ResearchRouting table, RPKI, IRR & looking glass

AS17937 NIKKEI ADVANCED SYSTEMS INC.

AS17937 (NDMC) is registered to NIKKEI ADVANCED SYSTEMS INC. in JP. It originates 4 prefixes in the global routing table.

3
IPv4 prefixes
1
IPv6 prefixes
5,376
IPv4 addresses
0%
RPKI valid

Who holds AS17937

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

AS number
AS17937
Handle
NDMC
Organization
NIKKEI ADVANCED SYSTEMS INC.
Country
JP
ASPA
None published

What AS17937 announces

Prefixes originated by AS17937 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
3
IPv6 prefixes
1
IPv4 addresses
5,376 (21 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
4
ROAs naming AS17937
0
With an IRR route object
4 100%

Announced prefixes

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

IPv4 (3)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS17937 is reached through

The AS just before AS17937 in the paths our looking glass collectors hold, for 4 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
APNICNASMAINT-JPNIC
RADBNDMCMAINT-AS17937

Route objects with origin AS17937: RADB 4

as-sets that list AS17937 (10)