Yahoo Holdings Inc.

BGP inherited
Complete entity footprint
3 linked clusters · 4,482 netblocks · 70,064,842 IPv4 addresses
This organisation's clusters combined by evidence — shared operating domain yahoo.com — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
Cluster stats
Netblocks909 · 1,923,033 IPv4 addresses
Registered in United States (390) · Hong Kong (81) · Singapore (34) · Japan (31) · United Kingdom (24) · Taiwan (14)
All fragments 1,099 blocks across 29 clusters
Cluster ID208783482
RegistryAFRINIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 78 shared RIR contact/maintainer handles
Registry names 28 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
912 +2 netblocks since 2026-07-05
2026-07-05 peak 912 2026-07-19

IP Ranges (909)

showing 50 of 909 — see all — ⬇ export CSV (free export limited to 500 rows — subscribe for the full export)
CIDR Org name Registry Status Confidence
5.57.81.130/32 Yahoo PEERINGDB ASSIGNED ● high
5.57.81.131/32 Yahoo PEERINGDB ASSIGNED ● high
27.111.228.3/32 Yahoo PEERINGDB ASSIGNED ● high
27.111.228.131/32 Yahoo PEERINGDB ASSIGNED ● high
27.123.33.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.34.0/23 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.37.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.42.0/24 Yahoo Inc. BGP ANNOUNCED ● high
27.123.43.0/24 Yahoo Inc. BGP ANNOUNCED ● high
27.123.44.0/22 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.60.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.61.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.192.0/23 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.123.196.0/23 Yahoo Holdings Inc. BGP ANNOUNCED ● high
27.254.19.246/32 Yahoo PEERINGDB ASSIGNED ● high
36.255.56.64/32 Yahoo PEERINGDB ASSIGNED ● high
36.255.56.147/32 Yahoo PEERINGDB ASSIGNED ● high
37.49.232.52/32 Yahoo PEERINGDB ASSIGNED ● high
37.49.232.53/32 Yahoo PEERINGDB ASSIGNED ● high
37.49.237.5/32 Yahoo PEERINGDB ASSIGNED ● high
45.127.172.163/32 Yahoo PEERINGDB ASSIGNED ● high
45.127.172.175/32 Yahoo PEERINGDB ASSIGNED ● high
62.69.146.144/32 Yahoo PEERINGDB ASSIGNED ● high
63.250.192.0/19 Yahoo Holdings Inc. BGP ANNOUNCED ● high
63.250.196.0/22 Yahoo Holdings Inc. BGP ANNOUNCED ● high
63.250.200.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
63.250.204.0/22 Yahoo Holdings Inc. BGP ANNOUNCED ● high
63.250.207.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.163.168.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.163.176.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.163.184.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.64.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.70.0/23 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.80.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.88.0/22 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.88.0/23 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.104.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.109.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.196.112.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.218.80.0/20 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.218.84.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.218.85.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.218.86.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
66.218.87.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
67.195.0.0/17 Yahoo Holdings Inc. BGP ANNOUNCED ● high
67.195.4.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
67.195.33.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
67.195.39.0/24 Yahoo Holdings Inc. BGP ANNOUNCED ● high
67.195.128.0/20 Yahoo Holdings Inc. BGP ANNOUNCED ● high
67.195.144.0/21 Yahoo Holdings Inc. BGP ANNOUNCED ● high

Domains hosted in this network

what's this?
yahoo.com yahoo.co.jp yimg.jp line.me line-apps.com fivecdm.com yahooapis.jp line-scdn.net akadns.net yjtag.jp lin.ee yahoo.jp yahoodns.net livedoor.jp storage-yahoo.jp yahoo.net line.biz livedoor.com naver.jp

Customer-delegated space

how is this classified?
Unclassified 605 (66.6%)
Operator infrastructure (named) 304 (33.4%)

Network trust

what's this?
RPKI hygiene: D how networks compare →
28.8% of checked blocks have valid RPKI ROA coverage (262 of 909)
No discrepancies found among checked blocks.

NIC Handles

APNIC-HM AS10229 AS10230 AS10310 AS10310 AS10880 AS12301-MNT AS14196 AS14776 AS14777 AS14778 AS14779 +66 more