asn.dev

Routing security

AS33666 CMCS

Unclassified ARIN Cable/DSL/ISP

RPKI valid 50% 3 of 6 announcements
RPKI invalid 0 none
No ROA 3 not covered by any ROA
IRR registered 50% 1 missing · 2 other origin
ROAs 110 authorising this AS

Announcements

What this network originates

6 observed

Every prefix observed with AS33666 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
66.170.177.0/24No ROANo IRR52
66.170.179.0/24No ROAIRR other origin52
199.120.255.0/24No ROAIRR other origin52
2001:559:195::/48RPKI validIRR29
2001:559:233::/48RPKI validIRR29
2001:559:c507::/48RPKI validIRR29

RPKI · ROAs

Route origin authorisations

110 ROAs

Signed statements by address holders that AS33666 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
23.25.176.0/21/21ARIN
23.30.192.0/21/21ARIN
24.153.90.0/23/23ARIN
50.77.32.0/21/21ARIN
50.185.32.0/20/20ARIN
50.215.208.0/21/21ARIN
50.223.208.0/22/22ARIN
50.240.0.0/21/21ARIN
50.242.152.0/21/21ARIN
50.248.120.0/21/21ARIN
50.252.152.0/21/21ARIN
64.139.92.0/24/24ARIN
66.208.193.0/24/24ARIN
67.177.64.0/18/18ARIN
68.35.192.0/18/18ARIN
68.42.48.0/20/20ARIN
68.46.224.0/20/20ARIN
68.47.128.0/20/20ARIN
68.47.144.0/20/20ARIN
68.57.128.0/18/18ARIN
68.59.48.0/20/20ARIN
68.59.64.0/18/18ARIN
68.62.192.0/20/20ARIN
68.63.0.0/18/18ARIN
68.63.64.0/20/20ARIN
68.84.16.0/20/20ARIN
68.85.202.0/24/24ARIN
68.85.236.0/23/23ARIN
68.86.30.0/24/24ARIN
68.86.52.0/24/24ARIN
68.86.181.0/24/24ARIN
68.87.161.0/24/24ARIN
68.87.248.0/24/24ARIN
69.139.196.0/24/24ARIN
69.241.1.0/24/24ARIN
69.241.83.0/24/24ARIN
69.243.224.0/20/20ARIN
69.244.208.0/20/20ARIN
69.246.128.0/18/18ARIN
69.246.160.0/20/20ARIN
69.252.47.0/24/24ARIN
69.252.49.0/24/24ARIN
69.254.160.0/19/19ARIN
69.254.208.0/20/20ARIN
70.88.10.0/23/23ARIN
70.88.48.0/24/24ARIN
70.88.49.0/24/24ARIN
70.88.50.0/24/24ARIN
70.89.68.0/23/23ARIN
70.91.116.0/23/23ARIN
70.91.161.0/24/24ARIN
70.91.223.0/24/24ARIN
71.25.200.0/21/21ARIN
71.203.96.0/20/20ARIN
71.229.0.0/20/20ARIN
71.229.16.0/20/20ARIN
73.19.128.0/18/18ARIN
73.42.0.0/18/18ARIN
73.48.80.0/20/20ARIN
73.48.96.0/19/19ARIN
73.118.0.0/17/17ARIN
74.92.250.0/23/23ARIN
74.93.166.0/24/24ARIN
74.94.223.0/24/24ARIN
74.94.244.0/22/22ARIN
74.95.135.0/24/24ARIN
74.95.146.0/24/24ARIN
75.144.32.0/23/23ARIN
75.144.224.0/22/22ARIN
75.149.232.0/21/21ARIN
75.150.24.0/22/22ARIN
76.140.128.0/18/18ARIN
96.65.144.0/20/20ARIN
96.72.24.0/21/21ARIN
96.76.0.0/21/21ARIN
96.79.216.0/23/23ARIN
96.81.8.0/21/21ARIN
96.84.148.0/22/22ARIN
96.87.0.0/21/21ARIN
96.90.16.0/21/21ARIN
96.94.24.0/21/21ARIN
96.97.79.0/24/24ARIN
96.108.32.0/23/23ARIN
96.110.145.0/24/24ARIN
96.110.211.0/24/24ARIN
96.113.188.0/24/24ARIN
96.124.132.0/22/22ARIN
96.208.50.0/24/24ARIN
98.192.128.0/19/19ARIN
98.230.0.0/17/17ARIN
162.151.81.0/24/24ARIN
162.151.221.0/24/24ARIN
173.10.200.0/21/21ARIN
173.12.152.0/21/21ARIN
173.163.232.0/21/21ARIN
184.116.240.0/21/21ARIN
184.116.248.0/22/22ARIN
2001:558:240::/44/44ARIN
2001:558:5012::/48/48ARIN
2001:558:6024::/48/48ARIN
2001:558:a01e::/48/48ARIN
2001:558:fe28::/48/48ARIN
2001:559:195::/48/48ARIN
2001:559:233::/48/48ARIN
2001:559:7c8::/48/48ARIN
2001:559:c507::/48/48ARIN
2601:4c0::/26/26ARIN
2603:24c0::/26/26ARIN
2603:301c::/32/32ARIN
2603:30a0::/32/32ARIN

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

109 objects · 106 not announced

Route objects naming AS33666 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
23.25.176.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
23.30.192.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
24.153.90.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.77.32.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.185.32.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.215.208.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.223.208.0/22ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.242.152.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.248.120.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
50.252.152.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
64.139.92.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
66.208.193.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
67.177.64.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.35.192.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.42.48.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.46.224.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.47.128.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.47.144.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.57.128.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.59.48.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.59.64.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.62.192.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.63.0.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.63.64.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.84.16.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.85.202.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.85.236.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.86.30.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.86.52.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.86.181.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.87.161.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
68.87.248.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.139.196.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.241.1.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.241.83.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.243.224.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.244.208.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.246.128.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.246.160.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.252.47.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.252.49.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.254.160.0/19ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
69.254.208.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.88.10.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.88.48.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.88.49.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.88.50.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.89.68.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.91.116.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.91.161.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
70.91.223.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
71.25.200.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
71.203.96.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
71.229.0.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
71.229.16.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
73.19.128.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
73.42.0.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
73.48.80.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
73.48.96.0/19ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
73.118.0.0/17ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
74.92.250.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
74.93.166.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
74.94.223.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
74.94.244.0/22ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
74.95.135.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
74.95.146.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
75.144.32.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
75.144.224.0/22ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
75.149.232.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
75.150.24.0/22ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
76.140.128.0/18ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.65.144.0/20ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.72.24.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.76.0.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.79.216.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.81.8.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.84.148.0/22ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.87.0.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.90.16.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.94.24.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.97.79.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.108.32.0/23ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.110.145.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.110.211.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.113.188.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.124.132.0/22ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
96.208.50.0/24ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
98.192.128.0/19ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
98.230.0.0/17ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
162.151.81.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
162.151.221.0/24ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
173.10.200.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
173.12.152.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
173.163.232.0/21ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
184.116.240.0/21ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
184.116.248.0/22ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:558:240::/44ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:5012::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:6024::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:a01e::/48ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:558:fe28::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:7c8::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2601:4c0::/26ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2603:24c0::/26ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2603:301c::/32ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2603:30a0::/32ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:559:195::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:233::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:c507::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS33666 directly show who expects to carry it.

AS-setWhereRelationship
AS-COMCAST-IBONERADBLists AS33666 as a direct member
AS-COMCAST-RANSRADBLists AS33666 as a direct member
AS7922:AS-COMCAST-RANSARINLists AS33666 as a direct member

RPKI from rpki-client, validated 2026-10-24 19:55 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-24. Cross-check on bgp.he.net.