$ query “AS33490” --type=asn → 1 result(s)
AS33490 — COMCAST-33490
Comcast Cable Communications LLC
AS33490 is a major transit provider registered to Comcast Cable Communications LLC, established in the United States in 2004. The network announces a respectable 17 408 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
- December 30, 2004
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 41 / 39
- IPv6 Prefixes (raw / aggregated)
- 61 / 53
- IPv4 Addresses
- 17 408
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /47
- Geolocated Countries
- 🇺🇸 US (34 IPs), 🇯🇵 JP (1 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 17 408 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 60 downstream autonomous systems buying transit
- Degree
- 64 unique BGP neighbors (providers + customers + peers)
- Reach
- 34 973 — customer cone size measuring network influence
- Degree Rank
- #2 514
- Reach Rank
- #235
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (41 total)
- 104.145.48.0/20 (4 096 addresses)
- 216.122.120.0/21 (2 048 addresses)
- 74.50.12.0/22 (1 024 addresses)
- 50.238.126.0/23 (512 addresses)
- 104.247.154.0/23 (512 addresses)
- 173.211.82.0/23 (512 addresses)
- 204.76.180.0/23 (512 addresses)
- 50.204.255.0/24 (256 addresses)
- 50.206.113.0/24 (256 addresses)
- 50.228.52.0/24 (256 addresses)
- 50.228.76.0/24 (256 addresses)
- 50.229.227.0/24 (256 addresses)
- 50.232.199.0/24 (256 addresses)
- 50.236.220.0/24 (256 addresses)
- 72.19.22.0/24 (256 addresses)
- 74.49.229.0/24 (256 addresses)
- 74.49.241.0/24 (256 addresses)
- 74.49.243.0/24 (256 addresses)
- 74.49.245.0/24 (256 addresses)
- 74.49.247.0/24 (256 addresses)
- 107.0.49.0/24 (256 addresses)
- 107.0.67.0/24 (256 addresses)
- 129.134.133.0/24 (256 addresses)
- 129.134.134.0/24 (256 addresses)
- 140.99.27.0/24 (256 addresses)
- 140.99.59.0/24 (256 addresses)
- 140.99.123.0/24 (256 addresses)
- 140.99.151.0/24 (256 addresses)
- 140.99.211.0/24 (256 addresses)
- 192.83.221.0/24 (256 addresses)
- 199.244.171.0/24 (256 addresses)
- 199.244.172.0/24 (256 addresses)
- 204.76.179.0/24 (256 addresses)
- 204.93.162.0/24 (256 addresses)
- 205.234.231.0/24 (256 addresses)
- 205.234.233.0/24 (256 addresses)
- 216.246.15.0/24 (256 addresses)
- 216.246.30.0/24 (256 addresses)
- 216.246.122.0/24 (256 addresses)
IPv6 Prefixes (61 total)
- 2001:559:f0::/47
- 2001:559:8070::/47
- 2001:559:8094::/47
- 2001:559:875a::/47
- 2001:559:c0ac::/47
- 2001:559:c148::/47
- 2001:559:c17c::/47
- 2a03:2887:ff2c::/47
- 2001:559:4::/48
- 2001:559:20::/48
- 2001:559:b3::/48
- 2001:559:b4::/48
- 2001:559:184::/48
- 2001:559:29b::/48
- 2001:559:29e::/48
- 2001:559:2c2::/48
- 2001:559:2e0::/48
- 2001:559:336::/48
- 2001:559:36a::/48
- 2001:559:3e5::/48
- 2001:559:3f0::/48
- 2001:559:433::/48
- 2001:559:434::/48
- 2001:559:5aa::/48
- 2001:559:711::/48
- 2001:559:715::/48
- 2001:559:79a::/48
- 2001:559:7ea::/48
- 2001:559:812b::/48
- 2001:559:8164::/48
- 2001:559:8186::/48
- 2001:559:81fe::/48
- 2001:559:82ca::/48
- 2001:559:835d::/48
- 2001:559:8388::/48
- 2001:559:83f9::/48
- 2001:559:8498::/48
- 2001:559:84bd::/48
- 2001:559:8500::/48
- 2001:559:850f::/48
- 2001:559:868e::/48
- 2001:559:86b1::/48
- 2001:559:c019::/48
- 2001:559:c01a::/48
- 2001:559:c040::/48
- 2001:559:c0a9::/48
- 2001:559:c0ab::/48
- 2001:559:c153::/48
- 2001:559:c1c2::/48
- 2001:559:c2b9::/48