AS131937
JCV
Joetsu Cable Vision
Registry
Authoritative registration data
- AS number
- 131937
- Name
- JCV
- Organisation
- Joetsu Cable Vision
- Country
-
JP
Japan
- RIR
- APNIC
- Registered
- —
IPv4 prefixes
10
IPv6 prefixes
2
Total announced
12
Announced prefixes
Observed in BGP by route collectors, not a registry allocation list
| 126.251.0.0/19 | IPv4 | /19 | not checked | |
| 170.249.96.0/19 | IPv4 | /19 | not checked | |
| 126.251.128.0/20 | IPv4 | /20 | not checked | |
| 126.251.144.0/20 | IPv4 | /20 | not checked | |
| 126.251.112.0/21 | IPv4 | /21 | not checked | |
| 126.251.32.0/21 | IPv4 | /21 | not checked | |
| 170.249.64.0/21 | IPv4 | /21 | not checked | |
| 103.118.92.0/22 | IPv4 | /22 | not checked | |
| 202.223.12.0/22 | IPv4 | /22 | not checked | |
| 103.152.66.0/23 | IPv4 | /23 | not checked | |
| 2403:4040::/32 | IPv6 | /32 | RPKI valid | |
| 2406:2b40::/32 | IPv6 | /32 | not checked |
No rows match “”.
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Internet Exchanges
Exchanges where this network has a listed peering LAN connection
| Address families | ||
|---|---|---|
| BBIX Osaka | 100,000 Mbps | IPv4 · IPv6 |
| BBIX Tokyo | 100,000 Mbps | IPv4 · IPv6 |
| JPIX TOKYO | 100,000 Mbps | IPv4 · IPv6 |
| JPNAP Tokyo: Peering | 40,000 Mbps | IPv4 · IPv6 |
No rows match “”.
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Exchange membership means the network has a listed connection; it does not prove peering with other members.
Observed adjacencies
Networks seen next to AS131937 in BGP paths by route collectors.
Observed upstreams
7 networks seen before AS131937 in AS paths
| Families | |||
|---|---|---|---|
| AS2497 IIJ | 226 | 2,646 |
v4
v6
|
| AS9824 JTCL-JP-AS | 129 | 437 |
v4
v6
|
| AS17676 GIGAINFRA | 30 | 354 |
v4
v6
|
| AS6939 HURRICANE | 23 | 247 |
v4
|
| AS20485 TRANSTELECOM | 5 | 50 |
v4
|
| AS8966 Etisalat-AS | 3 | 30 |
v4
|
| AS9304 HUTCHISON-AS-AP | 1 | 10 |
v4
|
No rows match “”.
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Observed downstreams
0 networks seen after AS131937 in AS paths
No downstreams observed
This AS was not seen carrying traffic towards another network.
Uncertain adjacencies
13 adjacencies that may be an artefact of collector peering
| Families | |||
|---|---|---|---|
| AS24482 SGGS-AS-AP | 1 | 112 |
v4
v6
|
| AS1828 UNITAS | 1 | 12 |
v4
v6
|
| AS2500 WIDE-BB | 1 | 12 |
v4
v6
|
| AS4777 APNIC-COLO | 1 | 12 |
v4
v6
|
| AS9002 RETN-AS | 1 | 12 |
v4
v6
|
| AS17639 CONVERGE-AS | 1 | 12 |
v4
v6
|
| AS18106 VIEWQWEST-SG-AP | 1 | 12 |
v4
v6
|
| AS35280 F5 | 1 | 12 |
v4
v6
|
| AS36236 NETACTUATE | 1 | 12 |
v4
v6
|
| AS45489 SLT-GLOBAL | 1 | 12 |
v4
v6
|
| AS49544 i3Dnet | 1 | 12 |
v4
v6
|
| AS59105 HOMENOC | 1 | 12 |
v4
v6
|
| AS25152 K-ROOT-SERVER | 1 | 2 |
v6
|
No rows match “”.
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