ResearchRouting table, RPKI, IRR & looking glass

AS20214 Comcast Cable Communications, LLC

AS20214 (COMCAST-20214) is registered to Comcast Cable Communications, LLC in US. It originates 117 prefixes in the global routing table.

IPv4 prefixes

IPv6 prefixes

136,192

IPv4 addresses

95%

RPKI valid

Registration

Who holds AS20214

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

AS number

AS20214

Handle

COMCAST-20214

Organization

Comcast Cable Communications, LLC

Country

ASPA

None published

Routing

What AS20214 announces

Prefixes originated by AS20214 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes

IPv6 prefixes

IPv4 addresses

136,192 (532 /24s)

RPKI valid

112 95%

RPKI invalid

RPKI not found

ROAs naming AS20214

396

With an IRR route object

96 82%

Prefixes

Announced prefixes

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

IPv4 (22)

IPv6 (95)

2001:559:89::/48 2001:559:ea::/48 2001:559:116::/48 2001:559:140::/48 2001:559:142::/48 2001:559:160::/48 2001:559:168::/48 2001:559:18b::/48 2001:559:1ac::/48 2001:559:1cb::/48 2001:559:1cd::/48 2001:559:205::/48 2001:559:232::/48 2001:559:281::/48 2001:559:2a0::/48 2001:559:2cf::/48 2001:559:2f8::/48 2001:559:386::/48 2001:559:3e6::/48 2001:559:401::/48 2001:559:463::/48 2001:559:478::/48 2001:559:4d4::/48 2001:559:4ef::/48 2001:559:514::/48 2001:559:554::/48 2001:559:55c::/48 2001:559:5ae::/48 2001:559:5af::/48 2001:559:71c::/48 2001:559:77e::/48 2001:559:7c7::/48 2001:559:7c9::/48 2001:559:804f::/48 2001:559:8075::/48 2001:559:8077::/48 2001:559:8106::/48 2001:559:8112::/48 2001:559:815b::/48 2001:559:81d1::/48 2001:559:81d2::/48 2001:559:81d3::/48 2001:559:821d::/48 2001:559:8332::/48 2001:559:8334::/48 2001:559:8425::/48 2001:559:846c::/48 2001:559:84c6::/48 2001:559:84ef::/48 2001:559:8502::/48 2001:559:852b::/48 2001:559:8568::/48 2001:559:85af::/48 2001:559:85be::/48 2001:559:85bf::/48 2001:559:86c9::/48 2001:559:870f::/48 2001:559:8750::/48 2001:559:8751::/48 2001:559:8762::/48 2001:559:8797::/48 2001:559:8798::/48 2001:559:c02f::/48 2001:559:c030::/48 2001:559:c03b::/48 2001:559:c03c::/48 2001:559:c0b9::/48 2001:559:c0ba::/48 2001:559:c0d0::/48 2001:559:c0d1::/48 2001:559:c111::/48 2001:559:c119::/48 2001:559:c136::/48 2001:559:c164::/48 2001:559:c1ac::/48 2001:559:c1b3::/48 2001:559:c1f5::/48 2001:559:c245::/48 2001:559:c246::/48 2001:559:c25b::/48 2001:559:c25c::/48 2001:559:c3ce::/48 2001:559:c427::/48 2001:559:c440::/48 2001:559:c47b::/48 2001:559:c4c3::/48 2001:559:c4f0::/48 2001:559:c4f1::/48 2001:559:c4f2::/48 2001:559:c501::/48 2001:559:c51b::/48 2001:559:c520::/48 2001:559:c52c::/48 2001:559:c557::/48 2001:559:c55e::/48

RPKI valid RPKI invalid no ROA covers it

Neighbors

Who AS20214 is reached through

The AS just before AS20214 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 5

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 AS20214: ARIN 158 · LEVEL3 33 · RADB 23

as-sets that list AS20214 (7)

AS-COMCAST-IBONE AS-COMCAST-RANS AS-CTBC-CUSTOMERS109 AS-LEVEL3-CUSTOMERS-NA AS-LEVEL3-ORIGINS-NA AS-LUMEN-CUSTOMERS-ASNS AS7922:AS-COMCAST-RANS

Tools

Check AS20214 live

ASN lookup and WHOIS RPKI validator ASPA validator IRR lookup