asn.dev

Routing security

AS33668 CMCS

Residential ARIN

RPKI valid 92% 87 of 95 announcements
RPKI invalid 0 none
No ROA 8 not covered by any ROA
IRR registered 24% 70 missing · 2 other origin
ROAs 3,355 authorising this AS

Announcements

What this network originates

95 observed

Every prefix observed with AS33668 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
192.88.105.0/24No ROANo IRR53
192.138.205.0/24No ROAIRR other origin53
198.180.251.0/24No ROANo IRR53
206.201.156.0/24No ROAIRR other origin53
206.201.158.0/24No ROANo IRR53
2602:810:20c3::/48No ROANo IRR30
157.240.130.0/24No ROAIRR52
157.240.135.0/24No ROAIRR52
50.202.125.0/24RPKI validNo IRR51
50.203.250.0/24RPKI validNo IRR51
50.204.170.0/24RPKI validNo IRR51
50.206.127.0/24RPKI validNo IRR51
50.207.92.0/24RPKI validNo IRR50
50.217.249.0/24RPKI validNo IRR50
50.220.170.0/24RPKI validNo IRR50
50.221.158.0/24RPKI validNo IRR50
50.223.155.0/24RPKI validNo IRR50
50.226.70.0/24RPKI validNo IRR51
50.227.241.0/24RPKI validNo IRR51
50.228.137.0/24RPKI validNo IRR51
50.229.7.0/24RPKI validNo IRR51
50.232.15.0/24RPKI validNo IRR51
50.233.62.0/24RPKI validNo IRR51
50.233.114.0/24RPKI validNo IRR50
50.238.250.0/24RPKI validNo IRR51
50.239.133.0/24RPKI validNo IRR51
107.0.213.0/24RPKI validNo IRR51
2001:559:1ef::/48RPKI validNo IRR29
2001:559:3ce::/48RPKI validNo IRR29
2001:559:3d9::/48RPKI validNo IRR29
2001:559:5c8::/48RPKI validNo IRR29
2001:559:7e7::/48RPKI validNo IRR29
2001:559:15c::/48RPKI validNo IRR29
2001:559:25d::/48RPKI validNo IRR29
2001:559:33d::/48RPKI validNo IRR29
2001:559:80ac::/48RPKI validNo IRR29
2001:559:82d7::/48RPKI validNo IRR29
2001:559:82f7::/48RPKI validNo IRR29
2001:559:83e5::/48RPKI validNo IRR29
2001:559:84c0::/48RPKI validNo IRR29
2001:559:84db::/48RPKI validNo IRR29
2001:559:85fa::/48RPKI validNo IRR29
2001:559:85fb::/48RPKI validNo IRR29
2001:559:248::/48RPKI validNo IRR29
2001:559:254::/48RPKI validNo IRR29
2001:559:261::/48RPKI validNo IRR29
2001:559:318::/48RPKI validNo IRR29
2001:559:365::/48RPKI validNo IRR29
2001:559:391::/48RPKI validNo IRR29
2001:559:704::/48RPKI validNo IRR29
2001:559:809e::/48RPKI validNo IRR29
2001:559:815e::/48RPKI validNo IRR29
2001:559:817a::/48RPKI validNo IRR29
2001:559:817b::/48RPKI validNo IRR29
2001:559:847f::/48RPKI validNo IRR29
2001:559:860e::/48RPKI validNo IRR29
2001:559:8441::/48RPKI validNo IRR29
2001:559:8567::/48RPKI validNo IRR29
2001:559:8709::/48RPKI validNo IRR29
2001:559:8752::/48RPKI validNo IRR29
2001:559:8774::/48RPKI validNo IRR29
2001:559:c1a3::/48RPKI validNo IRR29
2001:559:c1b4::/48RPKI validNo IRR29
2001:559:c3aa::/48RPKI validNo IRR29
2001:559:c3c5::/48RPKI validNo IRR29
2001:559:c3e2::/48RPKI validNo IRR29
2001:559:c3eb::/48RPKI validNo IRR29
2001:559:c45a::/48RPKI validNo IRR29
2001:559:c48d::/48RPKI validNo IRR29
2001:559:c150::/48RPKI validNo IRR29
2001:559:c500::/48RPKI validNo IRR29
2001:559:c539::/48RPKI validNo IRR29
2001:559:c568::/48RPKI validNo IRR29
2001:559:f2::/48RPKI validNo IRR29
2001:559:3fe::/48RPKI validIRR29
2001:559:5a4::/48RPKI validIRR29
2001:559:7e0::/48RPKI validIRR29
2001:559:10d::/48RPKI validIRR29
2001:559:10e::/48RPKI validIRR29
2001:559:25c::/48RPKI validIRR29
2001:559:44::/48RPKI validIRR29
2001:559:270::/48RPKI validIRR29
2001:559:330::/48RPKI validIRR29
2001:559:361::/48RPKI validIRR29
2001:559:835e::/48RPKI validIRR29
2001:559:8093::/48RPKI validIRR29
2001:559:8577::/48RPKI validIRR29
2001:559:8730::/48RPKI validIRR29
2001:559:c0c8::/48RPKI validIRR29
2001:559:c0e6::/48RPKI validIRR29
2001:559:c1b6::/48RPKI validIRR29
2001:559:c1c0::/48RPKI validIRR29
2001:559:c1cd::/48RPKI validIRR29
2001:559:c1ce::/48RPKI validIRR29
2001:559:c345::/48RPKI validIRR29

RPKI · ROAs

Route origin authorisations

3,355 ROAs

Signed statements by address holders that AS33668 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
24.127.0.0/16/16ARIN
24.127.0.0/22/22ARIN
24.127.4.0/23/23ARIN
24.127.6.0/23/23ARIN
24.127.8.0/23/23ARIN
24.127.10.0/23/23ARIN
24.127.12.0/22/22ARIN
24.127.16.0/22/22ARIN
24.127.20.0/23/23ARIN
24.127.22.0/23/23ARIN
24.127.24.0/23/23ARIN
24.127.26.0/23/23ARIN
24.127.28.0/23/23ARIN
24.127.30.0/23/23ARIN
24.127.32.0/23/23ARIN
24.127.34.0/23/23ARIN
24.127.36.0/23/23ARIN
24.127.38.0/23/23ARIN
24.127.40.0/23/23ARIN
24.127.42.0/23/23ARIN
24.127.44.0/23/23ARIN
24.127.46.0/23/23ARIN
24.127.48.0/23/23ARIN
24.127.50.0/23/23ARIN
24.127.52.0/23/23ARIN
24.127.54.0/23/23ARIN
24.127.56.0/23/23ARIN
24.127.58.0/23/23ARIN
24.127.62.0/23/23ARIN
24.127.64.0/23/23ARIN
24.127.66.0/23/23ARIN
24.127.68.0/23/23ARIN
24.127.70.0/23/23ARIN
24.127.72.0/23/23ARIN
24.127.74.0/23/23ARIN
24.127.76.0/23/23ARIN
24.127.78.0/23/23ARIN
24.127.80.0/23/23ARIN
24.127.82.0/23/23ARIN
24.127.84.0/23/23ARIN
24.127.86.0/23/23ARIN
24.127.88.0/23/23ARIN
24.127.90.0/23/23ARIN
24.127.92.0/23/23ARIN
24.127.94.0/23/23ARIN
24.127.96.0/23/23ARIN
24.127.98.0/23/23ARIN
24.127.100.0/23/23ARIN
24.127.102.0/23/23ARIN
24.127.104.0/23/23ARIN
24.127.106.0/23/23ARIN
24.127.108.0/23/23ARIN
24.127.110.0/23/23ARIN
24.127.112.0/23/23ARIN
24.127.114.0/23/23ARIN
24.127.116.0/22/22ARIN
24.127.128.0/22/22ARIN
24.127.132.0/22/22ARIN
24.127.136.0/22/22ARIN
24.127.140.0/22/22ARIN
24.127.144.0/21/21ARIN
24.127.152.0/21/21ARIN
24.127.160.0/21/21ARIN
24.127.168.0/21/21ARIN
24.127.176.0/21/21ARIN
24.127.184.0/22/22ARIN
24.127.188.0/22/22ARIN
24.127.192.0/24/24ARIN
24.127.193.0/24/24ARIN
24.127.194.0/24/24ARIN
24.127.195.0/24/24ARIN
24.127.196.0/22/22ARIN
24.127.200.0/22/22ARIN
24.127.208.0/21/21ARIN
24.127.216.0/22/22ARIN
24.127.220.0/22/22ARIN
24.127.225.0/24/24ARIN
24.127.226.0/23/23ARIN
24.127.228.0/23/23ARIN
24.127.230.0/23/23ARIN
24.127.240.0/22/22ARIN
24.127.244.0/23/23ARIN
24.127.246.0/23/23ARIN
24.127.248.0/24/24ARIN
24.127.249.0/24/24ARIN
24.127.250.0/23/23ARIN
24.127.252.0/22/22ARIN
24.128.128.0/17/17ARIN
24.128.128.0/23/23ARIN
24.128.130.0/23/23ARIN
24.128.132.0/23/23ARIN
24.128.134.0/23/23ARIN
24.128.136.0/23/23ARIN
24.128.138.0/23/23ARIN
24.128.140.0/23/23ARIN
24.128.142.0/23/23ARIN
24.128.144.0/22/22ARIN
24.128.148.0/23/23ARIN
24.128.150.0/23/23ARIN
24.128.152.0/23/23ARIN
24.128.154.0/23/23ARIN
24.128.156.0/23/23ARIN
24.128.158.0/23/23ARIN
24.128.160.0/23/23ARIN
24.128.162.0/23/23ARIN
24.128.164.0/23/23ARIN
24.128.166.0/23/23ARIN
24.128.168.0/23/23ARIN
24.128.170.0/23/23ARIN
24.128.172.0/23/23ARIN
24.128.174.0/23/23ARIN
24.128.176.0/23/23ARIN
24.128.178.0/23/23ARIN
24.128.180.0/23/23ARIN
24.128.182.0/23/23ARIN
24.128.184.0/23/23ARIN
24.128.186.0/23/23ARIN
24.128.188.0/22/22ARIN
24.128.192.0/21/21ARIN
24.128.200.0/23/23ARIN
24.128.202.0/23/23ARIN
24.128.204.0/23/23ARIN
24.128.206.0/23/23ARIN
24.128.208.0/23/23ARIN
24.128.210.0/23/23ARIN
24.128.212.0/23/23ARIN
24.128.214.0/23/23ARIN
24.128.216.0/23/23ARIN
24.128.218.0/23/23ARIN
24.128.220.0/23/23ARIN
24.128.222.0/23/23ARIN
24.128.224.0/23/23ARIN
24.128.226.0/23/23ARIN
24.128.228.0/23/23ARIN
24.128.230.0/23/23ARIN
24.128.232.0/23/23ARIN
24.128.234.0/23/23ARIN
24.128.236.0/22/22ARIN
24.128.240.0/23/23ARIN
24.128.242.0/23/23ARIN
24.128.244.0/23/23ARIN
24.128.246.0/23/23ARIN
24.128.248.0/23/23ARIN
24.128.252.0/23/23ARIN
24.128.254.0/23/23ARIN
50.76.176.0/20/20ARIN
50.77.192.0/18/18ARIN
50.173.173.0/24/24ARIN
50.185.64.0/18/18ARIN
50.192.96.0/19/19ARIN
50.197.96.0/19/19ARIN
50.199.32.0/20/20ARIN
50.200.255.0/24/24ARIN
50.201.152.0/24/24ARIN
50.202.42.0/24/24ARIN
50.202.125.0/24/24ARIN
50.203.250.0/24/24ARIN
50.204.170.0/24/24ARIN
50.206.127.0/24/24ARIN
50.207.92.0/24/24ARIN
50.210.160.0/19/19ARIN
50.216.168.0/24/24ARIN
50.217.249.0/24/24ARIN
50.218.128.0/18/18ARIN
50.218.135.0/24/24ARIN
50.218.144.0/24/24ARIN
50.220.82.0/24/24ARIN
50.220.170.0/24/24ARIN
50.220.205.0/24/24ARIN
50.221.158.0/24/24ARIN
50.223.155.0/24/24ARIN
50.226.70.0/24/24ARIN
50.227.241.0/24/24ARIN
50.228.137.0/24/24ARIN
50.229.7.0/24/24ARIN
50.231.63.0/24/24ARIN
50.232.15.0/24/24ARIN
50.233.62.0/24/24ARIN
50.233.114.0/24/24ARIN
50.236.82.0/24/24ARIN
50.238.250.0/24/24ARIN
50.239.133.0/24/24ARIN
50.241.208.0/20/20ARIN
50.245.96.0/19/19ARIN
50.247.0.0/19/19ARIN
50.249.160.0/19/19ARIN
50.252.80.0/20/20ARIN
50.253.224.0/19/19ARIN
67.167.128.0/18/18ARIN
67.167.128.0/22/22ARIN
67.167.132.0/23/23ARIN
67.167.134.0/23/23ARIN
67.167.136.0/22/22ARIN
67.167.140.0/24/24ARIN
67.167.141.0/24/24ARIN
67.167.142.0/23/23ARIN
67.167.144.0/23/23ARIN
67.167.146.0/23/23ARIN
67.167.148.0/23/23ARIN
67.167.150.0/23/23ARIN

Showing 200 of 3,355.

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

61 objects · 38 not announced

Route objects naming AS33668 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
67.172.80.0/20RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
67.177.128.0/19RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.40.0.0/15RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.42.64.0/18RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.42.128.0/17RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.43.0.0/16RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.60.32.0/19RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.60.64.0/18RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.60.128.0/18RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.61.0.0/16RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.62.0.0/18RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.62.64.0/19RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.62.96.0/20RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.83.192.0/20RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.84.160.0/19RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.85.235.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.86.10.0/23RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.86.21.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.86.38.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.86.120.0/22RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.86.140.0/23RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.87.1.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.87.77.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
68.87.184.0/21RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
71.197.16.0/20RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
74.92.184.0/23RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
74.93.52.0/23RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
74.94.95.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
74.94.224.0/20RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
96.200.3.0/24ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
96.217.156.0/23ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
96.217.160.0/22ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
184.116.160.0/19ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
184.117.184.0/26ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
2001:558:a01a::/48ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:559:8480::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-10-23Not announced
2001:559:c2a3::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-07Not announced
2603:309c::/32ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
157.240.130.0/24RADBfdet1MAINT-AS329342023-11-13Announced
157.240.135.0/24RADBfdet1MAINT-AS329342023-11-13Announced
2001:559:44::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-02-13Announced
2001:559:10d::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-11-11Announced
2001:559:10e::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-11-11Announced
2001:559:25c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-08-07Announced
2001:559:270::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-08-07Announced
2001:559:330::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-02-13Announced
2001:559:361::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-02-13Announced
2001:559:3fe::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-04-24Announced
2001:559:5a4::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-05-08Announced
2001:559:7e0::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-09-29Announced
2001:559:8093::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-12-11Announced
2001:559:835e::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-11-11Announced
2001:559:8577::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-08-07Announced
2001:559:8730::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-08-13Announced
2001:559:c0c8::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-11-19Announced
2001:559:c0e6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-11-18Announced
2001:559:c1b6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-13Announced
2001:559:c1c0::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-02-13Announced
2001:559:c1cd::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-02-13Announced
2001:559:c1ce::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-02-13Announced
2001:559:c345::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-03-31Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS33668 directly show who expects to carry it.

AS-setWhereRelationship
AS-COMCAST-IBONERADBLists AS33668 as a direct member
AS-COMCAST-RANSRADBLists AS33668 as a direct member
AS7922:AS-COMCAST-RANSARINLists AS33668 as a direct member

RPKI from rpki-client, validated 2026-10-16 12:09 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-16. Cross-check on bgp.he.net.