Autonomous System
AS17506 UCOM Corp.
ISPActiveJapanAPNIC
AS17506 (UCOM) is an ISP network operated by UCOM Corp. in Japan, registered with APNIC. It has 40 IPv4 prefixes with 5,508,096 addresses and 1 IPv6 prefix, which makes it the 123rd largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses5,508,096in 40 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#123of 82,200 active ASNs
Details
OrganizationUCOM Corp.
AS nameUCOM
Websiteucom.ne.jp
Country Japan (JP)
Network typeISP
RegistryAPNIC
Abuse contacthostmaster@nic.ad.jp
Registered—
Last updated2024-08-22
IPv4 prefixes
40 prefixes · 5,508,096 addresses| Network | Addresses | First – last address |
|---|---|---|
| 221.240.0.0/12 | 1,048,576 | 221.240.0.0 – 221.255.255.255 |
| 113.32.0.0/13 | 524,288 | 113.32.0.0 – 113.39.255.255 |
| 43.232.0.0/14 | 262,144 | 43.232.0.0 – 43.235.255.255 |
| 113.40.0.0/14 | 262,144 | 113.40.0.0 – 113.43.255.255 |
| 122.208.0.0/14 | 262,144 | 122.208.0.0 – 122.211.255.255 |
| 122.212.0.0/14 | 262,144 | 122.212.0.0 – 122.215.255.255 |
| 122.216.0.0/14 | 262,144 | 122.216.0.0 – 122.219.255.255 |
| 124.32.0.0/14 | 262,144 | 124.32.0.0 – 124.35.255.255 |
| 124.36.0.0/14 | 262,144 | 124.36.0.0 – 124.39.255.255 |
| 125.100.0.0/14 | 262,144 | 125.100.0.0 – 125.103.255.255 |
| 58.4.0.0/15 | 131,072 | 58.4.0.0 – 58.5.255.255 |
| 58.12.0.0/15 | 131,072 | 58.12.0.0 – 58.13.255.255 |
| 58.80.0.0/15 | 131,072 | 58.80.0.0 – 58.81.255.255 |
| 58.156.0.0/15 | 131,072 | 58.156.0.0 – 58.157.255.255 |
| 58.158.0.0/15 | 131,072 | 58.158.0.0 – 58.159.255.255 |
| 59.158.0.0/15 | 131,072 | 59.158.0.0 – 59.159.255.255 |
| 122.220.0.0/15 | 131,072 | 122.220.0.0 – 122.221.255.255 |
| 58.158.0.0/16 | 65,536 | 58.158.0.0 – 58.158.255.255 |
| 59.87.0.0/16 | 65,536 | 59.87.0.0 – 59.87.255.255 |
| 115.125.0.0/16 | 65,536 | 115.125.0.0 – 115.125.255.255 |
| 219.120.0.0/16 | 65,536 | 219.120.0.0 – 219.120.255.255 |
| 219.123.0.0/16 | 65,536 | 219.123.0.0 – 219.123.255.255 |
| 220.151.0.0/16 | 65,536 | 220.151.0.0 – 220.151.255.255 |
| 220.218.0.0/16 | 65,536 | 220.218.0.0 – 220.218.255.255 |
| 221.112.0.0/16 | 65,536 | 221.112.0.0 – 221.112.255.255 |
221.240.0.0/12 113.32.0.0/13 43.232.0.0/14 113.40.0.0/14 122.208.0.0/14 122.212.0.0/14 122.216.0.0/14 124.32.0.0/14 124.36.0.0/14 125.100.0.0/14 58.4.0.0/15 58.12.0.0/15 58.80.0.0/15 58.156.0.0/15 58.158.0.0/15 59.158.0.0/15 122.220.0.0/15 58.158.0.0/16 59.87.0.0/16 115.125.0.0/16 219.120.0.0/16 219.123.0.0/16 220.151.0.0/16 220.218.0.0/16 221.112.0.0/16
The 25 largest of 40. The API and the database have all of them.
IPv6 prefixes
1 prefix- 2405:f800::/32
2405:f800::/32
Query AS17506 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=AS17506&key=YOUR_API_KEY"Any address in its prefixes resolves to AS17506, with or without a key:
curl "https://api.ipapi.is/?q=221.240.0.1"Largest networks in Japan
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