AS13367 — COMCAST-13367

AS13367 announces 110 IPv4 prefixes covering 1,005,056 addresses and 71 IPv6 prefixes.

About this network

A million addresses for one state, and one registry record has the company name typed twice.

What it's used for

• A large United States cable operator's regional network. 1,005,056 addresses across 110 IPv4 prefixes, seventy-one IPv6 prefixes, and seventy-nine observed BGP neighbours.

Notable

• Netnames run in three styles: CCCH-3-34 and CCCH3-10, a geographic series MINNESOTA-14, MINNESOTA-32, MINNESOTA-41, MINNESOTA-42, MINNESOTA-43, and JUMPSTART-5.
• One block's registrant reads Comcast Comcast Cable Communications, Inc..
• Others alternate between Inc. and LLC forms of the same name.
• Every sampled name is of the form c-75-72-128-0.hsd1.mn.comcast.net.
• Two prefixes' registry lookups failed, so nothing is known about their registration here.

Interesting

• The doubled company name is a paste that went in twice and was never noticed, sitting in the record for a block of sixty-five thousand addresses. Nobody reads these fields, which is exactly why the error survives.
• Two adjacent /17s share the netname MINNESOTA-32, so the registry sees one allocation where the routing table sees two announcements.
• Three netname styles are three eras of the same company: an internal cable handle, a state-by-state scheme adopted once the footprint got large enough to organise geographically, and a brand from an early high-speed service that outlived the marketing.
• Every reverse name carries the state code, so the geography is in DNS as well as in the netnames.

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

Announced prefixes

• 23.25.144.0/20
• 23.30.224.0/19
• 24.7.192.0/18
• 24.118.0.0/16
• 24.124.172.0/23
• 24.131.128.0/18
• 24.245.0.0/18
• 50.77.48.0/20
• 50.78.224.0/21
• 50.176.160.0/20
• 50.190.160.0/19
• 50.194.192.0/20
• 50.209.0.0/19
• 50.211.16.0/20
• 50.212.160.0/19
• 50.225.69.0/24
• 50.232.54.0/24
• 50.237.66.0/24
• 50.241.32.0/19
• 50.244.192.0/19
• 50.249.96.0/19
• 50.253.80.0/20
• 50.255.112.0/20
• 66.41.0.0/16
• 68.46.0.0/17
• 68.47.0.0/17
• 68.54.16.0/20
• 68.54.96.0/20
• 68.59.32.0/20
• 68.63.208.0/20
• 68.85.164.0/22
• 68.85.168.0/23
• 68.85.200.0/23
• 68.86.46.0/24
• 68.86.63.0/24
• 68.86.232.0/22
• 68.87.14.0/24
• 68.87.174.0/23
• 68.87.176.0/22
• 69.139.176.0/24
• 69.139.219.0/24
• 69.180.128.0/18
• 69.241.23.0/24
• 69.241.77.0/24
• 69.241.114.0/24
• 69.252.23.0/24
• 69.252.222.0/23
• 70.89.196.0/22
• 70.89.200.0/22
• 70.90.76.0/22
• 70.91.176.0/22
• 71.24.192.0/18
• 71.193.64.0/19
• 71.195.0.0/18
• 74.93.24.0/22
• 74.94.80.0/21
• 74.95.64.0/22
• 74.95.70.0/23
• 74.95.100.0/22
• 74.95.140.0/22
• 75.72.0.0/15
• 75.144.36.0/22
• 75.146.32.0/20
• 75.146.144.0/20
• 75.146.160.0/19
• 75.149.144.0/20
• 76.17.128.0/17
• 76.113.128.0/17
• 76.156.0.0/16
• 96.67.160.0/19
• 96.72.32.0/19
• 96.75.128.0/19
• 96.78.64.0/19
• 96.82.192.0/19
• 96.87.128.0/19
• 96.88.16.0/20
• 96.93.224.0/19
• 96.97.48.0/22
• 96.97.208.0/21
• 96.108.10.0/24
• 96.108.52.0/23
• 96.108.188.0/24
• 96.109.2.0/24
• 96.109.18.0/24
• 96.109.26.0/23
• 96.109.166.0/23
• 96.113.74.0/24
• 96.113.144.0/23
• 96.113.212.0/22
• 96.216.92.0/23
• 96.216.200.0/22
• 96.217.152.0/24
• 96.217.158.0/23
• 98.59.0.0/17
• 98.61.0.0/16
• 107.2.64.0/18
• 107.4.128.0/17
• 157.240.145.0/24
• 157.240.146.0/24
• 162.151.54.0/24

and 81 more.

Upstream networks

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

Downstream networks

• AS5774 United States Postal Service
• AS26638 Minneapolis Public Schools
• AS14895 Lawson Software
• AS54113 Fastly, Inc.
• AS32530 Opus Corporation
• AS23531 Sunrise Banks
• AS20125 Luther Seminary
• AS31772 Farm Credit Services of America
• AS54017 UCare Minnesota
• AS31929 Great River Energy
• AS401523 Auction Harmony
• AS7800 Allina Health System, Inc.
• AS19629 -Reserved AS-
• AS394714 Data Recognition Corporation
• AS35928 BECKMAN COULTER, INC.
• AS46973 Realogy Group LLC
• AS397650 Calix, Inc.
• AS62863 PRAIRIECARE LLC
• AS33692 Macalester College
• AS40391 CHS COOPERATIVES FOUNDATION
• AS13712 Saint Marys University of Minnesota
• AS31816 National Marrow Donor Program
• AS36040 Google LLC
• AS394498 YMCA of the North
• AS394621 Stack41, llc.

Adjacent networks

• AS7922 Comcast Cable Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS5774 United States Postal Service
• AS26638 Minneapolis Public Schools
• AS14895 Lawson Software
• AS54113 Fastly, Inc.
• AS32530 Opus Corporation
• AS23531 Sunrise Banks
• AS20125 Luther Seminary
• AS31772 Farm Credit Services of America
• AS54017 UCare Minnesota
• AS31929 Great River Energy
• AS401523 Auction Harmony
• AS7800 Allina Health System, Inc.
• AS19629 -Reserved AS-
• AS394714 Data Recognition Corporation
• AS35928 BECKMAN COULTER, INC.
• AS46973 Realogy Group LLC
• AS397650 Calix, Inc.
• AS13712 Saint Marys University of Minnesota
• AS40391 CHS COOPERATIVES FOUNDATION
• AS62863 PRAIRIECARE LLC
• AS33692 Macalester College
• AS31816 National Marrow Donor Program
• AS36040 Google LLC