asn.dev

Autonomous system

AS36647 YAHOO-GQ1

Unclassified ARIN

IPv4 addresses 184K 84 prefixes
IPv6 prefixes 5 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Yahoo

United States of America · AI-generated

business infrastructure corporate

The AS handle YAHOO-GQ1 is held by Yahoo Holdings Inc.

What it's used for

  • The address space carries corporate infrastructure, evidenced by netnames such as A-YAHOO-US8, A-YAHOO-US9, and INKTOMI-BLK-6, all registered to Yahoo Holdings Inc.
  • With 184,320 IPv4 addresses and 84 IPv4 prefixes announced against a single observed neighbour, the inventory represents a large, self-contained internal corporate estate rather than a transit or access network.

Notable

  • All sampled registrants align with the announcer, consistently listing Yahoo Holdings Inc. as the holder for prefixes like 67.195.64.0/18 and 98.136.128.0/19.
  • The netname INKTOMI-BLK-6 reflects historical address space inherited from the 1996 merger between Yahoo and Inktomi, a key event in the company's early infrastructure development.
  • The inventory is finely subdivided into numerous /20 and /21 blocks, indicating site-by-site segmentation typical of a major technology corporation's internal network.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS10310Yahoo Holdings Inc.4,298

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 84 prefixes · 184K addresses IPv6 5 prefixes

CountryNamePrefixes
USUnited States of America89

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS36647
Registry name
YAHOO-GQ1
Registrant
Yahoo Holdings Inc.
Abuse contact
rir-abuse@yahooinc.com
Registered
2006-03-02
Last changed
2019-05-01
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 75 with no ROA
ROAs
0 authorising AS36647
ASPA
no ASPA record
IRR
100% registered · 75 of 75 announcements
Route objects
98 naming AS36647

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,781 prefixes, as published 2026-10-16. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check