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AS36647 Yahoo Holdings Inc.

YAHOO-GQ1 - Yahoo Holdings Inc. · registered in the United States

IPv4 addresses184,32084 prefixes · 0.006% of announced IPv4
Rank in United States#351largest network in US by IPv4 space, of 18,338 · 0.01% of US
Rank worldwide#1,155of 79,396 networks with IPv4
IPv614 x /485 prefixes
CountryUnited States18,679 ASNs registered there
Open AS36647 in ASN lookup Look up an IP in this network (63.250.192.1) All networks in United States

IPv4 prefixes

All 84 prefixes, in address order.

  • 63.250.192.0/22
  • 63.250.204.0/22
  • 63.250.208.0/20
  • 67.195.0.0/22
  • 67.195.4.0/24
  • 67.195.5.0/24
  • 67.195.6.0/23
  • 67.195.8.0/21
  • 67.195.16.0/20
  • 67.195.32.0/23
  • 67.195.34.0/23
  • 67.195.36.0/22
  • 67.195.40.0/21
  • 67.195.48.0/20
  • 67.195.64.0/18
  • 67.195.128.0/20
  • 67.195.144.0/21
  • 67.195.160.0/20
  • 67.195.224.0/21
  • 68.142.240.0/21
  • 68.180.192.0/19
  • 68.180.224.0/20
  • 68.180.240.0/24
  • 68.180.241.0/24
  • 68.180.242.0/23
  • 68.180.244.0/22
  • 68.180.248.0/21
  • 69.147.96.0/20
  • 74.6.32.0/23
  • 74.6.34.0/24
  • 74.6.35.0/24
  • 74.6.36.0/22
  • 74.6.40.0/21
  • 74.6.52.0/22
  • 74.6.56.0/21
  • 74.6.160.0/23
  • 74.6.162.0/23
  • 74.6.164.0/22
  • 74.6.168.0/22
  • 74.6.172.0/22
  • 74.6.176.0/20
  • 74.6.192.0/19
  • 98.136.100.0/23
  • 98.136.102.0/23
  • 98.136.112.0/22
  • 98.136.128.0/19
  • 98.136.192.0/20
  • 98.136.208.0/20
  • 98.136.224.0/23
  • 98.136.226.0/23
  • 98.136.228.0/22
  • 98.136.232.0/21
  • 98.136.240.0/20
  • 98.137.0.0/23
  • 98.137.2.0/23
  • 98.137.4.0/22
  • 98.137.8.0/21
  • 98.137.16.0/21
  • 98.137.24.0/22
  • 98.137.28.0/22
  • 98.137.32.0/19
  • 98.137.64.0/20
  • 98.137.96.0/19
  • 98.137.160.0/21
  • 98.137.168.0/23
  • 98.137.170.0/24
  • 98.137.171.0/24
  • 98.137.172.0/22
  • 98.137.176.0/20
  • 98.137.224.0/19
  • 98.139.112.0/21
  • 98.139.120.0/22
  • 206.190.32.0/21
  • 206.190.40.0/22
  • 206.190.44.0/23
  • 206.190.46.0/24
  • 206.190.47.0/24
  • 206.190.48.0/21
  • 208.71.40.0/22
  • 208.71.44.0/23
  • 208.71.46.0/24
  • 208.71.47.0/24
  • 216.39.48.0/21
  • 216.39.56.0/21

IPv6 prefixes

All 5 prefixes.

  • 2001:4998:c::/46
  • 2001:4998:24::/46
  • 2001:4998:198::/46
  • 2001:4998:ef6b::/48
  • 2001:4998:eff5::/48

Other ASNs named Yahoo Holdings Inc.

18 other networks use the same organisation name; together with AS36647 they announce 493,568 IPv4 addresses.

ASNNameIPv4 addresses
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
AS36229YAHOO-YSM-SC8 - 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
AS8030#348 WORLDNET5-10 - AT&T WorldNet190,976
AS54290#349 HOSTWINDS - Hostwinds LLC.190,720
AS13767#350 DATABANK-DFW - DataBank Holdings, Ltd.190,464
AS7065#352 SNIC - Sonic.net, LLC181,504
AS40676#353 AS40676 - Psychz Networks180,736
AS7203#354 LEASEWEB-USA-SFO - Leaseweb USA, Inc.180,480

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