Autonomous System
AS9621 OTNet Co.,Inc.
ISPActiveJapanAPNIC
AS9621 (II-OKINAWA) is an ISP network operated by OTNet Co.,Inc. in Japan, registered with APNIC. It has 14 IPv4 prefixes with 76,800 addresses and 1 IPv6 prefix, which makes it the 2,770th largest of 82,141 active autonomous systems by IPv4 space.
IPv4 addresses76,800in 14 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#2,770of 82,141 active ASNs
Details
OrganizationOTNet Co.,Inc.
AS nameII-OKINAWA
Websiteotnet.co.jp
Country Japan (JP)
Network typeISP
RegistryAPNIC
Abuse contacthostmaster@nic.ad.jp
Registered—
Last updated2026-07-24
IPv4 prefixes
14 prefixes · 76,800 addresses| Network | Addresses | First – last address |
|---|---|---|
| 61.210.64.0/19 | 8,192 | 61.210.64.0 – 61.210.95.255 |
| 125.2.0.0/19 | 8,192 | 125.2.0.0 – 125.2.31.255 |
| 125.2.224.0/19 | 8,192 | 125.2.224.0 – 125.2.255.255 |
| 125.3.96.0/19 | 8,192 | 125.3.96.0 – 125.3.127.255 |
| 157.120.64.0/19 | 8,192 | 157.120.64.0 – 157.120.95.255 |
| 175.179.96.0/19 | 8,192 | 175.179.96.0 – 175.179.127.255 |
| 218.40.160.0/19 | 8,192 | 218.40.160.0 – 218.40.191.255 |
| 157.70.224.0/20 | 4,096 | 157.70.224.0 – 157.70.239.255 |
| 157.120.96.0/20 | 4,096 | 157.120.96.0 – 157.120.111.255 |
| 211.120.224.0/20 | 4,096 | 211.120.224.0 – 211.120.239.255 |
| 119.59.88.0/21 | 2,048 | 119.59.88.0 – 119.59.95.255 |
| 123.108.192.0/21 | 2,048 | 123.108.192.0 – 123.108.199.255 |
| 202.81.8.0/21 | 2,048 | 202.81.8.0 – 202.81.15.255 |
| 203.209.184.0/22 | 1,024 | 203.209.184.0 – 203.209.187.255 |
61.210.64.0/19 125.2.0.0/19 125.2.224.0/19 125.3.96.0/19 157.120.64.0/19 175.179.96.0/19 218.40.160.0/19 157.70.224.0/20 157.120.96.0/20 211.120.224.0/20 119.59.88.0/21 123.108.192.0/21 202.81.8.0/21 203.209.184.0/22
IPv6 prefixes
1 prefix- 2001:d28::/32
2001:d28::/32
Query AS9621 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=AS9621&key=YOUR_API_KEY"Any address in its prefixes resolves to AS9621, with or without a key:
curl "https://api.ipapi.is/?q=61.210.64.1"Largest networks in Japan
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