Autonomous system
AS14921 CENTURYLINK-LEGACY-EMBARQ-HDRV - CenturyLink Communications, LLC
Unclassified ARIN
Summary
CenturyLink (legacy Embarq)
isp telecom infrastructure
Two addresses four apart in the same block claim to be in different states.
What it's used for
- A consumer broadband network inherited through a chain of acquisitions. 61,440 addresses across 31 IPv4 prefixes, with one observed BGP neighbour and no IPv6 announced.
Notable
- Every netname reads
CENTURYLINK-LEGACY-EMBARQ-BKL-followed by a number, and several different numbers appear across the 31 prefixes. - Every one of them is registered to
CenturyLink Communications, LLC. - All eighteen sampled addresses returned a name, every one under
embarqhsd.net, in three zones:dyn,dhcpandsta. - Two of them are
fl-67-237-100-0.sta.embarqhsd.netandor-67-237-103-255.sta.embarqhsd.net.
Interesting
- Those two sit inside the same
/20, and their names give different states. A block that small does not span a country, so at least one label is wrong. The state code is written when a range is provisioned and never checked again, so a reassigned block keeps whichever code it was born with. - The netname says
LEGACYout loud. A carrier that has absorbed several others keeps the old brand in the record precisely so its own engineers know which acquisition a block came from. - Eighteen of eighteen addresses answering is unusual in this range. Consumer broadband names every line whether anything is listening or not, because the naming is generated from the provisioning system rather than from what exists.
- One neighbour holding 31 prefixes: this is a piece of a much larger carrier rather than a network in its own right.
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 |
|---|---|---|
| AS209 | CenturyLink Communications, LLC | 2,074 |
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 31 prefixes · 61.44K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 31 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS14921- Registry name
- CENTURYLINK-LEGACY-EMBARQ-HDRV
- Registrant
- CenturyLink Communications, LLC
- Abuse contact
- abuse@aup.lumen.com
- Registered
- 2006-09-29
- Last changed
- 2018-08-14
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 34 with no ROA
- ROAs
- 0 authorising AS14921
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 34 announcements
- Route objects
- 0 naming AS14921
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: 449 networks and 1,846 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