ResearchRouting table, RPKI, IRR & looking glass

AS33491 Comcast Cable Communications, LLC

AS33491 (COMCAST-33491) is registered to Comcast Cable Communications, LLC in US. It originates 282 prefixes in the global routing table.

IPv4 prefixes

201

IPv6 prefixes

46,848

IPv4 addresses

94%

RPKI valid

Registration

Who holds AS33491

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number

AS33491

Handle

COMCAST-33491

Organization

Comcast Cable Communications, LLC

Country

ASPA

None published

Routing

What AS33491 announces

Prefixes originated by AS33491 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes

IPv6 prefixes

201

IPv4 addresses

46,848 (183 /24s)

RPKI valid

267 94%

RPKI invalid

RPKI not found

ROAs naming AS33491

7,817

With an IRR route object

201 71%

Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (81)

24.104.47.0/24 50.201.119.0/24 50.201.191.0/24 50.202.73.0/24 50.203.174.0/24 50.203.242.0/24 50.204.23.0/24 50.204.189.0/24 50.205.54.0/23 50.205.166.0/24 50.206.250.0/24 50.207.233.0/24 50.216.36.0/24 50.216.227.0/24 50.217.237.0/24 50.218.78.0/24 50.219.59.0/24 50.219.60.0/24 50.220.4.0/22 50.220.44.0/24 50.220.116.0/24 50.220.130.0/23 50.220.188.0/24 50.224.45.0/24 50.224.140.0/23 50.224.194.0/24 50.225.88.0/24 50.227.239.0/24 50.228.97.0/24 50.229.76.0/22 50.230.91.0/24 50.231.36.0/24 50.231.52.0/24 50.231.119.0/24 50.231.218.0/24 50.231.221.0/24 50.232.93.0/24 50.232.95.0/24 50.232.142.0/24 50.232.176.0/24 50.232.195.0/24 50.233.216.0/24 50.233.247.0/24 50.234.21.0/24 50.234.141.0/24 50.235.155.0/24 50.237.12.0/24 50.237.39.0/24 50.237.111.0/24 50.237.112.0/24 50.238.81.0/24 50.239.160.0/24 66.240.58.0/24 107.0.70.0/24 107.0.79.0/24 107.0.96.0/23 107.0.125.0/24 107.0.138.0/24 107.0.212.0/24 107.0.216.0/24 107.1.102.0/23 107.1.185.0/24 107.1.211.0/24 107.1.219.0/24 107.1.253.0/24 164.68.64.0/20 164.68.80.0/21 164.68.88.0/22 164.68.92.0/23 164.68.94.0/23 168.102.131.0/24 192.137.57.0/24 198.179.255.0/24 199.68.13.0/24 204.68.241.0/24 204.152.156.0/24 204.194.2.0/24 205.167.202.0/23 209.23.249.0/24 209.51.81.0/24 209.153.0.0/18

IPv6 (201)

2001:559:26::/48 2001:559:2f::/48 2001:559:35::/48 2001:559:49::/48 2001:559:7e::/48 2001:559:7f::/48 2001:559:b0::/48 2001:559:b1::/48 2001:559:bd::/48 2001:559:be::/48 2001:559:c9::/48 2001:559:ca::/48 2001:559:12d::/48 2001:559:134::/48 2001:559:146::/48 2001:559:148::/48 2001:559:15d::/48 2001:559:1d6::/48 2001:559:1e3::/48 2001:559:1fc::/48 2001:559:1ff::/48 2001:559:204::/48 2001:559:221::/48 2001:559:222::/48 2001:559:223::/48 2001:559:224::/48 2001:559:225::/48 2001:559:226::/48 2001:559:228::/48 2001:559:229::/48 2001:559:22a::/48 2001:559:22b::/48 2001:559:22d::/48 2001:559:22e::/48 2001:559:22f::/48 2001:559:230::/48 2001:559:231::/48 2001:559:24b::/48 2001:559:24c::/48 2001:559:27b::/48 2001:559:2a5::/48 2001:559:2d1::/48 2001:559:2e3::/48 2001:559:303::/48 2001:559:308::/48 2001:559:309::/48 2001:559:311::/48 2001:559:314::/48 2001:559:32f::/48 2001:559:39e::/48 2001:559:3c2::/48 2001:559:3c9::/48 2001:559:3cb::/48 2001:559:3ee::/48 2001:559:3fa::/48 2001:559:408::/48 2001:559:427::/48 2001:559:474::/48 2001:559:47d::/48 2001:559:4a2::/48 2001:559:4c3::/48 2001:559:4fa::/48 2001:559:4fb::/48 2001:559:4ff::/48 2001:559:52a::/48 2001:559:54f::/48 2001:559:557::/48 2001:559:592::/48 2001:559:599::/48 2001:559:5a9::/48 2001:559:5ac::/48 2001:559:5ca::/48 2001:559:5f9::/48 2001:559:5fc::/48 2001:559:71b::/48 2001:559:71f::/48 2001:559:73f::/48 2001:559:767::/48 2001:559:774::/48 2001:559:792::/48 2001:559:7b2::/48 2001:559:7b4::/48 2001:559:7ca::/48 2001:559:7ec::/48 2001:559:7f3::/48 2001:559:8014::/48 2001:559:8019::/48 2001:559:803a::/48 2001:559:803c::/48 2001:559:8050::/48 2001:559:8051::/48 2001:559:8056::/48 2001:559:80af::/48 2001:559:8108::/48 2001:559:810c::/48 2001:559:8111::/48 2001:559:8132::/48 2001:559:813d::/48 2001:559:8157::/48 2001:559:815d::/48 2001:559:8162::/48 2001:559:81e7::/48 2001:559:81f6::/48 2001:559:81fd::/48 2001:559:8210::/48 2001:559:8246::/48 2001:559:82bf::/48 2001:559:82df::/48 2001:559:832d::/48 2001:559:836c::/48 2001:559:8386::/48 2001:559:83bc::/48 2001:559:841e::/48 2001:559:8447::/48 2001:559:844a::/48 2001:559:848a::/48 2001:559:84b4::/48 2001:559:84bb::/48 2001:559:84d2::/48 2001:559:8514::/48

Show 81 more

2001:559:8517::/48 2001:559:8531::/48 2001:559:8537::/48 2001:559:853b::/48 2001:559:8546::/48 2001:559:854e::/48 2001:559:8588::/48 2001:559:85b0::/48 2001:559:85b6::/48 2001:559:85b7::/48 2001:559:85c2::/48 2001:559:85e5::/48 2001:559:85e6::/48 2001:559:8619::/48 2001:559:8638::/48 2001:559:8649::/48 2001:559:864c::/48 2001:559:8650::/48 2001:559:8654::/48 2001:559:869d::/48 2001:559:86af::/48 2001:559:86be::/48 2001:559:86f6::/48 2001:559:8710::/48 2001:559:871e::/48 2001:559:872d::/48 2001:559:873f::/48 2001:559:8742::/48 2001:559:8755::/48 2001:559:8756::/48 2001:559:8793::/48 2001:559:87bc::/48 2001:559:87e6::/48 2001:559:87f7::/48 2001:559:c003::/48 2001:559:c028::/48 2001:559:c029::/48 2001:559:c03d::/48 2001:559:c042::/48 2001:559:c05d::/48 2001:559:c080::/48 2001:559:c081::/48 2001:559:c08b::/48 2001:559:c113::/48 2001:559:c131::/48 2001:559:c15b::/48 2001:559:c15f::/48 2001:559:c16b::/48 2001:559:c175::/48 2001:559:c177::/48 2001:559:c186::/48 2001:559:c195::/48 2001:559:c197::/48 2001:559:c19c::/48 2001:559:c19d::/48 2001:559:c19e::/48 2001:559:c19f::/48 2001:559:c205::/48 2001:559:c208::/48 2001:559:c20a::/48 2001:559:c21d::/48 2001:559:c225::/48 2001:559:c228::/48 2001:559:c23e::/48 2001:559:c28c::/48 2001:559:c28d::/48 2001:559:c295::/48 2001:559:c2a1::/48 2001:559:c2df::/48 2001:559:c301::/48 2001:559:c3a3::/48 2001:559:c430::/48 2001:559:c44c::/48 2001:559:c4a9::/48 2001:559:c4ac::/48 2001:559:c4b1::/48 2001:559:c4e4::/48 2001:559:c4e5::/48 2001:559:c4fa::/48 2001:559:c530::/48 2001:559:c53d::/48

RPKI valid RPKI invalid no ROA covers it

Neighbors

Who AS33491 is reached through

The AS just before AS33491 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS7922 COMCAST-7922 60 AS3356 LEVEL3 4

ASPA

Provider authorization

AS33491 publishes no ASPA of its own. 1 AS name it as a provider in theirs. Check a path.

The 1 ASes that name AS33491 as a provider

AS22187 RAULAND-BORG

IRR

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Source	as-name	Maintained by
LEVEL3	N	MNT-CMCS

Route objects with origin AS33491: ARIN 356 · RADB 44 · LEVEL3 40

as-sets that list AS33491 (6)

AS-COMCAST-IBONE AS-COMCAST-RANS AS-CTBC-CUSTOMERS65 AS-LEVEL3-ORIGINS-NA AS-LUMEN-CUSTOMERS-ASNS AS7922:AS-COMCAST-RANS

Tools

Check AS33491 live

ASN lookup and WHOIS RPKI validator ASPA validator IRR lookup