asn.dev

Autonomous system

AS22258 COMCAST-22258

Unclassified ARIN

IPv4 addresses 664K 94 prefixes
IPv6 prefixes 22 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 14 downstream
Flagged prefixes 0 none

Summary

Comcast

United States of America · AI-generated

cable residential isp access

COMCAST-22258 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 such as c-75-64-128-0.hsd1.ms.comcast.net and c-76-107-127-255.hsd1.tn.comcast.net.
  • With 664,064 IPv4 addresses announced against only 16 observed neighbours, the ratio indicates a large-scale access or eyeball network rather than a transit provider.

Notable

  • Registrants include Comcast Cable Communications Holdings, Inc, Comcast Cable Communications, Inc., and Comcast Cable Communications, LLC, all consistent with the announcer.
  • The inventory is finely subdivided into 94 IPv4 prefixes, with netnames like MEMPHIS-1 and HATTIESBURG-LAUREL-5 reflecting site-by-site segmentation for the Memphis and Hattiesburg/Laurel markets.

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

1 upstream, 14 downstream and 18 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS7922Comcast Cable Communications, LLC775

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 94 prefixes · 664K addresses IPv6 22 prefixes

CountryNamePrefixes
USUnited States of America116

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS22258
Registry name
COMCAST-22258
Registrant
Comcast Cable Communications, LLC
Abuse contact
abuse@comcast.net
Registered
2001-08-27
Last changed
2021-01-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
80% valid · 16 valid, 4 with no ROA
ROAs
1,623 authorising AS22258
ASPA
no ASPA record
IRR
20% registered · 4 of 20 announcements
Route objects
21 naming AS22258

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 1,781 prefixes, as published 2026-10-16. 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