Autonomous system
AS4468 EASYLINK4
Unclassified ARIN
Summary
AT&T (EasyLink)
enterprise legacy
An AT&T autonomous system registered with ARIN in 1995 and held today by AT&T Enterprises, LLC, under the legacy EASYLINK4 handle.
What it's used for
- Announcing a handful of AT&T prefixes, mostly out of
204.127.0.0/16, in support of AT&T-run services. - A small, special-purpose ASN — not one of AT&T's major transit or consumer broadband networks.
Notable
- The address space is corporate rather than residential: these routes back AT&T's own service infrastructure, not home subscriber pools.
- Sibling of AS4466, which carries the matching
EASYLINK2handle from the same registration batch.
Interesting
- The EasyLink name traces back to the electronic messaging, fax, and telex business AT&T bought from Western Union in 1990. The product line eventually moved on to other companies; the AS handle did not.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS4468- Registry name
- EASYLINK4
- Registrant
- AT&T Enterprises, LLC
- Abuse contact
- abuse@att.net
- Registered
- 1995-03-05
- Last changed
- 2025-03-18
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 6 with no ROA
- ROAs
- 0 authorising AS4468
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 17 naming AS4468
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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