$ query “AS33491” --type=asn → 1 result(s)
AS33491 — COMCAST-33491
Comcast Cable Communications LLC
AS33491 is a major transit provider registered to Comcast Cable Communications LLC, based in the United States since 2004. The network announces a respectable 66 304 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)
- 89 / 88
- IPv6 Prefixes (raw / aggregated)
- 220 / 195
- IPv4 Addresses
- 66 304
- Largest IPv4 Prefix
- /18 (16 384 addresses)
- Largest IPv6 Prefix
- /45
- Geolocated Countries
- 🇺🇸 US (88 IPs), 🇦🇺 AU (2 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 66 304 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 251 downstream autonomous systems buying transit
- Degree
- 257 unique BGP neighbors (providers + customers + peers)
- Reach
- 289 — customer cone size measuring network influence
- Degree Rank
- #499
- Reach Rank
- #758
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (89 total)
- 164.68.0.0/18 (16 384 addresses)
- 209.153.0.0/18 (16 384 addresses)
- 164.68.64.0/19 (8 192 addresses)
- 50.220.4.0/22 (1 024 addresses)
- 50.229.76.0/22 (1 024 addresses)
- 50.205.54.0/23 (512 addresses)
- 50.220.130.0/23 (512 addresses)
- 50.224.140.0/23 (512 addresses)
- 107.0.96.0/23 (512 addresses)
- 107.0.182.0/23 (512 addresses)
- 107.1.102.0/23 (512 addresses)
- 199.5.60.0/23 (512 addresses)
- 205.167.202.0/23 (512 addresses)
- 23.177.32.0/24 (256 addresses)
- 24.104.47.0/24 (256 addresses)
- 50.201.119.0/24 (256 addresses)
- 50.201.191.0/24 (256 addresses)
- 50.202.73.0/24 (256 addresses)
- 50.203.174.0/24 (256 addresses)
- 50.203.242.0/24 (256 addresses)
- 50.204.23.0/24 (256 addresses)
- 50.204.91.0/24 (256 addresses)
- 50.204.189.0/24 (256 addresses)
- 50.205.166.0/24 (256 addresses)
- 50.206.250.0/24 (256 addresses)
- 50.207.195.0/24 (256 addresses)
- 50.207.233.0/24 (256 addresses)
- 50.216.36.0/24 (256 addresses)
- 50.216.227.0/24 (256 addresses)
- 50.217.237.0/24 (256 addresses)
- 50.218.78.0/24 (256 addresses)
- 50.219.59.0/24 (256 addresses)
- 50.219.60.0/24 (256 addresses)
- 50.220.44.0/24 (256 addresses)
- 50.220.116.0/24 (256 addresses)
- 50.220.188.0/24 (256 addresses)
- 50.224.45.0/24 (256 addresses)
- 50.224.194.0/24 (256 addresses)
- 50.225.88.0/24 (256 addresses)
- 50.227.239.0/24 (256 addresses)
- 50.228.97.0/24 (256 addresses)
- 50.230.91.0/24 (256 addresses)
- 50.230.112.0/24 (256 addresses)
- 50.231.36.0/24 (256 addresses)
- 50.231.52.0/24 (256 addresses)
- 50.231.119.0/24 (256 addresses)
- 50.231.218.0/24 (256 addresses)
- 50.231.221.0/24 (256 addresses)
- 50.232.93.0/24 (256 addresses)
- 50.232.95.0/24 (256 addresses)
IPv6 Prefixes (220 total)
- 2001:559:228::/45
- 2001:559:c19c::/46
- 2001:559:7e::/47
- 2001:559:b0::/47
- 2001:559:222::/47
- 2001:559:224::/47
- 2001:559:230::/47
- 2001:559:308::/47
- 2001:559:4fa::/47
- 2001:559:766::/47
- 2001:559:8050::/47
- 2001:559:85b6::/47
- 2001:559:8648::/47
- 2001:559:c028::/47
- 2001:559:c080::/47
- 2001:559:c28c::/47
- 2001:559:c4e4::/47
- 2001:559:26::/48
- 2001:559:2f::/48
- 2001:559:35::/48
- 2001:559:49::/48
- 2001:559:bd::/48
- 2001:559:be::/48
- 2001:559:c9::/48
- 2001:559:ca::/48
- 2001:559:12d::/48
- 2001:559:134::/48
- 2001:559:146::/48
- 2001:559:148::/48
- 2001:559:157::/48
- 2001:559:15d::/48
- 2001:559:1d6::/48
- 2001:559:1e3::/48
- 2001:559:1e5::/48
- 2001:559:1fc::/48
- 2001:559:1ff::/48
- 2001:559:204::/48
- 2001:559:221::/48
- 2001:559:226::/48
- 2001:559:24b::/48
- 2001:559:24c::/48
- 2001:559:27b::/48
- 2001:559:2a5::/48
- 2001:559:2a9::/48
- 2001:559:2d1::/48
- 2001:559:2e3::/48
- 2001:559:2ff::/48
- 2001:559:303::/48
- 2001:559:311::/48
- 2001:559:314::/48