AS33491 — COMCAST-33491
AS33491 announces 324 IPv4 prefixes covering 3,142,144 addresses and 200 IPv6 prefixes.
About this network
The AS handle COMCAST-33491 is held by Comcast Cable Communications, LLC.
What it's used for
- The address space carries residential customer premises equipment, evidenced by netnames like CHICAGO-CPE-1 and INDIANA-CPE-11, and reverse DNS records such as c-24-13-0-0.hsd1.il.comcast.net.
- With 3,142,400 IPv4 addresses announced across 325 prefixes and 257 observed neighbours, the high address-to-neighbour ratio indicates a large-scale access network rather than a transit provider.
Notable
- Registrants consistently identify as Comcast Cable Communications, LLC or its historical variants, aligning with the announcer.
- The address inventory is finely subdivided into hundreds of /16 and /17 blocks, reflecting site-by-site segmentation for a major US cable operator.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 23.25.0.0/18
- 24.1.0.0/16
- 24.12.0.0/14
- 24.104.47.0/24
- 24.153.88.0/23
- 50.73.96.0/19
- 50.76.64.0/19
- 50.76.240.0/20
- 50.77.128.0/18
- 50.79.16.0/20
- 50.79.48.0/20
- 50.79.112.0/20
- 50.79.192.0/20
- 50.184.192.0/19
- 50.193.64.0/18
- 50.194.64.0/18
- 50.195.128.0/17
- 50.196.192.0/18
- 50.198.0.0/18
- 50.201.119.0/24
- 50.201.191.0/24
- 50.202.73.0/24
- 50.203.174.0/24
- 50.203.242.0/24
- 50.204.23.0/24
- 50.204.189.0/24
- 50.205.54.0/23
- 50.205.166.0/24
- 50.206.250.0/24
- 50.207.233.0/24
- 50.212.128.0/19
- 50.214.96.0/19
- 50.216.36.0/24
- 50.216.227.0/24
- 50.217.237.0/24
- 50.218.78.0/24
- 50.219.59.0/24
- 50.219.60.0/24
- 50.220.4.0/22
- 50.220.44.0/24
- 50.220.116.0/24
- 50.220.130.0/23
- 50.220.188.0/24
- 50.224.45.0/24
- 50.224.140.0/23
- 50.224.194.0/24
- 50.225.88.0/24
- 50.227.239.0/24
- 50.228.97.0/24
- 50.229.76.0/22
- 50.230.91.0/24
- 50.231.36.0/24
- 50.231.52.0/24
- 50.231.119.0/24
- 50.231.218.0/24
- 50.231.221.0/24
- 50.232.93.0/24
- 50.232.95.0/24
- 50.232.142.0/24
- 50.232.176.0/24
- 50.232.195.0/24
- 50.233.216.0/24
- 50.233.247.0/24
- 50.234.21.0/24
- 50.234.141.0/24
- 50.235.155.0/24
- 50.237.12.0/24
- 50.237.39.0/24
- 50.237.111.0/24
- 50.237.112.0/24
- 50.238.81.0/24
- 50.239.160.0/24
- 50.240.128.0/18
- 50.244.0.0/18
- 50.247.128.0/18
- 50.248.114.0/23
- 50.249.192.0/18
- 50.251.4.0/22
- 50.251.24.0/21
- 50.252.96.0/19
- 50.252.180.0/23
- 50.253.192.0/20
- 50.254.0.0/18
- 50.255.208.0/20
- 66.208.194.0/24
- 66.240.58.0/24
- 67.162.0.0/17
- 67.163.0.0/18
- 67.165.128.0/18
- 67.167.0.0/17
- 67.167.192.0/18
- 67.173.0.0/17
- 67.173.128.0/18
- 67.175.0.0/16
- 67.176.128.0/17
- 67.184.0.0/16
- 67.186.64.0/18
- 68.38.0.0/15
- 68.44.0.0/15
- 68.46.208.0/20
and 424 more.
Upstream networks
Downstream networks
- AS14858 Hanson Information Systems, Inc. / Family Net
- AS36373 Community Hospitals, Indianapolis
- AS14414 Telit IoT Platforms, LLC
- AS13950 DLS Internet Services, Inc
- AS36319 NorthShore University HealthSystem
- AS27482 American Eagle Computer Products, Inc.
- AS33248 City of Evanston, Illinois
- AS26912 Northwest Community Hospital
- AS40038 Moraine Valley Community College
- AS19265 Memorial Medical Center
- AS32143 The Village of Niles
- AS396021 Comcast Cable Communications, LLC
- AS26840 Advanced Business Group, LLC
- AS4917 AMDOCS Inc.
- AS40628 Oklahoma Office of Management & Enterprise Services
- AS395490 County of Lake
- AS29817 LAKE CITY BANK
- AS19855 Masergy Communications, Inc.
- AS54583 American College of Surgeons
- AS396995 Morris Hospital
- AS55037 Busey Bank
- AS7968 Loyola University Chicago
- AS54971 Brown Technologies, LLC
- AS10425 -Reserved AS-
- AS54056 Packaging Corporation of America
Adjacent networks
- AS7922 Comcast Cable Communications, LLC
- AS3356 Level 3 Parent, LLC
- AS14858 Hanson Information Systems, Inc. / Family Net
- AS36373 Community Hospitals, Indianapolis
- AS13950 DLS Internet Services, Inc
- AS14414 Telit IoT Platforms, LLC
- AS36319 NorthShore University HealthSystem
- AS27482 American Eagle Computer Products, Inc.
- AS33248 City of Evanston, Illinois
- AS26912 Northwest Community Hospital
- AS40038 Moraine Valley Community College
- AS19265 Memorial Medical Center
- AS32143 The Village of Niles
- AS396021 Comcast Cable Communications, LLC
- AS26840 Advanced Business Group, LLC
- AS4917 AMDOCS Inc.
- AS40628 Oklahoma Office of Management & Enterprise Services
- AS395490 County of Lake
- AS29817 LAKE CITY BANK
- AS19855 Masergy Communications, Inc.
- AS54583 American College of Surgeons
- AS396995 Morris Hospital
- AS55037 Busey Bank
- AS7968 Loyola University Chicago
- AS10425 -Reserved AS-
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IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED