
    183.177.68.0/24               183.177.64.0/19
    183.177.69.0/24               183.177.64.0/19
    183.177.74.0/23               183.177.64.0/19
    183.177.76.0/22               183.177.64.0/19
    183.177.80.0/23               183.177.64.0/19
    183.177.84.0/22               183.177.64.0/19
    183.177.90.0/23               183.177.64.0/19
    184.165.0.0/20                184.165.0.0/16
    184.165.16.0/20               184.165.0.0/16
    188.125.88.0/24               188.125.64.0/19
    188.125.89.0/24               188.125.64.0/19
    188.125.90.0/24               188.125.64.0/19
    188.125.91.0/24               188.125.64.0/19
    188.125.93.0/24               188.125.64.0/19
    188.125.94.0/24               188.125.64.0/19
    188.125.95.0/24               188.125.64.0/19
    193.93.197.0/24               193.93.196.0/22
    200.152.160.0/21              200.152.160.0/20
    200.152.160.0/24              200.152.160.0/20
    200.152.161.0/24              200.152.160.0/20
    200.152.172.0/22              200.152.160.0/20
    200.152.173.0/24              200.152.160.0/20
    202.43.202.0/23               202.43.192.0/19
    202.43.204.0/22               202.43.192.0/19
    202.43.216.0/21               202.43.192.0/19
    202.43.216.0/24               202.43.192.0/19
    202.165.96.0/24               202.165.96.0/20
    202.165.98.0/23               202.165.96.0/20
    202.165.108.0/23              202.165.96.0/20
    203.84.208.0/23               203.84.192.0/19
    203.84.210.0/23               203.84.192.0/19
    203.84.213.0/24               203.84.192.0/19
    203.84.214.0/23               203.84.192.0/19
    209.131.48.0/20               209.131.32.0/19
    209.131.50.0/23               209.131.32.0/19
    209.131.52.0/23               209.131.32.0/19
    209.191.64.0/20               209.191.64.0/18
    209.191.80.0/21               209.191.64.0/18
    209.191.112.0/20              209.191.64.0/18
    212.82.116.0/24               212.82.96.0/19
    212.82.118.0/23               212.82.96.0/19
    216.115.103.0/24              216.115.96.0/20

Whois Entry

whois: 402609

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@yahooinc.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@yahoo-inc.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.
             #