Country
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ASN LANDING PAGE
AS33657
CMCS - Comcast Cable Communications, LLC
Last updated · Jul 20, 2026
Total prefixes
273
IPv4 prefixes
28
IPv6 prefixes
245
ASN summary
How to read the scale of AS33657
CMCS - Comcast Cable Communications, LLC currently reports 273 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 AS33657 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
AS33657 ASN lookupAS33657 BGPAS33657 peersAS33657 prefixesAS33657 upstreamsCMCS - Comcast Cable Communications, LLC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS11790
AS11790
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AS400902
AS400902
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AS53350
AS53350
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AS394077
AS394077
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AS17190
AS17190
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AS26522
AS26522
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AS16881
AS16881
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AS26868
AS26868
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AS10918
AS10918
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AS27016
AS27016
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AS32291
AS32291
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AS18733
AS18733
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AS11951
AS11951
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AS572
AS572
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AS19936
AS19936
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AS2703
AS2703
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AS36040
AS36040
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AS40410
AS40410
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AS398820
AS398820
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AS13511
AS13511
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AS32073
AS32073
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AS36457
AS36457
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AS16463
AS16463
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AS22962
AS22962
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AS3705
AS3705
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AS4880
AS4880
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AS15134
AS15134
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AS22694
AS22694
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AS25716
AS25716
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AS29865
AS29865
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AS30385
AS30385
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AS33738
AS33738
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AS40857
AS40857
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AS40954
AS40954
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AS46187
AS46187
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AS46200
AS46200
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AS46784
AS46784
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AS53373
AS53373
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AS397487
AS397487
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AS19316
AS19316
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 107.1.101.0/24 | AS33657 | — |
| 192.110.220.0/23 | AS33657 | — |
| 192.189.235.0/24 | AS33657 | — |
| 199.249.199.0/24 | AS33657 | — |
| 2001:559:110::/48 | AS33657 | — |
| 2001:559:136::/48 | AS33657 | — |
| 2001:559:16a::/48 | AS33657 | — |
| 2001:559:1da::/48 | AS33657 | — |
| 2001:559:1f8::/48 | AS33657 | — |
| 2001:559:202::/48 | AS33657 | — |
| 2001:559:214::/48 | AS33657 | — |
| 2001:559:246::/48 | AS33657 | — |
| 2001:559:25a::/48 | AS33657 | — |
| 2001:559:25b::/48 | AS33657 | — |
| 2001:559:282::/48 | AS33657 | — |
| 2001:559:284::/48 | AS33657 | — |
| 2001:559:288::/48 | AS33657 | — |
| 2001:559:2b6::/48 | AS33657 | — |
| 2001:559:2ca::/48 | AS33657 | — |
| 2001:559:2cb::/48 | AS33657 | — |
| 2001:559:2f3::/48 | AS33657 | — |
| 2001:559:300::/48 | AS33657 | — |
| 2001:559:304::/48 | AS33657 | — |
| 2001:559:30d::/48 | AS33657 | — |
| 2001:559:319::/48 | AS33657 | — |
| 2001:559:377::/48 | AS33657 | — |
| 2001:559:380::/48 | AS33657 | — |
| 2001:559:3ba::/48 | AS33657 | — |
| 2001:559:3ca::/48 | AS33657 | — |
| 2001:559:3d2::/48 | AS33657 | — |
| 2001:559:3dc::/48 | AS33657 | — |
| 2001:559:3eb::/48 | AS33657 | — |
| 2001:559:3f1::/48 | AS33657 | — |
| 2001:559:42c::/48 | AS33657 | — |
| 2001:559:43a::/48 | AS33657 | — |
| 2001:559:45a::/48 | AS33657 | — |
| 2001:559:46c::/48 | AS33657 | — |
| 2001:559:488::/48 | AS33657 | — |
| 2001:559:489::/48 | AS33657 | — |
| 2001:559:48::/48 | AS33657 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS33657 represent?
AS33657 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 AS33657 page?
They help explain the scale, interconnection depth, and route structure of AS33657. 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 AS33657?
Open a concrete IP page to check how the address maps into AS33657, 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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