Autonomous system
AS33489 COMCAST-33489
Unclassified ARIN Cable/DSL/ISP
Summary
Comcast
residential cable isp xfinity
COMCAST-33489 is operated by Comcast Cable Communications, LLC.
What it's used for
- The address space carries residential cable internet traffic, evidenced by reverse DNS entries like
c-24-129-63-255.hsd1.fl.comcast.netand netnames such asJACKSONVILLE-CPE-1andCHARLESTON-CPE-16. - The AS announces 648192 IPv4 addresses across 186 prefixes and 61 IPv6 prefixes, while maintaining only 23 observed neighbours, a ratio characteristic of a large access network.
Notable
- Registrants for the largest prefixes are consistently
Comcast Cable Communications, LLC, with one entry (SAVANNAH-25) listed underComcast Comcast Cable Communications, Inc. - The inventory is heavily concentrated in the Jacksonville, Florida region, as indicated by multiple
JACKSONVILLE-CPEnetnames, alongside smaller allocations in Savannah and Charleston. - The address inventory consists of numerous /17 and /18 blocks, reflecting a finely subdivided corporate estate for regional cable operations.
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 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 186 prefixes · 648K addresses IPv6 62 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 248 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33489- Registry name
- COMCAST-33489
- Registrant
- Comcast Cable Communications, LLC
- Abuse contact
- abuse@comcast.net
- Registered
- 2004-12-30
- Last changed
- 2021-01-25
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Comcast - Jacksonville
- Also known as
- Comcast - Jacksonville
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Not Disclosed
- Peering policy
- Restrictive
- Facilities
- 1 facilities
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
- 93% valid · 41 valid, 3 with no ROA
- ROAs
- 309 authorising AS33489
- ASPA
- no ASPA record
- IRR
- 77% registered · 34 of 44 announcements 3 other origin
- Route objects
- 87 naming AS33489
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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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