AS36229 Yahoo Holdings Inc.

YAHOO-YSM-SC8 - Yahoo Holdings Inc. · registered in the United States

IPv4 addresses7682 prefixes · <0.001% of announced IPv4

Rank in United States#9,227largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#43,418of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS36229 in ASN lookup Look up an IP in this network (209.73.188.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

209.73.188.0/24
209.73.190.0/23

IPv6 prefixes

All 1 prefix.

2001:4998:28::/48

Other ASNs named Yahoo Holdings Inc.

18 other networks use the same organisation name; together with AS36229 they announce 493,568 IPv4 addresses.

ASNNameIPv4 addresses

AS36647YAHOO-GQ1 - Yahoo Holdings Inc. US184,320

AS26101YAHOO-BF1 - Yahoo Holdings Inc. US121,344

AS36646YAHOO-NE1 - Yahoo Holdings Inc. US94,720

AS10310YAHOO-1 - Yahoo Holdings Inc. US78,080

AS7280YAHOO-FC - Yahoo Holdings Inc. US2,304

AS14778YAHOO - Yahoo Holdings Inc. US1,536

AS10880YAHOO-AN2 - Yahoo Holdings Inc. US1,536

AS14777YAHOO - Yahoo Holdings Inc. US1,280

AS36088YAHOO-BCST-AC2 - Yahoo Holdings Inc. US1,280

AS5779YAHOO-DNB - Yahoo Holdings Inc. US768

AS14196YAHOO-CHA - Yahoo Holdings Inc. US768

AS14776YAHOO - Yahoo Holdings Inc. US768

AS14779YAHOO - Yahoo Holdings Inc. US768

AS14780YAHOO - Yahoo Holdings Inc. US768

AS36752YAHOO-SP1 - Yahoo Holdings Inc. US768

AS393245YAHOO-SWB - Yahoo Holdings Inc. US768

AS4866POLYVORE - Yahoo Holdings Inc. US768

AS16515ALTAVISTA - Yahoo Holdings Inc. US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS26329#9224 INSERVER-NETWORKS - InServer Networks768

AS36171#9225 STRASMORE - Strasmore, Inc.768

AS36193#9226 WALLEYE-TRADING - Walleye Capital LLC768

AS36752#9228 YAHOO-SP1 - Yahoo Holdings Inc.768

AS36824#9229 ADTAQ - Adtaq Internet, LLC768

AS40271#9230 SFMIX-TRANSIT - San Francisco Metropolitan Internet Exchange (SFMIX)768

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources