$ query “AS33661” --type=asn → 1 result(s)
AS33661 — CMCS
Comcast Cable Communications LLC
AS33661 is a mid-size transit provider registered to Comcast Cable Communications LLC, registered in the United States since 2005. The network announces 1 792 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 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 7 / 7
- IPv6 Prefixes (raw / aggregated)
- 16 / 16
- IPv4 Addresses
- 1 792
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /48
- Geolocated Countries
- 🇺🇸 US (7 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 1 792 total (0.00%)
Connectivity Summary
- Upstream Providers
- 1 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 18 downstream autonomous systems buying transit
- Degree
- 21 unique BGP neighbors (providers + customers + peers)
- Reach
- 23 — customer cone size measuring network influence
- Degree Rank
- #7 349
- Reach Rank
- #2 142
Upstream Providers (1)
- AS7922 — COMCAST-7922
Prefix Lists
IPv4 Prefixes (7 total)
- 50.218.97.0/24 (256 addresses)
- 50.220.33.0/24 (256 addresses)
- 50.226.0.0/24 (256 addresses)
- 50.227.97.0/24 (256 addresses)
- 50.228.116.0/24 (256 addresses)
- 50.236.155.0/24 (256 addresses)
- 50.237.76.0/24 (256 addresses)
IPv6 Prefixes (16 total)
- 2001:559:135::/48
- 2001:559:4ed::/48
- 2001:559:4ee::/48
- 2001:559:731::/48
- 2001:559:82f9::/48
- 2001:559:830d::/48
- 2001:559:8320::/48
- 2001:559:8462::/48
- 2001:559:85d6::/48
- 2001:559:864f::/48
- 2001:559:878c::/48
- 2001:559:87d4::/48
- 2001:559:c202::/48
- 2001:559:c22b::/48
- 2001:559:c4b9::/48
- 2001:559:c4ea::/48