Autonomous system
AS33668 CMCS
Residential APNIC
IPv4 addresses
1.86M
192 prefixes
IPv6 prefixes
75
counted as prefixes, not addresses
Countries
1
mostly US
Flagged prefixes
0
none
Summary
Comcast (regional)
isp residential eyeball cable
Comcast Cable Communications (CC04) — one of Comcast's regional ASNs, part of
the Xfinity residential network.
What it's used for
- Cable and fibre home internet for US households.
Notable
- An "eyeball" network: addresses here are home connections, commonly behind carrier-grade NAT, not servers.
- Comcast operates several regional ASNs that all roll up to the Xfinity network; the primary one is [AS7922](https://asn.ipinfo.app/AS7922).
Interesting
- Regional Comcast ASNs like this reflect the company's growth by acquiring and integrating local cable systems across the country.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 267 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS33668- Registry name
- CMCS
- Registrant
- Comcast Cable Communications, LLC
- Abuse contact
- abuse@comcast.net
- Registered
- 2005-02-16
- Last changed
- 2021-01-25
- Status
- active
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere