Autonomous system
AS33654 CMCS
Unclassified ARIN Cable/DSL/ISP
Summary
Comcast Cable Communications
residential cable isp us
The AS handle CMCS is held by Comcast Cable Communications, LLC.
What it's used for
- The space carries residential cable internet and VoIP services, evidenced by reverse DNS entries like
c-98-60-127-255.hsd1.nm.comcast.netand netnames such asCOMCAST-VOIP-4. - With 337,920 IPv4 addresses announced across 64 prefixes and only 14 observed neighbours, the high address-to-neighbour ratio indicates a large access/eyeball network rather than a transit provider.
Notable
- Registrants are consistent with the announcer, appearing as either Comcast Cable Communications, LLC or Comcast Cable Communications, Inc.
- The address inventory is heavily concentrated in the Albuquerque region, as indicated by netnames like
ALBUQUERQUE-24,ALBUQUERQUE-14, andALBUQUERQUE-17. - The inventory includes a mix of /16, /17, and /18 blocks, with the largest being 98.60.0.0/16.
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, 14 downstream and 19 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS7922 | Comcast Cable Communications, LLC | 512 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 64 prefixes · 338K addresses IPv6 22 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 86 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33654- Registry name
- CMCS
- Registrant
- Comcast Cable Communications, LLC
- Abuse contact
- abuse@comcast.net
- Registered
- 2005-02-16
- Last changed
- 2021-01-25
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Comcast - Albuquerque
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Not Disclosed
- Peering policy
- Restrictive
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 16 valid, 0 with no ROA
- ROAs
- 109 authorising AS33654
- ASPA
- no ASPA record
- IRR
- 100% registered · 16 of 16 announcements
- Route objects
- 108 naming AS33654
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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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