Autonomous System

AS131937 Joetsu Cable Vision

ISPActiveJapanJPNIC

AS131937 (JCV) is an ISP network operated by Joetsu Cable Vision in Japan, registered with JPNIC. It has 10 IPv4 prefixes with 33,280 addresses and 2 IPv6 prefixes, which makes it the 5,225th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses33,280in 10 prefixes
IPv6 prefixes2≈ 1.6 × 10²⁹ addresses
Size rank#5,225of 82,200 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationJoetsu Cable Vision
AS nameJCV
Websitejcv.co.jp
Country Japan (JP)
Network typeISP
RegistryJPNIC
Abuse contacthostmaster@idnic.net
Registered—
Last updated2018-07-25

IPv4 prefixes

10 prefixes · 33,280 addresses
NetworkAddressesFirst – last address
126.251.0.0/198,192126.251.0.0 – 126.251.31.255
170.249.96.0/198,192170.249.96.0 – 170.249.127.255
126.251.128.0/204,096126.251.128.0 – 126.251.143.255
126.251.144.0/204,096126.251.144.0 – 126.251.159.255
126.251.32.0/212,048126.251.32.0 – 126.251.39.255
126.251.112.0/212,048126.251.112.0 – 126.251.119.255
170.249.64.0/212,048170.249.64.0 – 170.249.71.255
103.118.92.0/221,024103.118.92.0 – 103.118.95.255
202.223.12.0/221,024202.223.12.0 – 202.223.15.255
103.152.66.0/23512103.152.66.0 – 103.152.67.255

IPv6 prefixes

2 prefixes
  • 2403:4040::/32
  • 2406:2b40::/32

Query AS131937 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS131937&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS131937, with or without a key:

curl "https://api.ipapi.is/?q=126.251.0.1"

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