asn.dev

Autonomous system

AS33650 COMCAST-33650

Unclassified ARIN

IPv4 addresses 3.58K 12 prefixes
IPv6 prefixes 105 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 71 downstream
Flagged prefixes 0 none

Summary

Comcast Cable Communications

United States of America · AI-generated

residential cable isp business

COMCAST-33650 is operated by Comcast Cable Communications, LLC.

What it's used for

  • The address space carries residential and business internet services, evidenced by registrant netnames such as CCCH3-4 and JUMPSTART-5, and reverse DNS entries like CL.GMNAMEPLATE.COM.
  • The AS announces 3584 IPv4 addresses across 12 prefixes and 106 IPv6 prefixes, while maintaining 71 observed neighbours; this ratio of moderate address space against a high neighbour count indicates a regional access network providing transit to end-users.

Notable

  • Registrants for the majority of prefixes align with the announcer, specifically Comcast Cable Communications, LLC, though two prefixes are registered to The Point Casino & Hotel and MultiCare Health System.
  • The address inventory consists of a mix of /23 and /24 IPv4 blocks, with the largest being 50.226.76.0/23 and 50.234.46.0/23, alongside a set of /48 IPv6 prefixes.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 71 downstream and 80 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS7922Comcast Cable Communications, LLC4,098
AS3356Level 3 Parent, LLC42

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 12 prefixes · 3.58K addresses IPv6 105 prefixes

CountryNamePrefixes
USUnited States of America117

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS33650
Registry name
COMCAST-33650
Registrant
Comcast Cable Communications, LLC
Abuse contact
abuse@comcast.net
Registered
2005-02-16
Last changed
2021-01-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
98% valid · 118 valid, 2 with no ROA
ROAs
377 authorising AS33650
ASPA
no ASPA record
IRR
91% registered · 109 of 120 announcements 1 other origin
Route objects
206 naming AS33650

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 1,773 prefixes, as published 2026-10-13. 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

Cross-check