AS26101 YAHOO-BF1 - Yahoo Holdings Inc.

🇺🇸

ARINassigned

Announced Prefixes (BGP)

83total

76 IPv47 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)137,984

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)1.9×10²⁵

Prefix Limit (IPv4)

200

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2002-07-05

Announced Prefixes

(BGP)83

Prefix	RPKI	IRR	Last Seen
63.250.196.0/22	No ROA	Other IRR	2026-10-10
63.250.200.0/21	No ROA	Other IRR	2026-10-10
66.196.80.0/21	No ROA	Other IRR	2026-10-10
66.196.88.0/23	No ROA	-	2026-10-10
66.196.104.0/21	No ROA	Other IRR	2026-10-10
66.196.109.0/24	No ROA	Other IRR	2026-10-10
66.196.112.0/21	No ROA	Other IRR	2026-10-10
66.218.80.0/20	No ROA	Other IRR	2026-10-10
66.218.84.0/24	No ROA	Other IRR	2026-10-10
66.218.85.0/24	No ROA	Other IRR	2026-10-10

1-10 of 83

1 / 9

(seen in AS paths)

Networks AS26101 hands its own prefixes to: transit providers, or peers at an exchange.

Registry transfers of AS26101 between organisations.

Date	Resource	From	To	Type
2019-05-01	AS26101	Yahoo! 🇺🇸 US ARIN	Oath Holdings Inc. 🇺🇸 US ARIN	M&A

ASPA

No ASPA

External Links

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS26101 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/26101" | jq