Autonomous System
AS43872 Optinet U.K. Limited
ISPActiveUnited KingdomRIPE
AS43872 (OPTINET) is an ISP network operated by Optinet U.K. Limited in United Kingdom, registered with RIPE. It has 20 IPv4 prefixes with 10,496 addresses and 7 IPv6 prefixes, which makes it the 9,891st largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses10,496in 20 prefixes
IPv6 prefixes7≈ 4.4 × 10³⁰ addresses
Size rank#9,891of 82,200 active ASNs
Details
OrganizationOptinet U.K. Limited
AS nameOPTINET
Websiteoptinet.co.uk
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactabuse@optinet.co.uk
Registered2016-12-20
Last updated2025-11-28
IPv4 prefixes
20 prefixes · 10,496 addresses| Network | Addresses | First – last address |
|---|---|---|
| 89.222.48.0/21 | 2,048 | 89.222.48.0 – 89.222.55.255 |
| 5.253.252.0/22 | 1,024 | 5.253.252.0 – 5.253.255.255 |
| 89.222.56.0/22 | 1,024 | 89.222.56.0 – 89.222.59.255 |
| 185.183.20.0/22 | 1,024 | 185.183.20.0 – 185.183.23.255 |
| 185.253.176.0/22 | 1,024 | 185.253.176.0 – 185.253.179.255 |
| 89.222.60.0/23 | 512 | 89.222.60.0 – 89.222.61.255 |
| 89.222.62.0/23 | 512 | 89.222.62.0 – 89.222.63.255 |
| 45.136.108.0/24 | 256 | 45.136.108.0 – 45.136.108.255 |
| 84.38.246.0/24 | 256 | 84.38.246.0 – 84.38.246.255 |
| 91.201.105.0/24 | 256 | 91.201.105.0 – 91.201.105.255 |
| 92.118.111.0/24 | 256 | 92.118.111.0 – 92.118.111.255 |
| 176.101.169.0/24 | 256 | 176.101.169.0 – 176.101.169.255 |
| 185.187.61.0/24 | 256 | 185.187.61.0 – 185.187.61.255 |
| 193.105.189.0/24 | 256 | 193.105.189.0 – 193.105.189.255 |
| 193.247.94.0/24 | 256 | 193.247.94.0 – 193.247.94.255 |
| 193.247.101.0/24 | 256 | 193.247.101.0 – 193.247.101.255 |
| 193.247.103.0/24 | 256 | 193.247.103.0 – 193.247.103.255 |
| 193.247.165.0/24 | 256 | 193.247.165.0 – 193.247.165.255 |
| 195.234.28.0/24 | 256 | 195.234.28.0 – 195.234.28.255 |
| 217.198.183.0/24 | 256 | 217.198.183.0 – 217.198.183.255 |
89.222.48.0/21 5.253.252.0/22 89.222.56.0/22 185.183.20.0/22 185.253.176.0/22 89.222.60.0/23 89.222.62.0/23 45.136.108.0/24 84.38.246.0/24 91.201.105.0/24 92.118.111.0/24 176.101.169.0/24 185.187.61.0/24 193.105.189.0/24 193.247.94.0/24 193.247.101.0/24 193.247.103.0/24 193.247.165.0/24 195.234.28.0/24 217.198.183.0/24
IPv6 prefixes
7 prefixes- 2a0b:180::/29
- 2a0d:1e80::/29
- 2a10:c740::/29
- 2a10:c7c0::/29
- 2a10:c8c0::/29
- 2a10:c9c0::/29
- 2a10:cac0::/29
2a0b:180::/29 2a0d:1e80::/29 2a10:c740::/29 2a10:c7c0::/29 2a10:c8c0::/29 2a10:c9c0::/29 2a10:cac0::/29
Query AS43872 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=AS43872&key=YOUR_API_KEY"Any address in its prefixes resolves to AS43872, with or without a key:
curl "https://api.ipapi.is/?q=89.222.48.1"