asn.dev

Routing security

AS33661 CMCS

Unclassified ARIN

RPKI valid 100% 21 of 21 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 76% 5 missing · 0 other origin
ROAs 268 authorising this AS

Announcements

What this network originates

21 observed

Every prefix observed with AS33661 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
50.218.97.0/24RPKI validNo IRR52
50.220.33.0/24RPKI validNo IRR52
50.226.0.0/24RPKI validNo IRR52
50.227.97.0/24RPKI validNo IRR52
50.236.155.0/24RPKI validNo IRR52
50.237.76.0/24RPKI validIRR52
2001:559:4ed::/48RPKI validIRR29
2001:559:4ee::/48RPKI validIRR29
2001:559:85d6::/48RPKI validIRR29
2001:559:87d4::/48RPKI validIRR29
2001:559:135::/48RPKI validIRR29
2001:559:731::/48RPKI validIRR29
2001:559:830d::/48RPKI validIRR29
2001:559:864f::/48RPKI validIRR29
2001:559:878c::/48RPKI validIRR29
2001:559:8320::/48RPKI validIRR1
2001:559:8462::/48RPKI validIRR29
2001:559:c4b9::/48RPKI validIRR29
2001:559:c4ea::/48RPKI validIRR29
2001:559:c22b::/48RPKI validIRR29
2001:559:c202::/48RPKI validIRR29

RPKI · ROAs

Route origin authorisations

268 ROAs

Signed statements by address holders that AS33661 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
23.31.176.0/20/20ARIN
24.104.7.0/24/24ARIN
24.104.83.0/24/24ARIN
24.124.134.0/23/23ARIN
50.78.212.0/22/22ARIN
50.79.216.0/22/22ARIN
50.145.128.0/20/20ARIN
50.145.148.0/22/22ARIN
50.145.152.0/21/21ARIN
50.145.152.0/24/24ARIN
50.184.164.0/22/22ARIN
50.185.48.0/21/21ARIN
50.191.0.0/20/20ARIN
50.192.16.0/20/20ARIN
50.192.208.0/21/21ARIN
50.194.212.0/22/22ARIN
50.197.232.0/21/21ARIN
50.218.97.0/24/24ARIN
50.220.33.0/24/24ARIN
50.226.0.0/24/24ARIN
50.227.97.0/24/24ARIN
50.228.116.0/24/24ARIN
50.229.127.0/24/24ARIN
50.230.120.0/24/24ARIN
50.236.155.0/24/24ARIN
50.237.76.0/24/24ARIN
50.239.156.0/24/24ARIN
50.239.220.0/24/24ARIN
50.245.64.0/20/20ARIN
50.245.88.0/22/22ARIN
50.251.96.0/20/20ARIN
50.252.176.0/22/22ARIN
50.254.208.0/21/21ARIN
64.139.74.0/24/24ARIN
64.139.75.0/24/24ARIN
66.208.226.0/24/24ARIN
67.162.160.0/20/20ARIN
67.174.0.0/19/19ARIN
67.178.8.16/28/28ARIN
68.84.240.0/20/20ARIN
68.85.59.0/24/24ARIN
68.85.64.0/24/24ARIN
68.85.96.0/23/23ARIN
68.85.98.0/23/23ARIN
68.85.210.0/23/23ARIN
68.85.212.0/24/24ARIN
68.85.213.0/24/24ARIN
68.85.238.0/23/23ARIN
68.86.59.0/24/24ARIN
68.87.74.0/24/24ARIN
68.87.236.0/23/23ARIN
68.87.238.0/23/23ARIN
69.136.16.0/20/20ARIN
69.137.0.0/20/20ARIN
69.137.192.0/20/20ARIN
69.137.240.0/20/20ARIN
69.138.112.0/20/20ARIN
69.138.128.0/20/20ARIN
69.139.32.0/19/19ARIN
69.139.170.0/23/23ARIN
69.139.188.0/23/23ARIN
69.241.11.0/24/24ARIN
69.241.115.0/24/24ARIN
69.242.240.0/20/20ARIN
69.244.240.0/20/20ARIN
69.247.32.0/19/19ARIN
69.247.80.0/20/20ARIN
69.247.240.0/20/20ARIN
69.252.38.0/23/23ARIN
69.252.44.0/23/23ARIN
69.252.54.0/24/24ARIN
69.252.68.0/24/24ARIN
69.254.32.0/19/19ARIN
69.254.112.0/20/20ARIN
70.88.32.0/22/22ARIN
70.88.56.0/22/22ARIN
70.88.60.0/22/22ARIN
70.88.85.0/24/24ARIN
70.89.74.0/24/24ARIN
70.90.64.0/21/21ARIN
70.90.254.0/23/23ARIN
70.91.160.0/24/24ARIN
70.91.208.0/23/23ARIN
71.25.128.0/20/20ARIN
71.27.176.0/20/20ARIN
71.200.192.0/18/18ARIN
71.203.0.0/18/18ARIN
71.203.80.0/20/20ARIN
71.226.16.0/20/20ARIN
71.226.80.0/20/20ARIN
71.228.64.0/19/19ARIN
73.5.192.0/19/19ARIN
73.21.128.0/17/17ARIN
73.23.0.0/16/16ARIN
73.24.64.0/18/18ARIN
73.27.0.0/16/16ARIN
73.28.0.0/17/17ARIN
73.28.128.0/17/17ARIN
73.42.64.0/19/19ARIN
73.54.0.0/17/17ARIN
73.55.0.0/17/17ARIN
73.62.0.0/17/17ARIN
73.67.64.0/18/18ARIN
73.91.0.0/17/17ARIN
73.107.0.0/16/16ARIN
73.120.128.0/18/18ARIN
73.156.0.0/16/16ARIN
73.255.128.0/17/17ARIN
74.92.181.0/24/24ARIN
74.93.32.0/22/22ARIN
74.93.46.0/23/23ARIN
74.93.60.0/23/23ARIN
74.93.124.0/22/22ARIN
74.95.49.0/24/24ARIN
74.95.60.0/22/22ARIN
74.95.128.0/23/23ARIN
74.95.144.0/23/23ARIN
75.144.12.0/22/22ARIN
75.144.104.0/22/22ARIN
75.145.0.0/21/21ARIN
75.145.194.0/23/23ARIN
75.146.86.0/24/24ARIN
75.146.136.0/23/23ARIN
75.147.144.0/20/20ARIN
75.148.104.0/22/22ARIN
75.151.32.0/20/20ARIN
75.151.64.0/22/22ARIN
75.151.75.0/24/24ARIN
76.26.176.0/20/20ARIN
76.26.224.0/19/19ARIN
76.29.128.0/19/19ARIN
76.96.10.0/23/23ARIN
76.96.92.0/23/23ARIN
76.101.0.0/16/16ARIN
76.123.64.0/19/19ARIN
76.134.128.0/19/19ARIN
76.134.224.0/19/19ARIN
76.148.0.0/16/16ARIN
96.65.136.0/21/21ARIN
96.66.128.0/20/20ARIN
96.67.68.0/22/22ARIN
96.68.208.0/21/21ARIN
96.69.232.0/22/22ARIN
96.71.112.0/20/20ARIN
96.72.128.0/20/20ARIN
96.73.44.0/22/22ARIN
96.77.160.0/22/22ARIN
96.77.168.0/21/21ARIN
96.79.128.0/21/21ARIN
96.79.228.0/22/22ARIN
96.80.160.0/20/20ARIN
96.83.144.0/21/21ARIN
96.85.80.0/20/20ARIN
96.85.240.0/21/21ARIN
96.91.80.0/20/20ARIN
96.94.0.0/21/21ARIN
96.94.16.0/21/21ARIN
96.96.76.0/24/24ARIN
96.96.109.0/24/24ARIN
96.96.198.0/24/24ARIN
96.108.36.0/24/24ARIN
96.108.104.0/23/23ARIN
96.109.198.0/24/24ARIN
96.110.95.0/24/24ARIN
96.110.134.0/24/24ARIN
96.110.135.0/24/24ARIN
96.110.210.0/24/24ARIN
96.110.220.0/24/24ARIN
96.113.135.0/24/24ARIN
96.113.146.0/24/24ARIN
96.114.128.0/24/24ARIN
96.124.120.0/22/22ARIN
96.124.128.0/22/22ARIN
96.124.216.0/22/22ARIN
96.208.26.0/24/24ARIN
96.208.30.0/24/24ARIN
96.217.53.0/24/24ARIN
96.217.145.0/24/24ARIN
98.32.96.0/19/19ARIN
98.56.0.0/17/17ARIN
98.58.0.0/17/17ARIN
98.208.128.0/17/17ARIN
98.219.96.0/19/19ARIN
98.238.0.0/17/17ARIN
98.244.192.0/19/19ARIN
98.244.224.0/19/19ARIN
162.148.194.0/24/24ARIN
162.148.212.0/23/23ARIN
162.151.6.0/24/24ARIN
162.151.7.0/24/24ARIN
162.151.242.0/24/24ARIN
173.10.224.0/21/21ARIN
173.12.144.0/21/21ARIN
173.12.212.0/22/22ARIN
173.14.80.0/21/21ARIN
173.14.194.0/23/23ARIN
173.160.0.0/21/21ARIN
173.162.8.0/21/21ARIN
173.163.208.0/20/20ARIN
173.163.252.0/22/22ARIN

Showing 200 of 268.

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

56 objects · 40 not announced

Route objects naming AS33661 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
50.191.0.0/20ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
96.208.26.0/24ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
96.208.30.0/24ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
96.217.145.0/24ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
174.177.224.0/19ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
184.115.200.0/22ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
184.116.144.0/20ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
184.117.136.0/21ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
184.117.176.0/26ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
184.118.4.0/23ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Not announced
2001:558:250::/44ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:2d0::/44ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:310::/44ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:4fef::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:500b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:500f::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:5017::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:6004::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:600b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:6015::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:a017::/48ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:558:a01c::/48ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:558:a026::/48ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2001:558:fe08::/47ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:fe38::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:558:fe3a::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:124::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:157::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:237::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:7a0::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:824e::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:8298::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:8299::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:82f9::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:8339::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:839c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2001:559:83d8::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Not announced
2603:3099::/32ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2603:309e::/32ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
2603:30a6::/32ARINComcast Cable Communications, LLCMNT-CCCS2026-01-09Not announced
50.237.76.0/24ARINComcast Cable Communications, LLCMNT-CCCS2026-05-29Announced
2001:559:135::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:4ed::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:4ee::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:731::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:830d::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:8320::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:8462::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:85d6::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:864f::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:878c::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:87d4::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:c202::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:c22b::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:c4b9::/48ARINComcast Cable Communications, LLCMNT-CCCS2025-01-30Announced
2001:559:c4ea::/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 AS33661 directly show who expects to carry it.

AS-setWhereRelationship
AS-COMCAST-IBONERADBLists AS33661 as a direct member
AS7922:AS-COMCAST-RANSARINLists AS33661 as a direct member

RPKI from rpki-client, validated 2026-10-13 12:16 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-13. Cross-check on bgp.he.net.