Autonomous System
AS4713 NTT DOCOMO BUSINESS,Inc.
ISPActiveJapanJPNIC
AS4713 (OCN) is an ISP network operated by NTT DOCOMO BUSINESS,Inc. in Japan, registered with JPNIC. It has 181 IPv4 prefixes with 28,624,896 addresses and 5 IPv6 prefixes, which makes it the 20th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses28,624,896in 181 prefixes
IPv6 prefixes5≈ 8.1 × 10³¹ addresses
Size rank#20of 82,200 active ASNs
Details
OrganizationNTT DOCOMO BUSINESS,Inc.
AS nameOCN
Websitentt.com
Country Japan (JP)
Network typeISP
RegistryJPNIC
Abuse contact—
Registered—
Last updated2025-10-20
IPv4 prefixes
181 prefixes · 28,624,896 addresses| Network | Addresses | First – last address |
|---|---|---|
| 153.128.0.0/10 | 4,194,304 | 153.128.0.0 – 153.191.255.255 |
| 180.0.0.0/10 | 4,194,304 | 180.0.0.0 – 180.63.255.255 |
| 114.160.0.0/11 | 2,097,152 | 114.160.0.0 – 114.191.255.255 |
| 153.192.0.0/11 | 2,097,152 | 153.192.0.0 – 153.223.255.255 |
| 60.32.0.0/12 | 1,048,576 | 60.32.0.0 – 60.47.255.255 |
| 114.144.0.0/12 | 1,048,576 | 114.144.0.0 – 114.159.255.255 |
| 118.0.0.0/12 | 1,048,576 | 118.0.0.0 – 118.15.255.255 |
| 122.16.0.0/12 | 1,048,576 | 122.16.0.0 – 122.31.255.255 |
| 153.224.0.0/12 | 1,048,576 | 153.224.0.0 – 153.239.255.255 |
| 58.88.0.0/13 | 524,288 | 58.88.0.0 – 58.95.255.255 |
| 118.16.0.0/13 | 524,288 | 118.16.0.0 – 118.23.255.255 |
| 121.112.0.0/13 | 524,288 | 121.112.0.0 – 121.119.255.255 |
| 123.216.0.0/13 | 524,288 | 123.216.0.0 – 123.223.255.255 |
| 124.96.0.0/13 | 524,288 | 124.96.0.0 – 124.103.255.255 |
| 125.200.0.0/13 | 524,288 | 125.200.0.0 – 125.207.255.255 |
| 153.240.0.0/13 | 524,288 | 153.240.0.0 – 153.247.255.255 |
| 219.160.0.0/13 | 524,288 | 219.160.0.0 – 219.167.255.255 |
| 220.104.0.0/13 | 524,288 | 220.104.0.0 – 220.111.255.255 |
| 221.184.0.0/13 | 524,288 | 221.184.0.0 – 221.191.255.255 |
| 222.144.0.0/13 | 524,288 | 222.144.0.0 – 222.151.255.255 |
| 123.224.0.0/14 | 262,144 | 123.224.0.0 – 123.227.255.255 |
| 124.84.0.0/14 | 262,144 | 124.84.0.0 – 124.87.255.255 |
| 125.172.0.0/14 | 262,144 | 125.172.0.0 – 125.175.255.255 |
| 153.248.0.0/14 | 262,144 | 153.248.0.0 – 153.251.255.255 |
| 210.160.0.0/14 | 262,144 | 210.160.0.0 – 210.163.255.255 |
153.128.0.0/10 180.0.0.0/10 114.160.0.0/11 153.192.0.0/11 60.32.0.0/12 114.144.0.0/12 118.0.0.0/12 122.16.0.0/12 153.224.0.0/12 58.88.0.0/13 118.16.0.0/13 121.112.0.0/13 123.216.0.0/13 124.96.0.0/13 125.200.0.0/13 153.240.0.0/13 219.160.0.0/13 220.104.0.0/13 221.184.0.0/13 222.144.0.0/13 123.224.0.0/14 124.84.0.0/14 125.172.0.0/14 153.248.0.0/14 210.160.0.0/14
The 25 largest of 181. The API and the database have all of them.
IPv6 prefixes
5 prefixes- 2400:4000::/22
- 2001:380::/32
- 2400:7800::/32
- 2001:380:4::/48
- 2407:a800:3e12::/48
2400:4000::/22 2001:380::/32 2400:7800::/32 2001:380:4::/48 2407:a800:3e12::/48
Query AS4713 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=AS4713&key=YOUR_API_KEY"Any address in its prefixes resolves to AS4713, with or without a key:
curl "https://api.ipapi.is/?q=153.128.0.1"Other networks of NTT DOCOMO BUSINESS,Inc.
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