ResearchRouting table, RPKI, IRR & looking glass

AS33489 Comcast Cable Communications, LLC

AS33489 (COMCAST-33489) is registered to Comcast Cable Communications, LLC in US. It originates 44 prefixes in the global routing table.

10
IPv4 prefixes
34
IPv6 prefixes
2,560
IPv4 addresses
93%
RPKI valid

Who holds AS33489

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

AS number
AS33489
Handle
COMCAST-33489
Organization
Comcast Cable Communications, LLC
Country
US
ASPA
None published

What AS33489 announces

Prefixes originated by AS33489 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
10
IPv6 prefixes
34
IPv4 addresses
2,560 (10 /24s)
RPKI valid
41 93%
RPKI invalid
0
RPKI not found
3
ROAs naming AS33489
309
With an IRR route object
34 77%

Who AS33489 is reached through

The AS just before AS33489 in the paths our looking glass collectors hold, for 44 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

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

Sourceas-nameMaintained by
LEVEL3NMNT-CMCS

Route objects with origin AS33489: ARIN 84 · LEVEL3 7 · RADB 3

as-sets that list AS33489 (5)