Country
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ASN LANDING PAGE
AS33667
CMCS - Comcast Cable Communications, LLC
Last updated · Apr 10, 2026
Total prefixes
113
IPv4 prefixes
52
IPv6 prefixes
61
ASN summary
How to read the scale of AS33667
CMCS - Comcast Cable Communications, LLC currently shows 113 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 AS33667?
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 AS33667 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
AS33667 ASN lookupAS33667 BGPAS33667 peersAS33667 prefixesAS33667 upstreamsCMCS - Comcast Cable Communications, LLC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS13335
AS13335
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AS23338
AS23338
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AS32688
AS32688
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AS20940
AS20940
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AS397062
AS397062
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AS27580
AS27580
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AS17381
AS17381
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AS398204
AS398204
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AS11620
AS11620
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AS22617
AS22617
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AS11829
AS11829
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AS22768
AS22768
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AS36040
AS36040
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AS53782
AS53782
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AS2894
AS2894
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AS46867
AS46867
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AS46341
AS46341
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AS14443
AS14443
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AS23411
AS23411
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AS399761
AS399761
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AS397813
AS397813
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AS21954
AS21954
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AS395536
AS395536
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AS25753
AS25753
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AS394377
AS394377
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AS13511
AS13511
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AS18841
AS18841
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AS398572
AS398572
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AS27009
AS27009
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AS55032
AS55032
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AS397909
AS397909
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AS32537
AS32537
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AS13395
AS13395
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AS397787
AS397787
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AS5081
AS5081
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AS32504
AS32504
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AS32928
AS32928
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AS11574
AS11574
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AS4182
AS4182
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AS20383
AS20383
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 103.111.63.0/24 | AS33667 | — |
| 103.216.197.0/24 | AS33667 | — |
| 107.0.64.0/23 | AS33667 | — |
| 135.132.64.0/19 | AS33667 | — |
| 138.226.112.0/21 | AS33667 | — |
| 138.226.192.0/21 | AS33667 | — |
| 138.226.192.0/22 | AS33667 | — |
| 138.226.196.0/22 | AS33667 | — |
| 138.226.48.0/21 | AS33667 | — |
| 138.226.64.0/20 | AS33667 | — |
| 139.181.26.0/24 | AS33667 | — |
| 139.181.7.0/24 | AS33667 | — |
| 140.89.64.0/18 | AS33667 | — |
| 157.240.151.0/24 | AS33667 | — |
| 157.240.152.0/24 | AS33667 | — |
| 161.82.0.0/24 | AS33667 | — |
| 161.82.12.0/24 | AS33667 | — |
| 161.82.44.0/23 | AS33667 | — |
| 162.218.89.0/24 | AS33667 | — |
| 169.230.76.0/24 | AS33667 | — |
| 169.230.77.0/24 | AS33667 | — |
| 185.201.41.0/24 | AS33667 | — |
| 185.201.43.0/24 | AS33667 | — |
| 185.22.43.0/24 | AS33667 | — |
| 192.189.161.0/24 | AS33667 | — |
| 192.206.19.0/24 | AS33667 | — |
| 192.70.238.0/24 | AS33667 | — |
| 198.145.106.0/24 | AS33667 | — |
| 198.202.219.0/24 | AS33667 | — |
| 2001:559:123::/48 | AS33667 | — |
| 2001:559:13c::/48 | AS33667 | — |
| 2001:559:1b1::/48 | AS33667 | — |
| 2001:559:249::/48 | AS33667 | — |
| 2001:559:2bf::/48 | AS33667 | — |
| 2001:559:2c1::/48 | AS33667 | — |
| 2001:559:32d::/48 | AS33667 | — |
| 2001:559:373::/48 | AS33667 | — |
| 2001:559:47c::/48 | AS33667 | — |
| 2001:559:492::/48 | AS33667 | — |
| 2001:559:5a2::/48 | AS33667 | — |
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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 AS33667 represent?
AS33667 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 AS33667 page?
They help explain the scale, interconnection depth, and route structure of AS33667. 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 AS33667?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS33667, 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.