ASN Lookup Tool

Yahoo Holdings Inc. yahooinc.com US US 111 Routes

AS Data

AS10310

AS10310 – Yahoo Holdings Inc.

AS Number 10310
AS Name YAHOO-1
Organization Yahoo Holdings Inc. (oh-207)
Country US
Website yahooinc.com
Number of IPv4 Routes 89
Number of IPv6 Routes 22
ASN type BUSINESS
Registry ARIN
Date Allocated 2001-11-14

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IP Ranges

Route # IPs
66.196.64.0/21 2048
183.177.68.0/24 256
209.191.80.0/21 2048
115.178.3.0/24 256
2406:6e00::/32 ~79×10²⁷
212.82.116.0/24 256
2a03:cd00::/32 ~79×10²⁷
193.93.197.0/24 256
66.196.88.0/22 1024
2001:4998:f00e::/48 ~1×10²⁴
202.165.96.0/24 256
2001:4998:f000::/36 ~5×10²⁷
2a00:1288:f03c::/48 ~1×10²⁴
203.84.208.0/23 512
77.238.172.0/23 512
209.131.48.0/20 4096
2a00:1288:f035::/48 ~1×10²⁴
216.252.96.0/19 8192
216.115.96.0/20 4096
203.84.210.0/23 512
200.152.160.0/24 256
200.152.172.0/22 1024
188.125.93.0/24 256
87.248.107.0/24 256
27.123.33.0/24 256
124.108.64.0/21 2048
102.165.180.0/24 256
2a00:1288:f036::/48 ~1×10²⁴
124.108.84.0/23 512
69.147.64.0/18 16384
2a00:1288:f03d::/48 ~1×10²⁴
188.125.90.0/24 256
68.180.128.0/20 4096
180.233.112.0/21 2048
2406:2000::/32 ~79×10²⁷
2a00:1288:f037::/48 ~1×10²⁴
115.178.4.0/23 512
193.93.196.0/22 1024
124.108.76.0/23 512
2001:43f8:1140::/48 ~1×10²⁴
27.123.37.0/24 256
188.125.91.0/24 256
183.177.90.0/23 512
188.125.95.0/24 256
180.222.112.0/21 2048
200.152.161.0/24 256
77.238.168.0/22 1024
68.142.248.0/24 256
188.125.89.0/24 256
77.238.174.0/24 256
188.125.94.0/24 256
203.84.213.0/24 256
124.108.80.0/22 1024
203.104.16.0/21 2048
216.115.103.0/24 256
200.152.173.0/24 256
2406:2000:f01e::/48 ~1×10²⁴
2a00:1288:f03e::/48 ~1×10²⁴
77.238.183.0/24 256
67.195.249.0/24 256

Raw Whois Response

#
# 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:  network-abuse@cc.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.
#

Parsed Whois Response

Peers

AS Number Description Country
AS21738 Rozint US
AS209179 AfriCloud LLC US
AS28792 Public Internet Ltd GB
AS58057 Securebit AG CH
AS40994 Hohl IT e.U. AT
AS262589 SAMM TECNOLOGIA E TELECOMUNICACOES S.A BR
AS401703 Ordinal Advisors LLC US
AS2500 WIDE Project JP
AS38880 Micron21 Datacentre Pty Ltd AU
AS214420 Conor Lewis GB
AS198150 SIACOM JSC GE
AS269416 SEMEAR TELECOM EIRELI BR
AS14773 Lancaster Lebanon Intermediate Unit 13 US
AS3303 Swisscom Schweiz AG CH
AS6079 RCN US
AS22548 Núcleo de Inf. e Coord. do Ponto BR NIC.BR BR
AS1000 LINK AMERICAN US
AS23367 Adaptive Data Networks, LLC US
AS33185 Hive Data Center Inc. CA
AS50673 Serverius Holding B.V. NL
AS60503 FNX Tecnologia LTDA BR
AS53062 GGNET TELECOMUNICACOES LTDA BR
AS206735 Novelcomm LP GR
AS3216 PJSC "Vimpelcom" RU
AS13237 euNetworks GmbH DE
AS32590 Valve Corporation US
AS12735 TurkNet Iletisim Hizmetleri A.S. TR
AS11164 Internet2 US
AS701 Verizon Business/UUnet US
AS399337 Netcrawler Inc CA
AS559 SWITCH CH
AS328137 Web Squad Connect Pty Ltd ZA
AS8758 Iway AG CH
AS401332 Triplebit US
AS6696 VERIXI SA BE
AS262427 Invista Net Provedor de Acesso Ltda BR
AS1828 Unitas Global US
AS999 CORIX NETWORKS US
AS211358 Patrizio Palumbo IT
AS37497 Network Platforms (PTY) LTD ZA
AS264479 Turbozone Internet BR
AS38158 PT. Cyberindo Aditama ID
AS263541 IMF NETWORK DATA LTDA - ME BR
AS209090 Association Stolon FR
AS12741 Netia SA PL
AS6667 Elisa Oyj FI
AS16515 Yahoo Holdings Inc. US
AS10111 Zeofast Network CN
AS203220 Yahoo-UK Limited GB
AS215760 Adam Grazioli IT
AS11432 Telium Telecomunicações Ltda BR
AS44620 Netlen Internet Hizmetleri Ltd. Sti. TR
AS209823 Enki Multimedia EURL FR
AS14630 Invesco Group Services, Inc. US
AS10229 Yahoo Inc. TW
AS4508 NeuStyle CA
AS1221 Telstra Limited AU
AS28398 INTERNET TELEFONIA Y TV DE MICHOACAN SA DE CV MX
AS8657 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. PT
AS8218 Zayo Infrastructure France SA FR

Upstreams

AS Number Description Country
AS39737 Prime Telecom srl RO
AS6762 TELECOM ITALIA SPARKLE S.p.A. IT
AS39249 Netassist International EOOD BG
AS15943 wilhelm.tel GmbH DE
AS4230 CLARO S.A. BR
AS56655 Gigahost AS NO
AS37468 Angola Cables AO
AS2497 Internet Initiative Japan Inc. JP
AS3303 Swisscom Schweiz AG CH
AS37497 Network Platforms PTY LTD ZA
AS47692 Nessus GmbH AT
AS50673 Serverius Holding B.V. NL
AS6461 Zayo Bandwidth US
AS31713 A PCCW Company BE
AS35320 Eurotranstelecom Ltd UA
AS14840 BR.Digital Telecom BR
AS9583 Sify Limited IN
AS8881 1&1 Versatel GmbH DE
AS8434 Telenor Sverige AB SE
AS8758 Iway AG CH
AS4601 Antonios A. Chariton GR
AS9930 TT DOTCOM SDN BHD MY
AS6696 VERIXI SA BE
AS1836 green.ch AG CH
AS15412 Global Cloud Xchange GB
AS1299 Arelion Sweden AB SE
AS37282 Main one Cable Company Nigeria Limited NG
AS209090 Association Stolon FR
AS10111 Zeofast Network CN
AS8298 IPng Networks GmbH CH
AS7713 Telekomunikasi Indonesia PT ID
AS18041 Taiwan Digital Streaming Co. TW
AS32621 Twin City VoIP, Inc. US
AS2516 KDDI CORPORATION JP
AS34177 Celeste SAS FR
AS34019 Hivane Association FR
AS6777 Amsterdam Internet Exchange B.V. NL
AS52025 ParadoxNetworks Limited GB
AS1221 Telstra Limited AU
AS4455 IX Reach Ltd GB
AS3491 PCCW Global HK Limited HK
AS15958 CETIN Ltd. Belgrade RS
AS23764 China Telecom Global Limited HK
AS37100 SEACOM Limited MU
AS64126 DOMINICAN TELECOM PRIME, DTP, S.R.L. DO
AS39120 Convergenze S.p.A. IT
AS9002 RETN Limited GB
AS37271 Workonline Communications Pty Ltd ZA
AS3462 Chunghwa Telecom Co., Ltd. TW
AS6057 Administracion Nacional de Telecomunicaciones UY
AS7473 Singapore Telecommunications SINGTEL Internet Exchange SG
AS13030 Init7 Switzerland Ltd. CH
AS41327 Fiber Telecom S.p.A. IT
AS29691 Nine Internet Solutions AG CH
AS13786 Seabras 1 USA, LLC US
AS35280 F5 Networks SARL FR
AS17676 SoftBank Corp. JP
AS3356 Level 3 Parent, LLC US
AS50869 IPng Networks GmbH CH
AS8708 DIGI ROMANIA S.A. RO

Downstreams

AS Number Description Country
AS203070 Yahoo UK Limited GB
AS18293 Yahoo Inc. US
AS56173 Yahoo Inc. SG
AS16515 Yahoo Holdings Inc. US
AS36646 Yahoo Holdings Inc. US
AS14780 Yahoo Holdings Inc. US
AS14778 Yahoo Holdings Inc. US
AS7233 Yahoo US
AS203219 Yahoo UK Limited GB
AS10880 Yahoo Holdings Inc. US

Contacts

Email Contacts

rir-tech@oath.com

Abuse Contacts

network-abuse@cc.yahoo-inc.com

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Frequently Asked Questions

ASN AS10310 is an Autonomous System Number used to identify a network for BGP internet routing.
AS10310 is listed under Yahoo Holdings Inc..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.