$ query “AS33668” --type=asn → 1 result(s)
AS33668 — CMCS
Comcast Cable Communications LLC
AS33668 is a major transit provider registered to Comcast Cable Communications LLC, established in the United States in 2005. The network announces 6 912 IPv4 addresses. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇺🇸 United States
- Category
- Internet Service Provider
- Network Role
- Major 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)
- 27 / 27
- IPv6 Prefixes (raw / aggregated)
- 73 / 70
- IPv4 Addresses
- 6 912
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /47
- Geolocated Countries
- 🇺🇸 US (28 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 6 912 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 71 downstream autonomous systems buying transit
- Degree
- 73 unique BGP neighbors (providers + customers + peers)
- Reach
- 34 970 — customer cone size measuring network influence
- Degree Rank
- #2 306
- Reach Rank
- #237
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (27 total)
- 50.202.125.0/24 (256 addresses)
- 50.203.250.0/24 (256 addresses)
- 50.204.170.0/24 (256 addresses)
- 50.206.127.0/24 (256 addresses)
- 50.207.92.0/24 (256 addresses)
- 50.217.249.0/24 (256 addresses)
- 50.220.170.0/24 (256 addresses)
- 50.221.158.0/24 (256 addresses)
- 50.223.155.0/24 (256 addresses)
- 50.226.70.0/24 (256 addresses)
- 50.227.241.0/24 (256 addresses)
- 50.228.137.0/24 (256 addresses)
- 50.229.7.0/24 (256 addresses)
- 50.232.15.0/24 (256 addresses)
- 50.233.62.0/24 (256 addresses)
- 50.233.114.0/24 (256 addresses)
- 50.238.250.0/24 (256 addresses)
- 50.239.133.0/24 (256 addresses)
- 107.0.213.0/24 (256 addresses)
- 157.240.130.0/24 (256 addresses)
- 157.240.135.0/24 (256 addresses)
- 192.88.105.0/24 (256 addresses)
- 192.138.205.0/24 (256 addresses)
- 198.180.251.0/24 (256 addresses)
- 198.199.172.0/24 (256 addresses)
- 206.201.156.0/24 (256 addresses)
- 206.201.158.0/24 (256 addresses)
IPv6 Prefixes (73 total)
- 2001:559:25c::/47
- 2001:559:817a::/47
- 2001:559:85fa::/47
- 2001:559:44::/48
- 2001:559:f2::/48
- 2001:559:10d::/48
- 2001:559:10e::/48
- 2001:559:15c::/48
- 2001:559:1ef::/48
- 2001:559:248::/48
- 2001:559:254::/48
- 2001:559:261::/48
- 2001:559:270::/48
- 2001:559:318::/48
- 2001:559:330::/48
- 2001:559:33d::/48
- 2001:559:361::/48
- 2001:559:365::/48
- 2001:559:391::/48
- 2001:559:3ce::/48
- 2001:559:3d9::/48
- 2001:559:3fe::/48
- 2001:559:5a4::/48
- 2001:559:5c8::/48
- 2001:559:704::/48
- 2001:559:7e0::/48
- 2001:559:7e7::/48
- 2001:559:8093::/48
- 2001:559:809e::/48
- 2001:559:80ac::/48
- 2001:559:815e::/48
- 2001:559:819d::/48
- 2001:559:82d7::/48
- 2001:559:82f7::/48
- 2001:559:835e::/48
- 2001:559:83e5::/48
- 2001:559:8441::/48
- 2001:559:8473::/48
- 2001:559:847f::/48
- 2001:559:84c0::/48
- 2001:559:84db::/48
- 2001:559:8567::/48
- 2001:559:8577::/48
- 2001:559:860e::/48
- 2001:559:86b7::/48
- 2001:559:86cd::/48
- 2001:559:8709::/48
- 2001:559:8730::/48
- 2001:559:8752::/48
- 2001:559:8774::/48