Routing security

AS33657 CMCS

Unclassified ARIN

RPKI valid 97% 262 of 269 announcements

RPKI invalid 2 dropped by validating networks

No ROA 5 not covered by any ROA

IRR registered 0% 264 missing · 5 other origin

ROAs 702 authorising this AS

Announcements

What this network originates

269 observed

Every prefix observed with AS33657 as its origin, checked against RPKI and the IRR. Problems sort first.

Prefix	RPKI	IRR	Vantage points
50.218.16.0/24	RPKI invalid	No IRR	2
50.226.61.0/24	RPKI invalid	No IRR	2
69.67.80.0/20	No ROA	IRR other origin	53
76.78.2.0/24	No ROA	IRR other origin	53
192.110.220.0/23	No ROA	IRR other origin	53
192.189.235.0/24	No ROA	No IRR	53
208.87.105.0/24	No ROA	IRR other origin	53
50.201.252.0/24	RPKI valid	No IRR	51
50.202.117.0/24	RPKI valid	No IRR	51
50.202.155.0/24	RPKI valid	No IRR	51
50.203.251.0/24	RPKI valid	No IRR	51
50.204.116.0/24	RPKI valid	No IRR	51
50.204.128.0/24	RPKI valid	No IRR	50
50.205.74.0/24	RPKI valid	No IRR	51
50.207.162.0/24	RPKI valid	No IRR	51
50.216.214.0/24	RPKI valid	No IRR	51
50.219.87.0/24	RPKI valid	No IRR	51
50.223.158.0/24	RPKI valid	No IRR	51
50.223.159.0/24	RPKI valid	No IRR	51
50.224.212.0/24	RPKI valid	No IRR	51
50.232.109.0/24	RPKI valid	No IRR	51
50.232.173.0/24	RPKI valid	No IRR	51
50.232.184.0/24	RPKI valid	No IRR	51
50.235.98.0/24	RPKI valid	No IRR	51
50.235.236.0/24	RPKI valid	No IRR	51
50.236.38.0/24	RPKI valid	No IRR	50
50.236.234.0/24	RPKI valid	IRR other origin	51
50.238.163.0/24	RPKI valid	No IRR	50
107.1.101.0/24	RPKI valid	No IRR	51
2001:559:1da::/48	RPKI valid	No IRR	29
2001:559:1f8::/48	RPKI valid	No IRR	29
2001:559:2b6::/48	RPKI valid	No IRR	29
2001:559:2ca::/48	RPKI valid	No IRR	29
2001:559:2cb::/48	RPKI valid	No IRR	29
2001:559:2f3::/48	RPKI valid	No IRR	29
2001:559:3ba::/48	RPKI valid	No IRR	29
2001:559:3ca::/48	RPKI valid	No IRR	29
2001:559:3d2::/48	RPKI valid	No IRR	29
2001:559:3dc::/48	RPKI valid	No IRR	29
2001:559:3eb::/48	RPKI valid	No IRR	29
2001:559:3f1::/48	RPKI valid	No IRR	29
2001:559:4a0::/48	RPKI valid	No IRR	29
2001:559:4a5::/48	RPKI valid	No IRR	29
2001:559:4a8::/48	RPKI valid	No IRR	29
2001:559:5b7::/48	RPKI valid	No IRR	29
2001:559:5cb::/48	RPKI valid	No IRR	29
2001:559:5cd::/48	RPKI valid	No IRR	29
2001:559:5d3::/48	RPKI valid	No IRR	29
2001:559:5ef::/48	RPKI valid	No IRR	29
2001:559:7a::/48	RPKI valid	No IRR	29
2001:559:7a1::/48	RPKI valid	No IRR	29
2001:559:7be::/48	RPKI valid	No IRR	29
2001:559:7d0::/48	RPKI valid	No IRR	29
2001:559:7e2::/48	RPKI valid	No IRR	29
2001:559:7e5::/48	RPKI valid	No IRR	29
2001:559:7e6::/48	RPKI valid	No IRR	29
2001:559:7e9::/48	RPKI valid	No IRR	29
2001:559:7fe::/48	RPKI valid	No IRR	29
2001:559:16a::/48	RPKI valid	No IRR	29
2001:559:25a::/48	RPKI valid	No IRR	29
2001:559:25b::/48	RPKI valid	No IRR	29
2001:559:30d::/48	RPKI valid	No IRR	29
2001:559:42c::/48	RPKI valid	No IRR	29
2001:559:43a::/48	RPKI valid	No IRR	29
2001:559:45a::/48	RPKI valid	No IRR	29
2001:559:48::/48	RPKI valid	No IRR	29
2001:559:70d::/48	RPKI valid	No IRR	29
2001:559:74b::/48	RPKI valid	No IRR	29
2001:559:75e::/48	RPKI valid	No IRR	29
2001:559:80b0::/48	RPKI valid	No IRR	29
2001:559:80b1::/48	RPKI valid	No IRR	29
2001:559:80b5::/48	RPKI valid	No IRR	29
2001:559:80c2::/48	RPKI valid	No IRR	29
2001:559:80cb::/48	RPKI valid	No IRR	29
2001:559:80d3::/48	RPKI valid	No IRR	29
2001:559:80e9::/48	RPKI valid	No IRR	29
2001:559:80f5::/48	RPKI valid	No IRR	29
2001:559:80fc::/48	RPKI valid	No IRR	29
2001:559:80fd::/48	RPKI valid	No IRR	29
2001:559:81b5::/48	RPKI valid	No IRR	29
2001:559:81ca::/48	RPKI valid	No IRR	29
2001:559:81f0::/48	RPKI valid	No IRR	29
2001:559:81ff::/48	RPKI valid	No IRR	29
2001:559:82c9::/48	RPKI valid	No IRR	29
2001:559:82d8::/48	RPKI valid	No IRR	29
2001:559:83b9::/48	RPKI valid	No IRR	29
2001:559:83eb::/48	RPKI valid	No IRR	29
2001:559:84af::/48	RPKI valid	No IRR	1
2001:559:84bc::/48	RPKI valid	No IRR	29
2001:559:84be::/48	RPKI valid	No IRR	29
2001:559:84cc::/48	RPKI valid	No IRR	29
2001:559:84de::/48	RPKI valid	No IRR	29
2001:559:84e1::/48	RPKI valid	No IRR	29
2001:559:85a7::/48	RPKI valid	No IRR	29
2001:559:85ab::/48	RPKI valid	No IRR	29
2001:559:85bc::/48	RPKI valid	No IRR	29
2001:559:85cd::/48	RPKI valid	No IRR	29
2001:559:85e4::/48	RPKI valid	No IRR	29
2001:559:85ec::/48	RPKI valid	No IRR	29
2001:559:85f0::/48	RPKI valid	No IRR	29

RPKI · ROAs

Route origin authorisations

702 ROAs

Signed statements by address holders that AS33657 may originate these prefixes, up to the maximum length shown.

Prefix	Max length	Trust anchor
23.24.96.0/19	/19	ARIN
23.25.188.0/22	/22	ARIN
23.30.0.0/19	/19	ARIN
23.31.192.0/19	/19	ARIN
24.124.152.0/23	/23	ARIN
24.124.176.0/20	/20	ARIN
24.126.0.0/17	/17	ARIN
50.76.0.0/19	/19	ARIN
50.78.64.0/20	/20	ARIN
50.79.0.0/20	/20	ARIN
50.144.128.0/17	/17	ARIN
50.144.135.0/24	/24	ARIN
50.144.156.0/24	/24	ARIN
50.144.159.0/24	/24	ARIN
50.144.167.0/24	/24	ARIN
50.144.177.0/24	/24	ARIN
50.144.197.0/24	/24	ARIN
50.144.201.0/24	/24	ARIN
50.169.18.0/24	/24	ARIN
50.169.21.0/24	/24	ARIN
50.169.98.0/24	/24	ARIN
50.169.100.0/24	/24	ARIN
50.186.128.0/17	/17	ARIN
50.190.192.0/18	/18	ARIN
50.193.128.0/19	/19	ARIN
50.195.64.0/19	/19	ARIN
50.197.0.0/19	/19	ARIN
50.198.128.0/19	/19	ARIN
50.200.127.0/24	/24	ARIN
50.201.252.0/24	/24	ARIN
50.202.117.0/24	/24	ARIN
50.202.155.0/24	/24	ARIN
50.203.251.0/24	/24	ARIN
50.204.116.0/24	/24	ARIN
50.204.128.0/24	/24	ARIN
50.205.18.0/24	/24	ARIN
50.205.74.0/24	/24	ARIN
50.205.98.0/23	/23	ARIN
50.206.150.0/24	/24	ARIN
50.206.248.0/24	/24	ARIN
50.207.101.0/24	/24	ARIN
50.207.111.0/24	/24	ARIN
50.207.162.0/24	/24	ARIN
50.210.128.0/19	/19	ARIN
50.211.128.0/18	/18	ARIN
50.213.192.0/18	/18	ARIN
50.216.214.0/24	/24	ARIN
50.217.23.0/24	/24	ARIN
50.219.87.0/24	/24	ARIN
50.219.154.0/24	/24	ARIN
50.223.158.0/24	/24	ARIN
50.223.159.0/24	/24	ARIN
50.224.212.0/24	/24	ARIN
50.230.13.0/24	/24	ARIN
50.232.109.0/24	/24	ARIN
50.232.173.0/24	/24	ARIN
50.232.184.0/24	/24	ARIN
50.232.190.0/24	/24	ARIN
50.233.122.0/24	/24	ARIN
50.235.98.0/24	/24	ARIN
50.235.198.0/24	/24	ARIN
50.235.212.0/24	/24	ARIN
50.235.236.0/24	/24	ARIN
50.236.38.0/24	/24	ARIN
50.236.234.0/24	/24	ARIN
50.238.112.0/24	/24	ARIN
50.238.163.0/24	/24	ARIN
50.239.85.0/24	/24	ARIN
50.239.232.0/24	/24	ARIN
50.241.128.0/19	/19	ARIN
50.242.176.0/20	/20	ARIN
50.242.192.0/18	/18	ARIN
50.246.64.0/18	/18	ARIN
50.249.0.0/18	/18	ARIN
50.253.0.0/18	/18	ARIN
67.162.224.0/19	/19	ARIN
68.33.0.0/16	/16	ARIN
68.83.208.0/20	/20	ARIN
68.84.0.0/20	/20	ARIN
68.84.128.0/20	/20	ARIN
68.85.4.0/24	/24	ARIN
68.85.31.0/24	/24	ARIN
68.85.61.0/24	/24	ARIN
68.85.67.0/24	/24	ARIN
68.85.80.0/23	/23	ARIN
68.85.112.0/23	/23	ARIN
68.85.114.0/23	/23	ARIN
68.85.130.0/24	/24	ARIN
68.85.133.0/24	/24	ARIN
68.85.134.0/24	/24	ARIN
68.85.138.0/23	/23	ARIN
68.85.147.0/24	/24	ARIN
68.85.170.0/24	/24	ARIN
68.85.175.0/24	/24	ARIN
68.85.209.0/24	/24	ARIN
68.86.12.0/23	/23	ARIN
68.86.33.0/24	/24	ARIN
68.86.204.0/23	/23	ARIN
68.86.252.0/22	/22	ARIN
68.87.73.0/24	/24	ARIN
68.87.128.0/20	/20	ARIN
68.87.168.0/23	/23	ARIN
69.136.224.0/20	/20	ARIN
69.137.32.0/19	/19	ARIN
69.137.144.0/20	/20	ARIN
69.137.224.0/20	/20	ARIN
69.138.0.0/19	/19	ARIN
69.138.64.0/19	/19	ARIN
69.138.160.0/19	/19	ARIN
69.138.192.0/18	/18	ARIN
69.139.174.0/23	/23	ARIN
69.139.214.0/23	/23	ARIN
69.139.246.0/24	/24	ARIN
69.140.0.0/16	/16	ARIN
69.143.0.0/16	/16	ARIN
69.241.12.0/24	/24	ARIN
69.241.110.0/23	/23	ARIN
69.243.0.0/17	/17	ARIN
69.244.64.0/19	/19	ARIN
69.250.0.0/16	/16	ARIN
69.251.0.0/16	/16	ARIN
69.252.32.0/22	/22	ARIN
69.252.56.0/24	/24	ARIN
69.252.67.0/24	/24	ARIN
69.252.98.0/23	/23	ARIN
69.252.221.0/24	/24	ARIN
69.252.245.0/24	/24	ARIN
69.255.0.0/16	/16	ARIN
70.88.112.0/21	/21	ARIN
70.88.128.0/20	/20	ARIN
70.88.144.0/20	/20	ARIN
70.88.224.0/20	/20	ARIN
70.90.80.0/20	/20	ARIN
70.91.64.0/19	/19	ARIN
70.91.152.0/21	/21	ARIN
71.25.0.0/18	/18	ARIN
71.26.0.0/18	/18	ARIN
71.200.0.0/17	/17	ARIN
71.200.128.0/18	/18	ARIN
71.204.192.0/19	/19	ARIN
71.206.0.0/18	/18	ARIN
73.39.0.0/16	/16	ARIN
73.86.0.0/15	/15	ARIN
73.128.0.0/15	/15	ARIN
73.132.0.0/14	/14	ARIN
73.163.0.0/16	/16	ARIN
73.172.0.0/15	/15	ARIN
73.180.128.0/17	/17	ARIN
73.191.0.0/17	/17	ARIN
73.200.0.0/15	/15	ARIN
73.212.0.0/15	/15	ARIN
73.250.0.0/16	/16	ARIN
74.92.128.0/19	/19	ARIN
74.93.192.0/19	/19	ARIN
74.94.220.0/23	/23	ARIN
74.95.78.0/23	/23	ARIN
74.95.80.0/20	/20	ARIN
75.145.8.0/22	/22	ARIN
75.145.80.0/20	/20	ARIN
75.146.0.0/22	/22	ARIN
75.148.0.0/19	/19	ARIN
75.150.28.0/22	/22	ARIN
76.21.128.0/17	/17	ARIN
76.26.128.0/19	/19	ARIN
76.96.8.0/23	/23	ARIN
76.96.80.0/23	/23	ARIN
76.96.124.0/23	/23	ARIN
76.96.133.112/28	/28	ARIN
76.96.133.128/28	/28	ARIN
76.100.0.0/16	/16	ARIN
76.106.0.0/17	/17	ARIN
76.111.0.0/19	/19	ARIN
76.111.64.0/18	/18	ARIN
76.111.128.0/19	/19	ARIN
76.114.128.0/17	/17	ARIN
76.151.0.0/16	/16	ARIN
96.68.224.0/19	/19	ARIN
96.70.128.0/18	/18	ARIN
96.73.128.0/18	/18	ARIN
96.83.64.0/18	/18	ARIN
96.86.0.0/18	/18	ARIN
96.88.192.0/18	/18	ARIN
96.91.192.0/18	/18	ARIN
96.91.200.236/30	/30	ARIN
96.95.0.0/18	/18	ARIN
96.96.22.0/23	/23	ARIN
96.96.112.0/20	/20	ARIN
96.97.144.0/20	/20	ARIN
96.108.111.0/24	/24	ARIN
96.108.229.0/24	/24	ARIN
96.109.1.0/24	/24	ARIN
96.109.30.0/23	/23	ARIN
96.109.91.0/24	/24	ARIN
96.109.142.0/24	/24	ARIN
96.109.168.0/24	/24	ARIN
96.109.186.0/23	/23	ARIN
96.109.228.0/22	/22	ARIN
96.110.6.0/23	/23	ARIN
96.110.92.0/23	/23	ARIN
96.110.234.0/23	/23	ARIN

Showing 200 of 702.

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

27 objects · 27 not announced

Route objects naming AS33657 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.

Prefix	Source	Description	Maintainer	Changed	Routing
24.126.0.0/17	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
50.190.192.0/18	ARIN	Comcast Cable Communications, LLC	`MNT-CCCS`	2026-05-29	Not announced
50.230.13.0/24	ARIN	Comcast Cable Communications, LLC	`MNT-CCCS`	2025-06-17	Not announced
67.162.224.0/19	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.33.0.0/16	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.83.208.0/20	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.84.0.0/20	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.84.128.0/20	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.86.12.0/23	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.86.33.0/24	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.86.252.0/22	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.87.73.0/24	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.87.128.0/20	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
68.87.168.0/23	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
71.200.0.0/17	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
71.200.128.0/18	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
71.204.192.0/19	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
71.206.0.0/18	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
74.92.128.0/19	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
74.93.192.0/19	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
74.94.220.0/23	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
75.146.0.0/22	RADB	Comcast Cable Communications, Inc.	`MAINT-AS7922`	2023-11-13	Not announced
96.217.112.0/21	ARIN	Comcast Cable Communications, LLC	`MNT-CCCS`	2026-05-29	Not announced
184.112.0.0/17	ARIN	Comcast Cable Communications, LLC	`MNT-CCCS`	2025-10-15	Not announced
199.249.199.0/24	ARIN	MLK Software Services	`MNT-MSS-2`	2026-07-30	Not announced
2001:558:a000::/48	ARIN	Comcast Cable Communications, LLC	`MNT-CCCS`	2025-10-15	Not announced
2603:3088::/32	ARIN	Comcast Cable Communications, LLC	`MNT-CCCS`	2025-10-15	Not announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS33657 directly show who expects to carry it.

AS-set	Where	Relationship
`AS-COMCAST-IBONE`	RADB	Lists AS33657 as a direct member
`AS-COMCAST-RANS`	RADB	Lists AS33657 as a direct member
`AS7922:AS-COMCAST-RANS`	ARIN	Lists AS33657 as a direct member

RPKI from rpki-client, validated 2026-10-18 12:08 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-18. Cross-check on bgp.he.net.