ResearchRouting table, RPKI, IRR & looking glass

AS33657 Comcast Cable Communications, LLC

AS33657 (CMCS) is registered to Comcast Cable Communications, LLC in US. It originates 274 prefixes in the global routing table.

IPv4 prefixes

245

IPv6 prefixes

11,520

IPv4 addresses

95%

RPKI valid

Registration

Who holds AS33657

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

AS number

AS33657

Handle

CMCS

Organization

Comcast Cable Communications, LLC

Country

ASPA

None published

Routing

What AS33657 announces

Prefixes originated by AS33657 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes

IPv6 prefixes

245

IPv4 addresses

11,520 (45 /24s)

RPKI valid

262 95%

RPKI invalid

RPKI not found

ROAs naming AS33657

702

With an IRR route object

0 0%

Prefixes

Announced prefixes

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

IPv4 (29)

IPv6 (245)

2001:559:48::/48 2001:559:7a::/48 2001:559:87::/48 2001:559:a2::/48 2001:559:ae::/48 2001:559:db::/48 2001:559:110::/48 2001:559:136::/48 2001:559:16a::/48 2001:559:191::/48 2001:559:1da::/48 2001:559:1f0::/48 2001:559:1f8::/48 2001:559:202::/48 2001:559:214::/48 2001:559:246::/48 2001:559:25a::/48 2001:559:25b::/48 2001:559:282::/48 2001:559:284::/48 2001:559:288::/48 2001:559:2b6::/48 2001:559:2ca::/48 2001:559:2cb::/48 2001:559:2f3::/48 2001:559:300::/48 2001:559:304::/48 2001:559:30d::/48 2001:559:319::/48 2001:559:380::/48 2001:559:3ba::/48 2001:559:3ca::/48 2001:559:3d2::/48 2001:559:3dc::/48 2001:559:3eb::/48 2001:559:3f1::/48 2001:559:414::/48 2001:559:42c::/48 2001:559:43a::/48 2001:559:45a::/48 2001:559:488::/48 2001:559:489::/48 2001:559:491::/48 2001:559:4a0::/48 2001:559:4a5::/48 2001:559:4a8::/48 2001:559:548::/48 2001:559:574::/48 2001:559:588::/48 2001:559:5b7::/48 2001:559:5cb::/48 2001:559:5cd::/48 2001:559:5d3::/48 2001:559:5ef::/48 2001:559:70d::/48 2001:559:714::/48 2001:559:718::/48 2001:559:721::/48 2001:559:724::/48 2001:559:737::/48 2001:559:74b::/48 2001:559:758::/48 2001:559:75e::/48 2001:559:794::/48 2001:559:7a1::/48 2001:559:7be::/48 2001:559:7d0::/48 2001:559:7e2::/48 2001:559:7e5::/48 2001:559:7e6::/48 2001:559:7e9::/48 2001:559:7fe::/48 2001:559:800a::/48 2001:559:803f::/48 2001:559:8040::/48 2001:559:8041::/48 2001:559:805e::/48 2001:559:8061::/48 2001:559:808e::/48 2001:559:8090::/48 2001:559:80b0::/48 2001:559:80b1::/48 2001:559:80b5::/48 2001:559:80c2::/48 2001:559:80cb::/48 2001:559:80d3::/48 2001:559:80e9::/48 2001:559:80f5::/48 2001:559:80fc::/48 2001:559:80fd::/48 2001:559:810e::/48 2001:559:8140::/48 2001:559:8141::/48 2001:559:814f::/48 2001:559:8154::/48 2001:559:8161::/48 2001:559:816a::/48 2001:559:816b::/48 2001:559:816d::/48 2001:559:8171::/48 2001:559:8180::/48 2001:559:81b5::/48 2001:559:81ca::/48 2001:559:81f0::/48 2001:559:81ff::/48 2001:559:8212::/48 2001:559:8213::/48 2001:559:8215::/48 2001:559:8247::/48 2001:559:8262::/48 2001:559:8263::/48 2001:559:82c9::/48 2001:559:82d8::/48 2001:559:832a::/48 2001:559:8331::/48 2001:559:8336::/48 2001:559:8338::/48 2001:559:833a::/48 2001:559:834c::/48 2001:559:835c::/48

Show 125 more

2001:559:836f::/48 2001:559:837f::/48 2001:559:8380::/48 2001:559:8396::/48 2001:559:83b9::/48 2001:559:83eb::/48 2001:559:840d::/48 2001:559:8419::/48 2001:559:841b::/48 2001:559:841d::/48 2001:559:8444::/48 2001:559:846a::/48 2001:559:847a::/48 2001:559:847e::/48 2001:559:849f::/48 2001:559:84af::/48 2001:559:84bc::/48 2001:559:84be::/48 2001:559:84cc::/48 2001:559:84de::/48 2001:559:84e1::/48 2001:559:8510::/48 2001:559:8516::/48 2001:559:857e::/48 2001:559:857f::/48 2001:559:8581::/48 2001:559:8582::/48 2001:559:8583::/48 2001:559:85a7::/48 2001:559:85ab::/48 2001:559:85bc::/48 2001:559:85cd::/48 2001:559:85e4::/48 2001:559:85ec::/48 2001:559:85f0::/48 2001:559:8617::/48 2001:559:864a::/48 2001:559:865a::/48 2001:559:865b::/48 2001:559:8682::/48 2001:559:869b::/48 2001:559:869c::/48 2001:559:86ba::/48 2001:559:8722::/48 2001:559:8726::/48 2001:559:8728::/48 2001:559:8740::/48 2001:559:874d::/48 2001:559:874f::/48 2001:559:875e::/48 2001:559:8779::/48 2001:559:8786::/48 2001:559:8794::/48 2001:559:87b4::/48 2001:559:87cc::/48 2001:559:87f5::/48 2001:559:c012::/48 2001:559:c05b::/48 2001:559:c06a::/48 2001:559:c098::/48 2001:559:c0c2::/48 2001:559:c0c3::/48 2001:559:c0c4::/48 2001:559:c130::/48 2001:559:c133::/48 2001:559:c140::/48 2001:559:c141::/48 2001:559:c15e::/48 2001:559:c178::/48 2001:559:c180::/48 2001:559:c1a1::/48 2001:559:c1b5::/48 2001:559:c1b8::/48 2001:559:c1d3::/48 2001:559:c1f0::/48 2001:559:c209::/48 2001:559:c221::/48 2001:559:c277::/48 2001:559:c29f::/48 2001:559:c2a0::/48 2001:559:c2b0::/48 2001:559:c2b1::/48 2001:559:c2c6::/48 2001:559:c2d9::/48 2001:559:c2e2::/48 2001:559:c305::/48 2001:559:c307::/48 2001:559:c30a::/48 2001:559:c320::/48 2001:559:c32e::/48 2001:559:c342::/48 2001:559:c349::/48 2001:559:c351::/48 2001:559:c365::/48 2001:559:c379::/48 2001:559:c37a::/48 2001:559:c388::/48 2001:559:c390::/48 2001:559:c39d::/48 2001:559:c3b0::/48 2001:559:c3c4::/48 2001:559:c3d3::/48 2001:559:c3d6::/48 2001:559:c3ea::/48 2001:559:c3f2::/48 2001:559:c3f3::/48 2001:559:c42a::/48 2001:559:c438::/48 2001:559:c43e::/48 2001:559:c44d::/48 2001:559:c454::/48 2001:559:c468::/48 2001:559:c478::/48 2001:559:c48f::/48 2001:559:c4a7::/48 2001:559:c4b0::/48 2001:559:c4b8::/48 2001:559:c4bf::/48 2001:559:c4d9::/48 2001:559:c4f7::/48 2001:559:c4f8::/48 2001:559:c505::/48 2001:559:c516::/48 2001:559:c54f::/48 2001:559:c572::/48

RPKI valid RPKI invalid no ROA covers it

Neighbors

Who AS33657 is reached through

The AS just before AS33657 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 59 AS3356 LEVEL3 2

ASPA

Provider authorization

AS33657 publishes no ASPA of its own. 1 AS name it as a provider in theirs. Check a path.

The 1 ASes that name AS33657 as a provider

AS16881 DAVID-C-PRALL-INTERNET

IRR

Routing registry objects

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

Route objects with origin AS33657: RADB 20 · LEVEL3 14 · ARIN 7 · REACH 1

as-sets that list AS33657 (5)

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

Tools

Check AS33657 live

ASN lookup and WHOIS RPKI validator ASPA validator IRR lookup