ResearchRouting table, RPKI, IRR & looking glass

AS17958 Kasaoka Cable Vision Co,LTD.

AS17958 (KCV) is registered to Kasaoka Cable Vision Co,LTD. in JP. It originates 8 prefixes in the global routing table.

7
IPv4 prefixes
1
IPv6 prefixes
21,504
IPv4 addresses
100%
RPKI valid

Who holds AS17958

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

AS number
AS17958
Handle
KCV
Organization
Kasaoka Cable Vision Co,LTD.
Country
JP
ASPA
None published

What AS17958 announces

Prefixes originated by AS17958 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
7
IPv6 prefixes
1
IPv4 addresses
21,504 (84 /24s)
RPKI valid
8 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS17958
8
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 AS17958 is reached through

The AS just before AS17958 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.

Routing registry objects

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