ResearchRouting table, RPKI, IRR & looking glass

AS43 Brookhaven National Laboratory

AS43 (BNL-AS) is registered to Brookhaven National Laboratory in US. It originates 8 prefixes in the global routing table.

5
IPv4 prefixes
3
IPv6 prefixes
66,560
IPv4 addresses
12%
RPKI valid

Who holds AS43

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

AS number
AS43
Handle
BNL-AS
Organization
Brookhaven National Laboratory
Country
US
ASPA
1 provider

What AS43 announces

Prefixes originated by AS43 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
5
IPv6 prefixes
3
IPv4 addresses
66,560 (260 /24s)
RPKI valid
1 12%
RPKI invalid
0
RPKI not found
7
ROAs naming AS43
1
With an IRR route object
8 100%

Announced prefixes

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

Who AS43 is reached through

The AS just before AS43 in the paths our looking glass collectors hold, for 8 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Provider authorization

AS43 publishes an ASPA naming this provider. Check a path.

Routing registry objects

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

Sourceas-nameMaintained by
RADBBNL-ASMAINT-ESNET

Route objects with origin AS43: RADB 7 · ARIN 1

as-sets that list AS43 (10)