Autonomous System
AS58273 Broadband for the Rural North Limited.
ISPActiveUnited KingdomRIPE
AS58273 (B4RN-AS) is an ISP network operated by Broadband for the Rural North Limited. in United Kingdom, registered with RIPE. It has 33 IPv4 prefixes with 25,600 addresses and 21 IPv6 prefixes, which makes it the 5,985th largest of 82,283 active autonomous systems by IPv4 space.
IPv4 addresses25,600in 33 prefixes
IPv6 prefixes21≈ 8.5 × 10²⁹ addresses
Size rank#5,985of 82,283 active ASNs
Details
OrganizationBroadband for the Rural North Limited.
AS nameB4RN-AS
Websiteb4rn.org.uk
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactabuse@b4rn.org.uk
Registered2012-06-12
Last updated2025-04-30
IPv4 prefixes
33 prefixes · 25,600 addresses| Network | Addresses | First – last address |
|---|---|---|
| 88.97.120.0/21 | 2,048 | 88.97.120.0 – 88.97.127.255 |
| 88.97.128.0/21 | 2,048 | 88.97.128.0 – 88.97.135.255 |
| 88.97.136.0/21 | 2,048 | 88.97.136.0 – 88.97.143.255 |
| 5.83.12.0/22 | 1,024 | 5.83.12.0 – 5.83.15.255 |
| 88.97.112.0/22 | 1,024 | 88.97.112.0 – 88.97.115.255 |
| 88.97.116.0/22 | 1,024 | 88.97.116.0 – 88.97.119.255 |
| 88.97.128.0/22 | 1,024 | 88.97.128.0 – 88.97.131.255 |
| 88.97.132.0/22 | 1,024 | 88.97.132.0 – 88.97.135.255 |
| 88.97.144.0/22 | 1,024 | 88.97.144.0 – 88.97.147.255 |
| 88.97.148.0/22 | 1,024 | 88.97.148.0 – 88.97.151.255 |
| 88.97.152.0/22 | 1,024 | 88.97.152.0 – 88.97.155.255 |
| 148.252.24.0/22 | 1,024 | 148.252.24.0 – 148.252.27.255 |
| 148.252.28.0/22 | 1,024 | 148.252.28.0 – 148.252.31.255 |
| 185.89.32.0/22 | 1,024 | 185.89.32.0 – 185.89.35.255 |
| 185.243.104.0/22 | 1,024 | 185.243.104.0 – 185.243.107.255 |
| 5.83.8.0/23 | 512 | 5.83.8.0 – 5.83.9.255 |
| 5.83.10.0/23 | 512 | 5.83.10.0 – 5.83.11.255 |
| 148.252.16.0/23 | 512 | 148.252.16.0 – 148.252.17.255 |
| 148.252.18.0/23 | 512 | 148.252.18.0 – 148.252.19.255 |
| 148.252.20.0/23 | 512 | 148.252.20.0 – 148.252.21.255 |
| 148.252.22.0/23 | 512 | 148.252.22.0 – 148.252.23.255 |
| 185.201.34.0/23 | 512 | 185.201.34.0 – 185.201.35.255 |
| 194.31.184.0/23 | 512 | 194.31.184.0 – 194.31.185.255 |
| 194.113.44.0/23 | 512 | 194.113.44.0 – 194.113.45.255 |
| 194.113.46.0/23 | 512 | 194.113.46.0 – 194.113.47.255 |
88.97.120.0/21 88.97.128.0/21 88.97.136.0/21 5.83.12.0/22 88.97.112.0/22 88.97.116.0/22 88.97.128.0/22 88.97.132.0/22 88.97.144.0/22 88.97.148.0/22 88.97.152.0/22 148.252.24.0/22 148.252.28.0/22 185.89.32.0/22 185.243.104.0/22 5.83.8.0/23 5.83.10.0/23 148.252.16.0/23 148.252.18.0/23 148.252.20.0/23 148.252.22.0/23 185.201.34.0/23 194.31.184.0/23 194.113.44.0/23 194.113.46.0/23
The 25 largest of 33. The API and the database have all of them.
IPv6 prefixes
21 prefixes- 2a10:cb80::/29
- 2a01:6241:8000::/34
- 2a01:6242::/34
- 2a01:6242:8000::/34
- 2a01:6243::/34
- 2a01:6244::/34
- 2a01:6244:8000::/34
- 2a01:6245::/34
- 2a01:6246::/34
- 2a01:6247::/34
- 2a01:6247:8000::/34
- 2a10:cb81::/34
- 2a01:6240::/48
- 2a01:6240:19::/48
- 2a01:6240:22::/48
- 2a01:6240:23::/48
- 2a01:6240:24::/48
- 2a01:6240:26::/48
- 2a01:6240:30::/48
- 2a01:6240:80::/48
- 2a10:cb80::/48
2a10:cb80::/29 2a01:6241:8000::/34 2a01:6242::/34 2a01:6242:8000::/34 2a01:6243::/34 2a01:6244::/34 2a01:6244:8000::/34 2a01:6245::/34 2a01:6246::/34 2a01:6247::/34 2a01:6247:8000::/34 2a10:cb81::/34 2a01:6240::/48 2a01:6240:19::/48 2a01:6240:22::/48 2a01:6240:23::/48 2a01:6240:24::/48 2a01:6240:26::/48 2a01:6240:30::/48 2a01:6240:80::/48 2a10:cb80::/48
Query AS58273 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=AS58273&key=YOUR_API_KEY"Any address in its prefixes resolves to AS58273, with or without a key:
curl "https://api.ipapi.is/?q=88.97.120.1"