AS33654 — CMCS
AS33654 announces 64 IPv4 prefixes covering 337,920 addresses and 22 IPv6 prefixes.
About this network
The AS handle CMCS is held by Comcast Cable Communications, LLC.
What it's used for
- The space carries residential cable internet and VoIP services, evidenced by reverse DNS entries like c-98-60-127-255.hsd1.nm.comcast.net and netnames such as COMCAST-VOIP-4.
- With 337,920 IPv4 addresses announced across 64 prefixes and only 14 observed neighbours, the high address-to-neighbour ratio indicates a large access/eyeball network rather than a transit provider.
Notable
- Registrants are consistent with the announcer, appearing as either Comcast Cable Communications, LLC or Comcast Cable Communications, Inc.
- The address inventory is heavily concentrated in the Albuquerque region, as indicated by netnames like ALBUQUERQUE-24, ALBUQUERQUE-14, and ALBUQUERQUE-17.
- The inventory includes a mix of /16, /17, and /18 blocks, with the largest being 98.60.0.0/16.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 23.31.112.0/21
- 50.77.40.0/22
- 50.78.208.0/22
- 50.79.220.0/22
- 50.176.112.0/21
- 50.188.160.0/20
- 50.193.232.0/21
- 50.213.128.0/21
- 50.240.8.0/21
- 50.243.16.0/20
- 50.251.8.0/21
- 67.164.128.0/19
- 68.84.144.0/20
- 68.85.65.0/24
- 68.85.224.0/24
- 68.86.32.0/24
- 68.86.182.0/23
- 69.241.36.0/24
- 69.247.64.0/20
- 69.254.128.0/19
- 70.88.160.0/22
- 70.90.200.0/21
- 70.90.208.0/22
- 71.25.80.0/20
- 71.228.96.0/19
- 74.92.204.0/22
- 74.95.16.0/22
- 75.146.140.0/22
- 75.150.16.0/22
- 76.18.64.0/19
- 76.26.96.0/20
- 76.113.0.0/17
- 76.127.0.0/18
- 96.64.144.0/20
- 96.72.0.0/20
- 96.77.16.0/20
- 96.84.156.0/22
- 96.88.0.0/21
- 96.92.64.0/20
- 96.96.92.0/24
- 96.96.199.0/24
- 96.97.44.0/23
- 96.97.160.0/23
- 96.108.43.0/24
- 96.108.67.0/24
- 96.109.19.0/24
- 96.109.124.0/24
- 96.110.19.0/24
- 96.113.75.0/24
- 96.216.21.0/24
- 96.216.96.0/23
- 96.216.145.0/24
- 98.32.0.0/18
- 98.48.0.0/17
- 98.60.0.0/16
- 162.151.97.0/24
- 162.151.187.0/24
- 173.10.240.0/21
- 173.12.200.0/21
- 173.163.240.0/21
- 174.50.64.0/19
- 174.56.0.0/17
- 174.62.0.0/18
- 184.115.144.0/20
- 2001:558:40::/44
- 2001:558:a008::/48
- 2001:558:fe18::/48
- 2001:559:ba::/47
- 2001:559:12b::/48
- 2001:559:24d::/48
- 2001:559:38f::/48
- 2001:559:3cf::/48
- 2001:559:7d7::/48
- 2001:559:8165::/48
- 2001:559:8208::/48
- 2001:559:8465::/48
- 2001:559:87cd::/48
- 2001:559:87ce::/48
- 2001:559:c151::/48
- 2001:559:c517::/48
- 2001:559:c553::/48
- 2001:559:c555::/48
- 2601:8c0::/26
- 2603:2000::/26
- 2603:3000::/32
- 2603:308b::/32
Upstream networks
- AS7922 Comcast Cable Communications, LLC
Downstream networks
- AS394037 RIO CITIES
- AS54113 Fastly, Inc.
- AS62621 SUMMITELEC
- AS400445 NUSENDA FEDERAL CREDIT UNION
- AS401002 Bridgers & Paxton Consulting Engineers, Inc.
- AS30331 St. Vincent Hospital
- AS394997 Nexum, Inc.
- AS397167 Presbyterian Healthcare Services
- AS3388 University of New Mexico
- AS31883 Thornburg Investment Management Inc.
- AS11710 ABBA TECHNOLOGIES
- AS46808 Pueblo of Santa Ana
- AS31948 Santa Ana Star Casino Hotel
Adjacent networks
- AS7922 Comcast Cable Communications, LLC
- AS394037 RIO CITIES
- AS54113 Fastly, Inc.
- AS62621 SUMMITELEC
- AS400445 NUSENDA FEDERAL CREDIT UNION
- AS401002 Bridgers & Paxton Consulting Engineers, Inc.
- AS30331 St. Vincent Hospital
- AS394997 Nexum, Inc.
- AS397167 Presbyterian Healthcare Services
- AS3388 University of New Mexico
- AS31883 Thornburg Investment Management Inc.
- AS11710 ABBA TECHNOLOGIES
- AS46808 Pueblo of Santa Ana
- AS31948 Santa Ana Star Casino Hotel
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IPv4
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Search Results
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