Autonomous System
AS4721 JCOM Co., Ltd.
ISPActiveJapanJPNIC
AS4721 (JCN) is an ISP network operated by JCOM Co., Ltd. in Japan, registered with JPNIC. It has 162 IPv4 prefixes with 1,263,616 addresses and 1 IPv6 prefix, which makes it the 376th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses1,263,616in 162 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#376of 82,200 active ASNs
Details
OrganizationJCOM Co., Ltd.
AS nameJCN
Websitejcom.co.jp
Country Japan (JP)
Network typeISP
RegistryJPNIC
Abuse contact—
Registered—
Last updated2022-02-18
IPv4 prefixes
162 prefixes · 1,263,616 addresses| Network | Addresses | First – last address |
|---|---|---|
| 118.86.0.0/15 | 131,072 | 118.86.0.0 – 118.87.255.255 |
| 14.193.0.0/16 | 65,536 | 14.193.0.0 – 14.193.255.255 |
| 118.83.0.0/16 | 65,536 | 118.83.0.0 – 118.83.255.255 |
| 118.86.0.0/16 | 65,536 | 118.86.0.0 – 118.86.255.255 |
| 118.87.0.0/16 | 65,536 | 118.87.0.0 – 118.87.255.255 |
| 14.193.0.0/17 | 32,768 | 14.193.0.0 – 14.193.127.255 |
| 14.193.128.0/17 | 32,768 | 14.193.128.0 – 14.193.255.255 |
| 111.90.0.0/17 | 32,768 | 111.90.0.0 – 111.90.127.255 |
| 118.83.0.0/17 | 32,768 | 118.83.0.0 – 118.83.127.255 |
| 118.83.128.0/17 | 32,768 | 118.83.128.0 – 118.83.255.255 |
| 122.255.128.0/17 | 32,768 | 122.255.128.0 – 122.255.255.255 |
| 111.90.0.0/18 | 16,384 | 111.90.0.0 – 111.90.63.255 |
| 111.90.64.0/18 | 16,384 | 111.90.64.0 – 111.90.127.255 |
| 112.137.64.0/18 | 16,384 | 112.137.64.0 – 112.137.127.255 |
| 114.134.192.0/18 | 16,384 | 114.134.192.0 – 114.134.255.255 |
| 116.70.128.0/18 | 16,384 | 116.70.128.0 – 116.70.191.255 |
| 122.255.128.0/18 | 16,384 | 122.255.128.0 – 122.255.191.255 |
| 122.255.192.0/18 | 16,384 | 122.255.192.0 – 122.255.255.255 |
| 175.41.64.0/18 | 16,384 | 175.41.64.0 – 175.41.127.255 |
| 220.208.64.0/18 | 16,384 | 220.208.64.0 – 220.208.127.255 |
| 221.132.128.0/18 | 16,384 | 221.132.128.0 – 221.132.191.255 |
| 61.203.224.0/19 | 8,192 | 61.203.224.0 – 61.203.255.255 |
| 110.232.0.0/19 | 8,192 | 110.232.0.0 – 110.232.31.255 |
| 112.137.64.0/19 | 8,192 | 112.137.64.0 – 112.137.95.255 |
| 112.137.96.0/19 | 8,192 | 112.137.96.0 – 112.137.127.255 |
118.86.0.0/15 14.193.0.0/16 118.83.0.0/16 118.86.0.0/16 118.87.0.0/16 14.193.0.0/17 14.193.128.0/17 111.90.0.0/17 118.83.0.0/17 118.83.128.0/17 122.255.128.0/17 111.90.0.0/18 111.90.64.0/18 112.137.64.0/18 114.134.192.0/18 116.70.128.0/18 122.255.128.0/18 122.255.192.0/18 175.41.64.0/18 220.208.64.0/18 221.132.128.0/18 61.203.224.0/19 110.232.0.0/19 112.137.64.0/19 112.137.96.0/19
The 25 largest of 162. The API and the database have all of them.
IPv6 prefixes
1 prefix- 2001:c30::/32
2001:c30::/32
Query AS4721 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=AS4721&key=YOUR_API_KEY"Any address in its prefixes resolves to AS4721, with or without a key:
curl "https://api.ipapi.is/?q=118.86.0.1"Other networks of JCOM Co., Ltd.
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