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AS33665
AS33665 Comcast Cable Communications, LLC
CMCS - Comcast Cable Communications, LLC · registered in the United States
IPv4 addresses 112,128 46 prefixes · 0.004% of announced IPv4
Rank in United States #598 largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide #1,774 of 79,396 networks with IPv4
IPv6 130 x /32 (8,519,699 x /48) 8 prefixes
IPv4 prefixes
All 46 prefixes, in address order.
23.31.120.0/22 50.76.144.0/22 50.184.160.0/22 50.193.240.0/22 50.244.88.0/22 50.251.20.0/22 64.139.67.0/24 64.139.91.0/24 66.208.206.0/23 67.173.192.0/19 68.85.60.0/24 68.85.122.0/24 68.86.138.0/23 68.86.202.0/23 69.252.37.0/24 69.254.0.0/20 70.88.28.0/23 70.91.181.0/24 70.91.211.0/24 71.25.192.0/22 71.203.64.0/20 71.226.0.0/20 71.226.128.0/19 74.92.254.0/24 74.94.89.0/24 74.95.107.0/24 75.146.95.0/24 76.125.16.0/20 76.140.192.0/18 96.67.64.0/22 96.69.236.0/22 96.73.32.0/22 96.84.152.0/22 96.88.8.0/22 96.94.172.0/22 96.96.99.0/24 96.96.207.0/24 96.114.54.0/23 96.208.27.0/24 173.10.199.0/24 173.163.224.0/22 174.50.96.0/19 174.56.192.0/18 174.63.192.0/18 184.117.160.0/22 184.118.2.0/24
IPv6 prefixes
All 8 prefixes.
2001:558:360::/44 2001:558:fe3c::/48 2001:559:8281::/48 2001:559:868b::/48 2601:100::/26 2603:2100::/26 2603:3002::/32 2603:308d::/32
Other ASNs named Comcast Cable Communications, LLC
37 other networks use the same organisation name; together with AS33665 they announce 68,427,008 IPv4 addresses. Largest 30 shown.
ASN Name IPv4 addresses
AS7922 COMCAST-7922 - Comcast Cable Communications, LLC US 42,195,200 AS33491 COMCAST-33491 - Comcast Cable Communications, LLC US 3,142,144 AS33651 CMCS - Comcast Cable Communications, LLC US 2,267,136 AS33668 CMCS - Comcast Cable Communications, LLC US 1,857,536 AS33652 CMCS - Comcast Cable Communications, LLC US 1,759,744 AS20214 COMCAST-20214 - Comcast Cable Communications, LLC US 1,720,832 AS7016 CCCH-3 - Comcast Cable Communications, LLC US 1,577,984 AS33657 CMCS - Comcast Cable Communications, LLC US 1,553,408 AS7725 COMCAST-7725 - Comcast Cable Communications, LLC US 1,466,624 AS33287 COMCAST-33287 - Comcast Cable Communications, LLC US 1,312,512 AS33659 CMCS - Comcast Cable Communications, LLC US 1,147,136 AS22909 COMCAST-22909 - Comcast Cable Communications, LLC US 1,075,968 AS13367 COMCAST-13367 - Comcast Cable Communications, LLC US 1,005,056 AS33667 CMCS - Comcast Cable Communications, LLC US 999,936 AS33490 COMCAST-33490 - Comcast Cable Communications, LLC US 852,480 AS21508 COMCAST-21508 - Comcast Cable Communications, LLC US 689,408 AS22258 COMCAST-22258 - Comcast Cable Communications, LLC US 664,064 AS33489 COMCAST-33489 - Comcast Cable Communications, LLC US 647,936 AS33661 CMCS - Comcast Cable Communications, LLC US 630,528 AS33660 CMCS - Comcast Cable Communications, LLC US 621,824 AS33654 CMCS - Comcast Cable Communications, LLC US 337,920 AS33666 CMCS - Comcast Cable Communications, LLC US 247,296 AS33656 CMCS - Comcast Cable Communications, LLC US 165,632 AS33653 CMCS - Comcast Cable Communications, LLC US 146,944 AS33655 CMCS - Comcast Cable Communications, LLC US 89,600 AS36733 DNEO-OSP7 - Comcast Cable Communications, LLC US 58,880 AS7015 COMCAST-7015 - Comcast Cable Communications, LLC US 46,080 AS36732 COMCAST-36732 - Comcast Cable Communications, LLC US 24,064 AS33662 CMCS - Comcast Cable Communications, LLC US 3,840 AS33650 COMCAST-33650 - Comcast Cable Communications, LLC US 3,584
Similar-sized networks in United States
ASN Name IPv4 addresses
AS984 #595 OWS-NETWORK - OCTOPUS WEB SOLUTION INC113,920 AS2648 #597 NOAA-BOULDER - National Oceanic and Atmospheric Administration112,384 AS47007 #599 AS4-COLOAM - Colocation America Corporation111,872 AS14492 #600 DATAPIPE - DataPipe, Inc.111,360 AS213541 #601 ws-telecom-sdn WS Telecom Inc111,104
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources