Autonomous System
AS18097 D.C.N. Corporation
ISPActiveJapanAPNIC
AS18097 (DCN) is an ISP network operated by D.C.N. Corporation in Japan, registered with APNIC. It has 7 IPv4 prefixes with 10,752 addresses and 1 IPv6 prefix, which makes it the 9,744th largest of 82,283 active autonomous systems by IPv4 space.
IPv4 addresses10,752in 7 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#9,744of 82,283 active ASNs
Details
OrganizationD.C.N. Corporation
AS nameDCN
Websitedcn.ad.jp
Country Japan (JP)
Network typeISP
RegistryAPNIC
Abuse contacthostmaster@nic.ad.jp
Registered—
Last updated2024-10-03
IPv4 prefixes
7 prefixes · 10,752 addresses| Network | Addresses | First – last address |
|---|---|---|
| 219.105.32.0/20 | 4,096 | 219.105.32.0 – 219.105.47.255 |
| 119.15.144.0/21 | 2,048 | 119.15.144.0 – 119.15.151.255 |
| 27.109.120.0/22 | 1,024 | 27.109.120.0 – 27.109.123.255 |
| 103.36.140.0/22 | 1,024 | 103.36.140.0 – 103.36.143.255 |
| 103.83.24.0/22 | 1,024 | 103.83.24.0 – 103.83.27.255 |
| 123.108.84.0/22 | 1,024 | 123.108.84.0 – 123.108.87.255 |
| 216.179.198.0/23 | 512 | 216.179.198.0 – 216.179.199.255 |
219.105.32.0/20 119.15.144.0/21 27.109.120.0/22 103.36.140.0/22 103.83.24.0/22 123.108.84.0/22 216.179.198.0/23
IPv6 prefixes
1 prefix- 2402:c400::/32
2402:c400::/32
Query AS18097 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=AS18097&key=YOUR_API_KEY"Any address in its prefixes resolves to AS18097, with or without a key:
curl "https://api.ipapi.is/?q=219.105.32.1"Largest networks in Japan
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