Autonomous system
AS5778 CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLC
Residential ARIN
Summary
CenturyLink (legacy Embarq)
isp eyeball residential dsl legacy
CENTURYLINK-LEGACY-EMBARQ-RCMT is a CenturyLink Communications, LLC network carrying the former Embarq local-telephone footprint. It is an eyeball ISP: the addresses here are mostly homes and small businesses on DSL.
What it's used for
- Consumer and small-business broadband over the incumbent telephone plant that CenturyLink inherited from Embarq, spread across that company's local-exchange territories.
Notable
- This is residential/business access space, so an IP here is usually a subscriber line rather than a server. Reverse DNS across the range lands on
embarqhsd.net("Embarq High Speed Data"), still bearing the old brand years after the merger. - A large eyeball footprint of roughly 173,000 addresses across about 90 prefixes, typical of an ILEC's fragmented DSL pools.
- Some of the space is assigned to institutional customers on the same plant, so not every IP is a household.
Interesting
- The name is a fossil record of two acquisitions. Embarq was spun off from Sprint as a standalone local-telephone company in 2006, then acquired by CenturyTel in 2009 to form CenturyLink. The AS handle still says
EMBARQ.
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 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS22561 | CenturyLink Communications, LLC | 518 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 1.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5778- Registry name
- CENTURYLINK-LEGACY-EMBARQ-RCMT
- Registrant
- CenturyLink Communications, LLC
- Abuse contact
- abuse@aup.lumen.com
- Registered
- 1995-10-18
- Last changed
- 2018-08-14
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 98 with no ROA
- ROAs
- 0 authorising AS5778
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 98 announcements
- Route objects
- 0 naming AS5778
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 447 networks and 1,843 prefixes, as published 2026-11-02. 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