Autonomous system
AS14780 YAHOO
Unclassified ARIN
Summary
Yahoo Holdings
media hosting infrastructure
One block is numbered into a series, the other is named after something the company bought.
What it's used for
- One of a run of numbers a large web company uses for its edge sites. 768 IPv4 addresses across two prefixes, one IPv6 prefix, and one observed BGP neighbour.
Notable
68.180.134.0/23carries the netnameA-YAHOO-US6, the sixth entry in a numbered series.209.73.189.0/24carriesINTERNET-BLK-1-AV, which follows no such scheme and ends in two letters naming a different product.- Two of the six sampled addresses answer as router interfaces,
et18-1.bas3-1-edg.mib.yahoo.comandet51.rsw6-1-edg.mib.yahoo.com. - The other four answer as
unknown.yahoo.com.
Interesting
- Those two interface names appear, digit for digit, under other numbers in this same run, with only the three-letter site code changed. The naming is generated from a template applied identically at every site, so the same port on the same box has the same name everywhere and the location is the only variable.
- A wildcard answering everything else as unknown is a way of publishing that an address exists without publishing what it does. It satisfies software that insists on a reverse name and tells a stranger nothing.
- The block whose netname breaks the pattern is the older one, inherited with a product rather than requested as part of a numbering plan. Nobody renamed it, because the name still resolves to the right owner.
- One observed upstream for an edge site is normal: these announcements exist to be heard locally, not to be carried far.
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
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.
| AS | Network | Paths seen |
|---|---|---|
| AS10310 | Yahoo Holdings Inc. | 218 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 768 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS14776- Registry name
- YAHOO
- Registrant
- Yahoo Holdings Inc.
- Abuse contact
- rir-abuse@yahooinc.com
- Registered
- 2000-02-07
- Last changed
- 2020-07-21
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS14780
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 18 naming AS14780
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 1,771 prefixes, as published 2026-10-15. 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