Autonomous System
AS51263 County Broadband Ltd
ISPActiveUnited KingdomRIPE
AS51263 (COUNTYBB) is an ISP network operated by County Broadband Ltd in United Kingdom, registered with RIPE. It has 14 IPv4 prefixes with 20,480 addresses and 1 IPv6 prefix, which makes it the 6,788th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses20,480in 14 prefixes
IPv6 prefixes1≈ 6.3 × 10²⁹ addresses
Size rank#6,788of 82,200 active ASNs
Details
OrganizationCounty Broadband Ltd
AS nameCOUNTYBB
Websitecountybroadband.co.uk
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactripe@countybroadband.net
Registered2010-07-05
Last updated2026-05-14
IPv4 prefixes
14 prefixes · 20,480 addresses| Network | Addresses | First – last address |
|---|---|---|
| 168.86.192.0/19 | 8,192 | 168.86.192.0 – 168.86.223.255 |
| 62.56.176.0/20 | 4,096 | 62.56.176.0 – 62.56.191.255 |
| 136.148.152.0/21 | 2,048 | 136.148.152.0 – 136.148.159.255 |
| 213.244.200.0/21 | 2,048 | 213.244.200.0 – 213.244.207.255 |
| 185.25.56.0/22 | 1,024 | 185.25.56.0 – 185.25.59.255 |
| 185.164.180.0/22 | 1,024 | 185.164.180.0 – 185.164.183.255 |
| 178.251.176.0/24 | 256 | 178.251.176.0 – 178.251.176.255 |
| 178.251.177.0/24 | 256 | 178.251.177.0 – 178.251.177.255 |
| 178.251.178.0/24 | 256 | 178.251.178.0 – 178.251.178.255 |
| 178.251.179.0/24 | 256 | 178.251.179.0 – 178.251.179.255 |
| 178.251.180.0/24 | 256 | 178.251.180.0 – 178.251.180.255 |
| 178.251.181.0/24 | 256 | 178.251.181.0 – 178.251.181.255 |
| 178.251.182.0/24 | 256 | 178.251.182.0 – 178.251.182.255 |
| 178.251.183.0/24 | 256 | 178.251.183.0 – 178.251.183.255 |
168.86.192.0/19 62.56.176.0/20 136.148.152.0/21 213.244.200.0/21 185.25.56.0/22 185.164.180.0/22 178.251.176.0/24 178.251.177.0/24 178.251.178.0/24 178.251.179.0/24 178.251.180.0/24 178.251.181.0/24 178.251.182.0/24 178.251.183.0/24
IPv6 prefixes
1 prefix- 2a0b:4c00::/29
2a0b:4c00::/29
Query AS51263 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=AS51263&key=YOUR_API_KEY"Any address in its prefixes resolves to AS51263, with or without a key:
curl "https://api.ipapi.is/?q=168.86.192.1"