Country
—
ASN LANDING PAGE
AS33660
CMCS - Comcast Cable Communications, LLC
Last updated · Jul 20, 2026
Total prefixes
59
IPv4 prefixes
9
IPv6 prefixes
50
ASN summary
How to read the scale of AS33660
CMCS - Comcast Cable Communications, LLC currently reports 59 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 AS33660 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
AS33660 ASN lookupAS33660 BGPAS33660 peersAS33660 prefixesAS33660 upstreamsCMCS - Comcast Cable Communications, LLC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS54113
AS54113
—
AS16785
AS16785
—
AS23389
AS23389
—
AS33741
AS33741
—
AS393459
AS393459
—
AS394185
AS394185
—
AS11052
AS11052
—
AS11396
AS11396
—
AS54308
AS54308
—
AS54977
AS54977
—
AS55251
AS55251
—
AS10786
AS10786
—
AS399421
AS399421
—
AS397612
AS397612
—
AS393541
AS393541
—
AS394662
AS394662
—
AS399965
AS399965
—
AS40644
AS40644
—
AS402114
AS402114
—
AS23154
AS23154
—
AS29298
AS29298
—
AS27178
AS27178
—
AS19477
AS19477
—
AS33173
AS33173
—
AS54629
AS54629
—
AS400284
AS400284
—
AS32602
AS32602
—
AS14149
AS14149
—
AS393940
AS393940
—
AS402277
AS402277
—
AS395994
AS395994
—
AS17150
AS17150
—
AS393917
AS393917
—
AS400988
AS400988
—
AS53882
AS53882
—
AS13335
AS13335
—
AS19648
AS19648
—
AS55018
AS55018
—
AS63169
AS63169
—
AS11791
AS11791
—
Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 129.134.166.0/24 | AS33660 | — |
| 129.134.167.0/24 | AS33660 | — |
| 192.16.177.0/24 | AS33660 | — |
| 2001:559:20a::/48 | AS33660 | — |
| 2001:559:26c::/48 | AS33660 | — |
| 2001:559:29::/48 | AS33660 | — |
| 2001:559:2de::/48 | AS33660 | — |
| 2001:559:2e4::/48 | AS33660 | — |
| 2001:559:31a::/48 | AS33660 | — |
| 2001:559:37f::/48 | AS33660 | — |
| 2001:559:3b2::/48 | AS33660 | — |
| 2001:559:3b3::/48 | AS33660 | — |
| 2001:559:3c4::/48 | AS33660 | — |
| 2001:559:41a::/48 | AS33660 | — |
| 2001:559:4a7::/48 | AS33660 | — |
| 2001:559:4a9::/48 | AS33660 | — |
| 2001:559:521::/48 | AS33660 | — |
| 2001:559:57f::/48 | AS33660 | — |
| 2001:559:58c::/48 | AS33660 | — |
| 2001:559:5d8::/48 | AS33660 | — |
| 2001:559:808a::/48 | AS33660 | — |
| 2001:559:8092::/48 | AS33660 | — |
| 2001:559:8137::/48 | AS33660 | — |
| 2001:559:819d::/48 | AS33660 | — |
| 2001:559:8282::/48 | AS33660 | — |
| 2001:559:82d4::/48 | AS33660 | — |
| 2001:559:82e8::/48 | AS33660 | — |
| 2001:559:831b::/48 | AS33660 | — |
| 2001:559:8329::/48 | AS33660 | — |
| 2001:559:83a6::/48 | AS33660 | — |
| 2001:559:8443::/48 | AS33660 | — |
| 2001:559:8450::/48 | AS33660 | — |
| 2001:559:8460::/48 | AS33660 | — |
| 2001:559:8484::/48 | AS33660 | — |
| 2001:559:8485::/48 | AS33660 | — |
| 2001:559:85e0::/48 | AS33660 | — |
| 2001:559:86b6::/48 | AS33660 | — |
| 2001:559:8782::/48 | AS33660 | — |
| 2001:559:c0ef::/48 | AS33660 | — |
| 2001:559:c154::/48 | AS33660 | — |
Related ASN pages
AS15169 · Google
Review Google network organization fields, prefixes, peers, upstreams, and downstreams.
AS13335 · Cloudflare
Review Cloudflare network organization fields, prefixes, peers, upstreams, and downstreams.
AS8075 · Microsoft
Review Microsoft network organization fields, prefixes, peers, upstreams, and downstreams.
AS16509 · Amazon
Review Amazon network organization fields, prefixes, peers, upstreams, and downstreams.
Related lookups and next steps
Frequently asked questions about this ASN page
What does AS33660 represent?
AS33660 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 AS33660 page?
They help explain the scale, interconnection depth, and route structure of AS33660. 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 AS33660?
Open a concrete IP page to check how the address maps into AS33660, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
BGP and ASN Basics Guide
Use real IP and ASN pages to understand ASNs, BGP prefixes, peers, upstreams, and downstreams, including the limits of each snapshot.
Routing Troubleshooting and Network Analysis
Build troubleshooting context from an IP, BGP prefix, ASN, and public network relationships without treating static route data as a packet path.
Cloud Network and ASN Comparison
Compare representative cloud and edge networks by ASN, announced prefixes, peers, upstreams, and downstreams without inferring a specific host or customer workload.