Country
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ASN LANDING PAGE
AS33657
CMCS - Comcast Cable Communications, LLC
Last updated · Apr 10, 2026
Total prefixes
274
IPv4 prefixes
30
IPv6 prefixes
244
ASN summary
How to read the scale of AS33657
CMCS - Comcast Cable Communications, LLC currently shows 274 prefixes and 42 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS33657?
CMCS - Comcast Cable Communications, LLC is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS33657 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS33657 ASN lookupAS33657 BGPAS33657 peersAS33657 prefixesAS33657 upstreamsCMCS - Comcast Cable Communications, LLC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS26522
AS26522
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AS11790
AS11790
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AS400902
AS400902
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AS53350
AS53350
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AS17190
AS17190
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AS394077
AS394077
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AS16881
AS16881
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AS26868
AS26868
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AS32291
AS32291
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AS10918
AS10918
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AS18733
AS18733
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AS11951
AS11951
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AS36040
AS36040
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AS572
AS572
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AS2703
AS2703
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AS19936
AS19936
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AS32073
AS32073
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AS36457
AS36457
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AS29865
AS29865
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AS398820
AS398820
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AS16463
AS16463
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AS22694
AS22694
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AS40410
AS40410
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AS397487
AS397487
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AS19316
AS19316
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AS27336
AS27336
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AS30385
AS30385
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AS33738
AS33738
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AS22101
AS22101
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AS33506
AS33506
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AS14899
AS14899
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AS22962
AS22962
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AS25716
AS25716
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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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AS53373
AS53373
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AS62957
AS62957
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AS393319
AS393319
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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 | — |
| 2001:559:202::/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 | — |
| 2001:559:304::/48 | AS33657 | — |
| 2001:559:30d::/48 | AS33657 | — |
| 2001:559:319::/48 | AS33657 | — |
| 2001:559:377::/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 | — |
| 2001:559:491::/48 | AS33657 | — |
| 2001:559:4a0::/48 | AS33657 | — |
| 2001:559:4a5::/48 | AS33657 | — |
| 2001:559:4a8::/48 | AS33657 | — |
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Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS33657 represent?
AS33657 is an autonomous system number used to identify an independently operated network. The current page associates it with CMCS - Comcast Cable Communications, LLC in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
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?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS33657, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.