asn.dev

Routing security

AS33660 CMCS - Comcast Cable Communications, LLC

Unclassified ARIN

RPKI valid 95% 55 of 58 announcements
RPKI invalid 0 none
No ROA 3 not covered by any ROA
IRR registered 81% 10 missing · 1 other origin
ROAs 1,377 authorising this AS

Announcements

What this network originates

58 observed

Every prefix observed with AS33660 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
129.134.166.0/24No ROANo IRR53
129.134.167.0/24No ROANo IRR53
192.16.177.0/24No ROAIRR other origin54
2a03:2887:ff46::/48RPKI validNo IRR28
2a03:2887:ff47::/48RPKI validNo IRR28
50.204.89.0/24RPKI validNo IRR52
50.207.68.0/24RPKI validNo IRR52
50.217.32.0/24RPKI validNo IRR1
50.222.146.0/24RPKI validNo IRR52
50.222.157.0/24RPKI validNo IRR52
50.224.25.0/24RPKI validNo IRR52
2001:559:2de::/48RPKI validIRR28
2001:559:2e4::/48RPKI validIRR28
2001:559:3b2::/48RPKI validIRR28
2001:559:3b3::/48RPKI validIRR28
2001:559:3c4::/48RPKI validIRR28
2001:559:4a7::/48RPKI validIRR28
2001:559:4a9::/48RPKI validIRR28
2001:559:5d8::/48RPKI validIRR28
2001:559:20a::/48RPKI validIRR28
2001:559:26c::/48RPKI validIRR28
2001:559:29::/48RPKI validIRR28
2001:559:31a::/48RPKI validIRR28
2001:559:37f::/48RPKI validIRR28
2001:559:41a::/48RPKI validIRR28
2001:559:57f::/48RPKI validIRR28
2001:559:58c::/48RPKI validIRR28
2001:559:82d4::/48RPKI validIRR28
2001:559:82e8::/48RPKI validIRR28
2001:559:83a6::/48RPKI validIRR28
2001:559:85e0::/48RPKI validIRR28
2001:559:86b6::/48RPKI validIRR28
2001:559:521::/48RPKI validIRR28
2001:559:808a::/48RPKI validIRR28
2001:559:819d::/48RPKI validIRR28
2001:559:831b::/48RPKI validIRR28
2001:559:8092::/48RPKI validIRR28
2001:559:8137::/48RPKI validIRR28
2001:559:8329::/48RPKI validIRR28
2001:559:8443::/48RPKI validIRR28
2001:559:8450::/48RPKI validIRR28
2001:559:8460::/48RPKI validIRR28
2001:559:8484::/48RPKI validIRR28
2001:559:8485::/48RPKI validIRR28
2001:559:8782::/48RPKI validIRR28
2001:559:c0ef::/48RPKI validIRR28
2001:559:c2e6::/48RPKI validIRR28
2001:559:c3f5::/48RPKI validIRR28
2001:559:c16d::/48RPKI validIRR28
2001:559:c54c::/48RPKI validIRR28
2001:559:c154::/48RPKI validIRR28
2001:559:c171::/48RPKI validIRR28
2001:559:c173::/48RPKI validIRR28
2001:559:c285::/48RPKI validIRR28
2001:559:c348::/48RPKI validIRR28
2001:559:c493::/48RPKI validIRR28
2001:559:fa::/48RPKI validIRR28
2001:559:fb::/48RPKI validIRR28

RPKI · ROAs

Route origin authorisations

1,377 ROAs

Signed statements by address holders that AS33660 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
23.30.48.0/20/20ARIN
24.2.64.0/19/19ARIN
24.2.64.0/22/22ARIN
24.2.68.0/23/23ARIN
24.2.70.0/23/23ARIN
24.2.72.0/23/23ARIN
24.2.74.0/23/23ARIN
24.2.76.0/22/22ARIN
24.2.80.0/23/23ARIN
24.2.82.0/23/23ARIN
24.2.84.0/23/23ARIN
24.2.86.0/23/23ARIN
24.2.96.0/20/20ARIN
24.2.96.0/21/21ARIN
24.2.104.0/21/21ARIN
24.10.128.0/17/17ARIN
24.10.128.0/23/23ARIN
24.10.130.0/23/23ARIN
24.10.132.0/23/23ARIN
24.10.134.0/23/23ARIN
24.10.136.0/22/22ARIN
24.10.140.0/23/23ARIN
24.10.142.0/23/23ARIN
24.10.152.0/24/24ARIN
24.10.153.0/24/24ARIN
24.10.154.0/24/24ARIN
24.10.155.0/24/24ARIN
24.10.156.0/23/23ARIN
24.10.158.0/23/23ARIN
24.10.160.0/23/23ARIN
24.10.162.0/23/23ARIN
24.10.164.0/23/23ARIN
24.10.166.0/23/23ARIN
24.10.168.0/23/23ARIN
24.10.170.0/23/23ARIN
24.10.172.0/23/23ARIN
24.10.174.0/23/23ARIN
24.10.176.0/23/23ARIN
24.10.178.0/23/23ARIN
24.10.180.0/23/23ARIN
24.10.182.0/23/23ARIN
24.10.184.0/23/23ARIN
24.10.186.0/23/23ARIN
24.10.188.0/22/22ARIN
24.10.192.0/23/23ARIN
24.10.194.0/23/23ARIN
24.10.196.0/23/23ARIN
24.10.198.0/23/23ARIN
24.10.200.0/22/22ARIN
24.10.204.0/23/23ARIN
24.10.206.0/23/23ARIN
24.10.208.0/23/23ARIN
24.10.210.0/23/23ARIN
24.10.212.0/22/22ARIN
24.10.216.0/22/22ARIN
24.10.220.0/22/22ARIN
24.10.224.0/23/23ARIN
24.10.228.0/23/23ARIN
24.10.230.0/23/23ARIN
24.10.232.0/23/23ARIN
24.10.234.0/23/23ARIN
24.10.236.0/23/23ARIN
24.10.238.0/23/23ARIN
24.10.240.0/22/22ARIN
24.10.244.0/24/24ARIN
24.10.245.0/24/24ARIN
24.10.246.0/23/23ARIN
24.10.248.0/22/22ARIN
24.10.252.0/23/23ARIN
24.10.254.0/23/23ARIN
24.11.0.0/17/17ARIN
24.11.0.0/23/23ARIN
24.11.2.0/23/23ARIN
24.11.4.0/23/23ARIN
24.11.6.0/23/23ARIN
24.11.8.0/23/23ARIN
24.11.10.0/23/23ARIN
24.11.12.0/22/22ARIN
24.11.16.0/23/23ARIN
24.11.18.0/23/23ARIN
24.11.24.0/23/23ARIN
24.11.26.0/23/23ARIN
24.11.28.0/23/23ARIN
24.11.30.0/23/23ARIN
24.11.32.0/22/22ARIN
24.11.36.0/23/23ARIN
24.11.38.0/23/23ARIN
24.11.40.0/23/23ARIN
24.11.42.0/23/23ARIN
24.11.44.0/23/23ARIN
24.11.46.0/23/23ARIN
24.11.48.0/23/23ARIN
24.11.50.0/23/23ARIN
24.11.52.0/23/23ARIN
24.11.54.0/23/23ARIN
24.11.56.0/23/23ARIN
24.11.58.0/23/23ARIN
24.11.60.0/23/23ARIN
24.11.62.0/23/23ARIN
24.11.64.0/23/23ARIN
24.11.66.0/24/24ARIN
24.11.67.0/24/24ARIN
24.11.68.0/23/23ARIN
24.11.70.0/23/23ARIN
24.11.72.0/22/22ARIN
24.11.76.0/24/24ARIN
24.11.77.0/24/24ARIN
24.11.78.0/23/23ARIN
24.11.80.0/23/23ARIN
24.11.82.0/23/23ARIN
24.11.84.0/24/24ARIN
24.11.85.0/24/24ARIN
24.11.86.0/23/23ARIN
24.11.88.0/23/23ARIN
24.11.90.0/23/23ARIN
24.11.92.0/24/24ARIN
24.11.93.0/24/24ARIN
24.11.94.0/23/23ARIN
24.11.96.0/23/23ARIN
24.11.98.0/24/24ARIN
24.11.99.0/24/24ARIN
24.11.100.0/23/23ARIN
24.11.102.0/24/24ARIN
24.11.103.0/24/24ARIN
24.11.108.0/22/22ARIN
24.11.112.0/23/23ARIN
24.11.114.0/23/23ARIN
24.11.116.0/23/23ARIN
24.11.118.0/23/23ARIN
24.11.120.0/24/24ARIN
24.11.121.0/24/24ARIN
24.11.122.0/24/24ARIN
24.11.123.0/24/24ARIN
24.11.124.0/23/23ARIN
24.11.126.0/23/23ARIN
24.124.175.0/24/24ARIN
24.153.94.0/23/23ARIN
50.73.32.0/20/20ARIN
50.77.44.0/22/22ARIN
50.79.64.0/21/21ARIN
50.168.66.0/24/24ARIN
50.176.96.0/20/20ARIN
50.184.168.0/21/21ARIN
50.188.136.0/21/21ARIN
50.188.144.0/21/21ARIN
50.188.152.0/21/21ARIN
50.192.192.0/20/20ARIN
50.198.176.0/20/20ARIN
50.203.161.0/24/24ARIN
50.204.89.0/24/24ARIN
50.206.135.0/24/24ARIN
50.207.68.0/24/24ARIN
50.208.240.0/20/20ARIN
50.213.136.0/21/21ARIN
50.215.216.0/21/21ARIN
50.217.32.0/24/24ARIN
50.219.40.0/24/24ARIN
50.220.230.0/24/24ARIN
50.221.5.0/24/24ARIN
50.222.146.0/24/24ARIN
50.222.157.0/24/24ARIN
50.224.25.0/24/24ARIN
50.224.26.0/24/24ARIN
50.227.51.0/24/24ARIN
50.234.186.0/24/24ARIN
50.237.123.0/24/24ARIN
50.243.0.0/20/20ARIN
50.247.48.0/20/20ARIN
50.252.128.0/20/20ARIN
50.255.192.0/20/20ARIN
67.161.208.0/20/20ARIN
67.161.208.0/22/22ARIN
67.161.212.0/23/23ARIN
67.161.214.0/23/23ARIN
67.161.216.0/23/23ARIN
67.161.218.0/23/23ARIN
67.161.220.0/23/23ARIN
67.161.222.0/23/23ARIN
67.161.240.0/20/20ARIN
67.161.244.0/23/23ARIN
67.161.246.0/24/24ARIN
67.161.247.0/24/24ARIN
67.161.248.0/23/23ARIN
67.161.250.0/23/23ARIN
67.161.252.0/22/22ARIN
67.163.64.0/19/19ARIN
67.163.64.0/24/24ARIN
67.163.65.0/24/24ARIN
67.163.66.0/23/23ARIN
67.163.68.0/24/24ARIN
67.163.69.0/24/24ARIN
67.163.70.0/23/23ARIN
67.163.72.0/24/24ARIN
67.163.73.0/24/24ARIN
67.163.74.0/23/23ARIN
67.163.76.0/23/23ARIN
67.163.78.0/23/23ARIN
67.163.80.0/23/23ARIN
67.163.82.0/23/23ARIN
67.163.84.0/23/23ARIN

Showing 200 of 1,377.

ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.

RPKI · ASPA

Declared transit providers

No ASPA record This network has not published an ASPA object. ASPA lets a network sign the list of its transit providers, so routers can reject paths that route through anyone else (route leaks). Only a few thousand networks publish one so far, so its absence is normal.

IRR

Registered route objects

106 objects · 59 not announced

Route objects naming AS33660 as origin, across RADb, the RIR registries, ALTDB and NTTCOM. Objects that are registered but not announced come first: a stale object lets anyone who can spoof this origin through an IRR-built filter.

PrefixSourceDescriptionMaintainerChangedRouting
50.176.96.0/20ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
50.188.144.0/21ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
50.188.152.0/21ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
184.117.144.0/20ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:558:a025::/48ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:559:14b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:1c5::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:1cf::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:201::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:297::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:299::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:29a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:29f::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:2a1::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:2a3::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:366::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:39b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:536::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:599::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:80f9::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:80fb::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8127::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8193::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:81a6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:821b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8274::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8282::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:828c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:828d::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:82fd::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:82fe::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8352::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8365::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:83bb::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:83c4::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:83e2::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:84a0::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:84a1::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:84a2::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8670::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:8683::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:86db::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:876a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c006::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c0ff::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c160::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c16e::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c1ef::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c232::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c288::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c28a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c2bf::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c2c0::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c311::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c316::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c33f::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c376::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2001:559:c3e1::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Not announced
2603:3086::/32ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:559:29::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:fa::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:fb::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:20a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:26c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:2de::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:2e4::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:31a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:37f::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:3b2::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:3b3::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:3c4::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:41a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:4a7::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:4a9::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:521::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:57f::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:58c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:5d8::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:808a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8092::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8137::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:819d::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:82d4::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:82e8::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:831b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8329::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:83a6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8443::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8450::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8460::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8484::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8485::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:85e0::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:86b6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:8782::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c0ef::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c154::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c16d::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c171::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c173::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c285::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c2e6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c348::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c3f5::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c493::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced
2001:559:c54c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-19Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS33660 directly show who expects to carry it.

AS-setWhereRelationship
AS-COMCAST-IBONERADBLists AS33660 as a direct member
AS-COMCAST-RANSRADBLists AS33660 as a direct member
AS7922:AS-COMCAST-RANSARINLists AS33660 as a direct member

RPKI from rpki-client, validated 2026-11-04 19:18 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-11-04. Cross-check on bgp.he.net.