Autonomous System
AS9002 RETN Limited
ISPActiveUnited KingdomRIPE
AS9002 (RETN-AS) is an ISP network operated by RETN Limited in United Kingdom, registered with RIPE. It has 14 IPv4 prefixes with 25,088 addresses and 1 IPv6 prefix, which makes it the 6,033rd largest of 82,534 active autonomous systems by IPv4 space.
IPv4 addresses25,088in 14 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#6,033of 82,534 active ASNs
Details
OrganizationRETN Limited
AS nameRETN-AS
Websiteretn.net
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactabuse@retn.net
Registered2008-03-25
Last updated2026-10-23
IPv4 prefixes
14 prefixes · 25,088 addresses| Network | Addresses | First – last address |
|---|---|---|
| 87.245.224.0/19 | 8,192 | 87.245.224.0 – 87.245.255.255 |
| 139.45.192.0/19 | 8,192 | 139.45.192.0 – 139.45.223.255 |
| 87.245.208.0/21 | 2,048 | 87.245.208.0 – 87.245.215.255 |
| 89.19.36.0/22 | 1,024 | 89.19.36.0 – 89.19.39.255 |
| 94.158.240.0/22 | 1,024 | 94.158.240.0 – 94.158.243.255 |
| 185.13.152.0/22 | 1,024 | 185.13.152.0 – 185.13.155.255 |
| 185.82.8.0/22 | 1,024 | 185.82.8.0 – 185.82.11.255 |
| 193.109.100.0/22 | 1,024 | 193.109.100.0 – 193.109.103.255 |
| 45.39.107.0/24 | 256 | 45.39.107.0 – 45.39.107.255 |
| 45.39.108.0/24 | 256 | 45.39.108.0 – 45.39.108.255 |
| 81.19.134.0/24 | 256 | 81.19.134.0 – 81.19.134.255 |
| 85.136.179.0/24 | 256 | 85.136.179.0 – 85.136.179.255 |
| 104.233.6.0/24 | 256 | 104.233.6.0 – 104.233.6.255 |
| 213.108.245.0/24 | 256 | 213.108.245.0 – 213.108.245.255 |
87.245.224.0/19 139.45.192.0/19 87.245.208.0/21 89.19.36.0/22 94.158.240.0/22 185.13.152.0/22 185.82.8.0/22 193.109.100.0/22 45.39.107.0/24 45.39.108.0/24 81.19.134.0/24 85.136.179.0/24 104.233.6.0/24 213.108.245.0/24
IPv6 prefixes
1 prefix- 2a02:2d8::/32
2a02:2d8::/32
Query AS9002 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=AS9002&key=YOUR_API_KEY"Any address in its prefixes resolves to AS9002, with or without a key:
curl "https://api.ipapi.is/?q=87.245.224.1"