Country
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ASN LANDING PAGE
AS33651
CMCS - Comcast Cable Communications, LLC
Last updated · Jul 20, 2026
Total prefixes
291
IPv4 prefixes
95
IPv6 prefixes
196
ASN summary
How to read the scale of AS33651
CMCS - Comcast Cable Communications, LLC currently reports 291 prefixes and 42 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
CMCS - Comcast Cable Communications, LLC is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS33651 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
AS33651 ASN lookupAS33651 BGPAS33651 peersAS33651 prefixesAS33651 upstreamsCMCS - Comcast Cable Communications, LLC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS1226
AS1226
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AS55064
AS55064
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AS6099
AS6099
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AS32537
AS32537
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AS20066
AS20066
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AS395011
AS395011
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AS10309
AS10309
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AS395976
AS395976
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AS36040
AS36040
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AS63435
AS63435
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AS23472
AS23472
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AS46864
AS46864
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AS17117
AS17117
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AS14388
AS14388
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AS46305
AS46305
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AS53985
AS53985
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AS393305
AS393305
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AS395132
AS395132
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AS397030
AS397030
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AS26758
AS26758
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AS40039
AS40039
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AS22369
AS22369
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AS36776
AS36776
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AS17035
AS17035
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AS26325
AS26325
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AS54113
AS54113
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AS5081
AS5081
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AS32504
AS32504
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AS19126
AS19126
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AS397258
AS397258
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AS23154
AS23154
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AS29878
AS29878
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AS18880
AS18880
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AS54201
AS54201
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AS10982
AS10982
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AS35928
AS35928
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AS16920
AS16920
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AS55059
AS55059
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AS62508
AS62508
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AS5098
AS5098
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 103.111.63.0/24 | AS33651 | — |
| 103.216.197.0/24 | AS33651 | — |
| 107.0.21.0/24 | AS33651 | — |
| 135.132.64.0/19 | AS33651 | — |
| 135.132.72.0/22 | AS33651 | — |
| 135.132.76.0/22 | AS33651 | — |
| 138.226.112.0/21 | AS33651 | — |
| 138.226.192.0/21 | AS33651 | — |
| 138.226.196.0/22 | AS33651 | — |
| 138.226.48.0/21 | AS33651 | — |
| 138.226.64.0/20 | AS33651 | — |
| 139.181.26.0/24 | AS33651 | — |
| 140.89.64.0/18 | AS33651 | — |
| 162.218.89.0/24 | AS33651 | — |
| 169.128.104.0/22 | AS33651 | — |
| 169.128.124.0/24 | AS33651 | — |
| 169.128.125.0/24 | AS33651 | — |
| 169.128.126.0/24 | AS33651 | — |
| 169.128.127.0/24 | AS33651 | — |
| 169.128.204.0/24 | AS33651 | — |
| 169.128.205.0/24 | AS33651 | — |
| 169.128.206.0/24 | AS33651 | — |
| 169.128.207.0/24 | AS33651 | — |
| 169.128.228.0/22 | AS33651 | — |
| 169.128.80.0/22 | AS33651 | — |
| 169.230.76.0/24 | AS33651 | — |
| 169.230.77.0/24 | AS33651 | — |
| 185.201.41.0/24 | AS33651 | — |
| 185.201.43.0/24 | AS33651 | — |
| 185.22.43.0/24 | AS33651 | — |
| 192.189.161.0/24 | AS33651 | — |
| 192.206.19.0/24 | AS33651 | — |
| 192.70.238.0/24 | AS33651 | — |
| 198.145.106.0/24 | AS33651 | — |
| 198.202.219.0/24 | AS33651 | — |
| 2001:559:104::/48 | AS33651 | — |
| 2001:559:106::/48 | AS33651 | — |
| 2001:559:17e::/48 | AS33651 | — |
| 2001:559:197::/48 | AS33651 | — |
| 2001:559:1c0::/48 | AS33651 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS33651 represent?
AS33651 is an autonomous system number. The current source associates it with CMCS - Comcast Cable Communications, LLC and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
What are peers, upstreams, and prefixes useful for on the AS33651 page?
They help explain the scale, interconnection depth, and route structure of AS33651. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS33651?
Open a concrete IP page to check how the address maps into AS33651, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
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