$ query “AS33666” --type=asn → 1 result(s)
AS33666 — CMCS
Comcast Cable Communications LLC
AS33666 is a mid-size transit provider run by Comcast Cable Communications LLC, based in the United States since 2005. The network announces 1 024 IPv4 addresses. Supports IPv6.
Basic Information
- Country
- 🇺🇸 United States
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- February 16, 2005
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 4 / 4
- IPv6 Prefixes (raw / aggregated)
- 3 / 3
- IPv4 Addresses
- 1 024
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /48
- Geolocated Countries
- 🇺🇸 US (5 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 1 024 total (0.00%)
Connectivity Summary
- Upstream Providers
- 1 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 6 downstream autonomous systems buying transit
- Degree
- 7 unique BGP neighbors (providers + customers + peers)
- Reach
- 34 928 — customer cone size measuring network influence
- Degree Rank
- #12 815
- Reach Rank
- #335
Upstream Providers (1)
- AS7922 — COMCAST-7922
Prefix Lists
IPv4 Prefixes (4 total)
- 66.170.177.0/24 (256 addresses)
- 66.170.179.0/24 (256 addresses)
- 199.74.174.0/24 (256 addresses)
- 199.120.255.0/24 (256 addresses)
IPv6 Prefixes (3 total)
- 2001:559:195::/48
- 2001:559:233::/48
- 2001:559:c507::/48