ResearchRouting table, RPKI, IRR & looking glass

AS21504 The Bessemer Group, Inc.

AS21504 (BESSEMER-GROUP-INCORPORATED) is registered to The Bessemer Group, Inc. in US. It originates 20 prefixes in the global routing table.

20
IPv4 prefixes
0
IPv6 prefixes
4,864
IPv4 addresses
20%
RPKI valid

Who holds AS21504

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

AS number
AS21504
Handle
BESSEMER-GROUP-INCORPORATED
Organization
The Bessemer Group, Inc.
Country
US
ASPA
None published

What AS21504 announces

Prefixes originated by AS21504 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
20
IPv6 prefixes
0
IPv4 addresses
4,864 (19 /24s)
RPKI valid
4 20%
RPKI invalid
0
RPKI not found
16
ROAs naming AS21504
4
With an IRR route object
17 85%

Who AS21504 is reached through

The AS just before AS21504 in the paths our looking glass collectors hold, for 20 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
RADBRoadRunnerMAINT-RR

Route objects with origin AS21504: ARIN 19 · RADB 17

as-sets that list AS21504 (13)