Autonomous system
AS7922 COMCAST-7922
Residential ARIN Cable/DSL/ISP
Summary
Comcast Cable Communications
residential eyeball isp
Comcast's main Autonomous System, serving residential and business broadband (Xfinity) across large parts of the United States.
What it's used for
- Home and business internet access — this is an "eyeball" network full of end-user connections rather than servers.
- Comcast's own services and its large regional backbone.
Notable
- An IP in AS7922 almost always maps to a subscriber, so it is a normal source for consumer web browsing, gaming, and streaming — not hosting.
- Comcast operates one of the largest broadband footprints in the US and peers and caches heavily to keep popular content local.
Interesting
- Comcast was an early large-scale deployer of IPv6 to residential customers, driven by the exhaustion of IPv4 for its millions of subscribers.
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
20 upstream, 111 downstream and 218 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3,581 prefixes · 42.06M addresses IPv6 1,981 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5,562 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS7922- Registry name
- COMCAST-7922
- Registrant
- Comcast Cable Communications, LLC
- Abuse contact
- abuse@comcast.net
- Registered
- 1997-02-14
- Last changed
- 2021-01-25
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Comcast
- Also known as
- Comcast Backbone - 7922
- Network type
- Cable/DSL/ISP
- Scope
- North America
- Traffic ratio
- Balanced
- Peering policy
- Selective
- IRR as-set
RADB::AS-COMCAST-IBONE- Facilities
- 27 facilities
- Website
- https://corporate.comcast.com/
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
- 99.5% valid · 429 valid, 2 with no ROA
- ROAs
- 775 authorising AS7922
- ASPA
- no ASPA record
- IRR
- 100% registered · 431 of 431 announcements
- Route objects
- 648 naming AS7922
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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