AS33287 — COMCAST-33287

AS33287 announces 158 IPv4 prefixes covering 1,312,512 addresses and 288 IPv6 prefixes.

About this network

COMCAST-33287 is operated by Comcast Cable Communications, LLC.

What it's used for

• The address space carries residential and small business cable internet access, evidenced by reverse DNS entries like c-68-80-128-0.hsd1.pa.comcast.net and netnames such as PA-METRO-7, PA-CPE-33, and PHILADELPHIA-SMB-1.
• The AS announces 1,312,512 IPv4 addresses across 158 prefixes and 294 IPv6 prefixes, while maintaining 132 observed neighbours. This high address-to-neighbour ratio indicates a large-scale access network rather than a transit provider.

Notable

• Registrants for the largest prefixes are consistently Comcast Cable Communications, Inc. or Comcast Cable Communications, LLC, aligning with the AS holder.
• The inventory is dominated by large /15 and /16 blocks in the 68.0.0.0/8, 71.0.0.0/8, and 76.0.0.0/8 ranges, reflecting a substantial legacy cable footprint.
• The address inventory is finely subdivided into regional and service-specific blocks, such as PA-WEST-6 and PHILADELPHIA-CBC-33, supporting site-by-site segmentation for a major cable operator.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 23.24.0.0/18
• 24.75.216.0/22
• 24.104.156.0/24
• 24.124.232.0/21
• 31.132.55.0/24
• 45.58.210.0/24
• 50.73.192.0/19
• 50.77.16.0/21
• 50.77.80.0/20
• 50.78.128.0/20
• 50.79.104.0/21
• 50.148.139.0/24
• 50.148.165.0/24
• 50.189.128.0/18
• 50.196.32.0/19
• 50.199.64.0/19
• 50.200.97.0/24
• 50.201.99.0/24
• 50.202.31.0/24
• 50.202.142.0/24
• 50.202.176.0/24
• 50.203.190.0/24
• 50.206.77.0/24
• 50.206.85.0/24
• 50.206.163.0/24
• 50.207.65.0/24
• 50.216.135.0/24
• 50.216.138.0/24
• 50.218.90.0/24
• 50.222.119.0/24
• 50.225.8.0/24
• 50.225.65.0/24
• 50.225.139.0/24
• 50.227.176.0/24
• 50.229.207.0/24
• 50.232.31.0/24
• 50.232.103.0/24
• 50.243.32.0/19
• 50.246.160.0/19
• 50.251.32.0/19
• 50.254.160.0/19
• 64.52.28.0/22
• 66.208.240.0/22
• 66.208.246.0/23
• 67.165.0.0/19
• 68.80.0.0/15
• 68.82.0.0/16
• 68.83.128.0/18
• 68.83.224.0/19
• 68.84.32.0/19
• 68.84.64.0/20
• 68.84.96.0/19
• 68.84.208.0/20
• 68.85.6.0/24
• 68.85.34.0/24
• 68.85.78.0/23
• 68.85.152.0/23
• 68.85.158.0/23
• 68.85.192.0/22
• 68.86.2.0/23
• 68.86.4.0/23
• 68.86.153.0/24
• 68.86.156.0/24
• 68.86.159.0/24
• 68.86.193.0/24
• 68.86.208.0/24
• 68.86.211.0/24
• 68.86.213.0/24
• 68.86.214.0/24
• 68.86.216.0/22
• 68.87.215.0/24
• 69.91.183.0/24
• 69.136.64.0/19
• 69.136.208.0/20
• 69.137.128.0/20
• 69.139.0.0/19
• 69.139.64.0/19
• 69.139.192.0/23
• 69.241.64.0/24
• 69.241.66.0/23
• 69.242.0.0/17
• 69.249.0.0/16
• 69.252.50.0/24
• 69.252.118.0/24
• 69.252.208.0/23
• 69.252.250.0/23
• 69.253.0.0/16
• 70.89.16.0/20
• 70.89.48.0/20
• 70.89.204.0/22
• 70.91.0.0/18
• 71.25.96.0/19
• 71.27.0.0/18
• 71.58.0.0/19
• 71.203.112.0/20
• 71.224.0.0/15
• 71.230.0.0/16
• 74.92.240.0/22
• 74.93.121.0/24
• 74.93.122.0/23

and 346 more.

Upstream networks

• AS7922 Comcast Cable Communications, LLC
• AS3356 Level 3 Parent, LLC

Downstream networks

• AS397380 Temple University Health System, Inc.
• AS16958 Bucks County Intermediate Unit #22
• AS14539 Vantage Labs LLC
• AS46807 GLOUC-NJ
• AS15243 Widener University
• AS19576 Eastern University
• AS26881 IPR International, LLC.
• AS395503 ComTec Cloud
• AS33261 Power Home Remodeling LLC
• AS19826 UNIVERSAL HEALTH SERVICES
• AS11826 Regional Information Sharing Systems
• AS22641 Novo Nordisk Pharmaceutical, Inc.
• AS4985 PHILADELPHIA GAS WORKS
• AS40177 The Institutes
• AS26764 The Robert Wood Johnson Foundation
• AS11205 City of Philadelphia
• AS46274 Penn Medicine
• AS397986 Pennsylvania Convention Center Authority
• AS34 University of Delaware
• AS53291 WSFS Bank
• AS30330 Automotive Rentals, Inc.
• AS21669 New Jersey State Library
• AS54986 1-800-Flowers.com, Inc.
• AS17035 NBCUniversal
• AS40471 Incyte Corporation

Adjacent networks

• AS7922 Comcast Cable Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS397380 Temple University Health System, Inc.
• AS16958 Bucks County Intermediate Unit #22
• AS14539 Vantage Labs LLC
• AS46807 GLOUC-NJ
• AS36253 Delaware County Intermediate Unit
• AS15243 Widener University
• AS26881 IPR International, LLC.
• AS19576 Eastern University
• AS395503 ComTec Cloud
• AS34 University of Delaware
• AS33261 Power Home Remodeling LLC
• AS19826 UNIVERSAL HEALTH SERVICES
• AS22641 Novo Nordisk Pharmaceutical, Inc.
• AS11826 Regional Information Sharing Systems
• AS4985 PHILADELPHIA GAS WORKS
• AS40177 The Institutes
• AS26764 The Robert Wood Johnson Foundation
• AS11205 City of Philadelphia
• AS46274 Penn Medicine
• AS397986 Pennsylvania Convention Center Authority
• AS53291 WSFS Bank
• AS30330 Automotive Rentals, Inc.
• AS21669 New Jersey State Library