ResearchRouting table, RPKI, IRR & looking glass

AS18402 NATIONAL LIBRARY BOARD

AS18402 (NLB-AS-SG-AP) is registered to NATIONAL LIBRARY BOARD in SG. It originates 7 prefixes in the global routing table.

6
IPv4 prefixes
1
IPv6 prefixes
1,536
IPv4 addresses
14%
RPKI valid

Who holds AS18402

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

AS number
AS18402
Handle
NLB-AS-SG-AP
Organization
NATIONAL LIBRARY BOARD
Country
SG
ASPA
None published

What AS18402 announces

Prefixes originated by AS18402 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
6
IPv6 prefixes
1
IPv4 addresses
1,536 (6 /24s)
RPKI valid
1 14%
RPKI invalid
0
RPKI not found
6
ROAs naming AS18402
1
With an IRR route object
1 14%

Announced prefixes

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

Who AS18402 is reached through

The AS just before AS18402 in the paths our looking glass collectors hold, for 7 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.