Autonomous system
AS10310 YAHOO-1
Hosting ARIN
Summary
Yahoo
content web legacy
Yahoo (YAHOO-1) — the veteran web portal, search, and email provider, still serving a large mail and media audience.
What it's used for
- Yahoo's own services: Yahoo Mail, the Yahoo portal, Yahoo Finance/Sports, and related media properties.
Notable
- First-party services rather than third-party hosting.
- Yahoo (with AOL) now sits under the "Yahoo Inc." group owned by Apollo Global Management, after years inside Verizon.
Interesting
- Yahoo was one of the internet's defining early portals; its network still carries one of the larger webmail user bases despite the company's decline from its dot-com peak.
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
Recorded at 85 exchanges in 26 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.218.31 |
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.192.115 |
| IX.br (PTT.br) Fortaleza | Fortaleza, Brazil | 45.68.72.168 |
| LINX LON1 | London, United Kingdom | 195.66.224.115 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.209.110 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.116.216 |
| NAPAfrica IX Johannesburg | Johannesburg, South Africa | 196.60.9.73 |
| France-IX Paris | Paris, France | 37.49.237.5 |
Transit providers
66 upstream, 31 downstream and 163 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 84 prefixes · 78.08K addresses IPv6 366 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 450 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10310- Registry name
- YAHOO-1
- Registrant
- Yahoo Holdings Inc.
- Abuse contact
- rir-abuse@yahooinc.com
- Registered
- 2001-11-14
- Last changed
- 2019-05-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 6% valid · 7 valid, 103 with no ROA
- ROAs
- 15 authorising AS10310
- ASPA
- no ASPA record
- IRR
- 97% registered · 107 of 110 announcements 2 other origin
- Route objects
- 212 naming AS10310
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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