Autonomous System
AS204339 FIRST SERVER LIMITED
HostingActiveUnited KingdomRIPE
AS204339 (FIRSTSERVER-FL-AS) is a hosting network operated by FIRST SERVER LIMITED in United Kingdom, registered with RIPE. It has 51 IPv4 prefixes with 13,056 addresses and 2 IPv6 prefixes, which makes it the 8,869th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses13,056in 51 prefixes
IPv6 prefixes2≈ 2.4 × 10²⁴ addresses
Size rank#8,869of 82,200 active ASNs
Details
OrganizationFIRST SERVER LIMITED
AS nameFIRSTSERVER-FL-AS
Websitefirstbyte.pro
Country United Kingdom (GB)
Network typeHosting
RegistryRIPE
Abuse contactaudit@first-server.net
Registered2022-06-28
Last updated2026-03-26
IPv4 prefixes
51 prefixes · 13,056 addresses| Network | Addresses | First – last address |
|---|---|---|
| 45.9.72.0/24 | 256 | 45.9.72.0 – 45.9.72.255 |
| 45.138.73.0/24 | 256 | 45.138.73.0 – 45.138.73.255 |
| 45.138.74.0/24 | 256 | 45.138.74.0 – 45.138.74.255 |
| 46.8.96.0/24 | 256 | 46.8.96.0 – 46.8.96.255 |
| 46.8.178.0/24 | 256 | 46.8.178.0 – 46.8.178.255 |
| 46.8.179.0/24 | 256 | 46.8.179.0 – 46.8.179.255 |
| 46.8.218.0/24 | 256 | 46.8.218.0 – 46.8.218.255 |
| 46.17.105.0/24 | 256 | 46.17.105.0 – 46.17.105.255 |
| 83.147.194.0/24 | 256 | 83.147.194.0 – 83.147.194.255 |
| 91.186.208.0/24 | 256 | 91.186.208.0 – 91.186.208.255 |
| 91.186.209.0/24 | 256 | 91.186.209.0 – 91.186.209.255 |
| 91.186.210.0/24 | 256 | 91.186.210.0 – 91.186.210.255 |
| 91.186.211.0/24 | 256 | 91.186.211.0 – 91.186.211.255 |
| 91.186.220.0/24 | 256 | 91.186.220.0 – 91.186.220.255 |
| 91.186.221.0/24 | 256 | 91.186.221.0 – 91.186.221.255 |
| 91.186.222.0/24 | 256 | 91.186.222.0 – 91.186.222.255 |
| 91.186.223.0/24 | 256 | 91.186.223.0 – 91.186.223.255 |
| 91.217.76.0/24 | 256 | 91.217.76.0 – 91.217.76.255 |
| 95.81.93.0/24 | 256 | 95.81.93.0 – 95.81.93.255 |
| 95.81.119.0/24 | 256 | 95.81.119.0 – 95.81.119.255 |
| 95.81.120.0/24 | 256 | 95.81.120.0 – 95.81.120.255 |
| 95.214.9.0/24 | 256 | 95.214.9.0 – 95.214.9.255 |
| 104.128.131.0/24 | 256 | 104.128.131.0 – 104.128.131.255 |
| 132.243.20.0/24 | 256 | 132.243.20.0 – 132.243.20.255 |
| 132.243.21.0/24 | 256 | 132.243.21.0 – 132.243.21.255 |
45.9.72.0/24 45.138.73.0/24 45.138.74.0/24 46.8.96.0/24 46.8.178.0/24 46.8.179.0/24 46.8.218.0/24 46.17.105.0/24 83.147.194.0/24 91.186.208.0/24 91.186.209.0/24 91.186.210.0/24 91.186.211.0/24 91.186.220.0/24 91.186.221.0/24 91.186.222.0/24 91.186.223.0/24 91.217.76.0/24 95.81.93.0/24 95.81.119.0/24 95.81.120.0/24 95.214.9.0/24 104.128.131.0/24 132.243.20.0/24 132.243.21.0/24
The 25 largest of 51. The API and the database have all of them.
IPv6 prefixes
2 prefixes- 2a04:5200:68::/48
- 2a04:5201:2::/48
2a04:5200:68::/48 2a04:5201:2::/48
Query AS204339 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=AS204339&key=YOUR_API_KEY"Any address in its prefixes resolves to AS204339, with or without a key:
curl "https://api.ipapi.is/?q=45.9.72.1"Other networks of FIRST SERVER LIMITED
AS200740 FIRST SERVER LIMITED26,880 IPv4 addressesAS205090 FIRST SERVER LIMITED16,640 IPv4 addressesAS204997 FIRST SERVER LIMITED16,384 IPv4 addresses