AS17958 Kasaoka Cable Vision LIMITED
AS17958 is operated by Kasaoka Cable Vision LIMITED and registered with APNIC (JP) since 2001-09-21.
It announces 8 IPv4 and 1 IPv6 prefixes, 100% of them RPKI valid.
RIPE RIS sees 9 upstream and peer networks and 1 downstream networks next to it.
PeeringDB lists it as a Cable/DSL/ISP network at 6 internet exchanges and 2 facilities. Its peering policy is open.
| Name | Kasaoka Cable Vision LIMITED |
|---|---|
| Registry handle | KCV |
| Registry (RIR) | APNIC |
| Country | Japan (JP) |
| Delegated on | 2001-09-21 |
| Network type | Cable/DSL/ISP, Asia Pacific |
| Peering policy | Open |
| IRR as-set | AS-17958 |
| Prefixes (IPv4 / IPv6) | 8 / 1 |
| RPKI valid | 100% (9 / 9) |
| Upstreams and peers | 9 |
| Downstream networks | 1 |
| Website | yumenet.jp |
Routing health
- AS17958 announces 8 IPv4 and 1 IPv6 prefixes.
- All 9 announced prefixes are RPKI valid.
- 9 upstreams and peers, 1 downstream networks seen.
For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.
Announced prefixes 9
- 103.2.96.0/22
- 133.226.160.0/20
- 157.112.160.0/20
- 180.178.80.0/21
- 218.40.96.0/20
- 218.40.102.0/24
- 219.103.48.0/20
- 220.247.184.0/21
- 2401:a240::/32
Upstreams and peers 9
The networks RIPE RIS sees next to AS17958 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 20 IPv4, 5 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| BBIX Osaka | 1 | 10G | Yes |
| BBIX Tokyo | 1 | 10G | Yes |
| JPIX OSAKA | 1 | 10G | Yes |
| JPIX TOKYO | 1 | 20G | Yes |
| JPNAP Osaka | 1 | 10G | Yes |
| JPNAP Tokyo: Peering | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| Digital Edge TYO2 (ComSpace 1) - Tokyo | Tokyo | JP |
| NTT DATA Dojima (building #4) | Osaka | JP |
More about AS17958
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 14:47 UTC. The country is where the AS number was registered, not necessarily where the network operates.