Autonomous System
AS21396 NetConnex Broadband Ltd.
ISPActiveUnited KingdomRIPE
AS21396 (NETCONNEX) is an ISP network operated by NetConnex Broadband Ltd. in United Kingdom, registered with RIPE. It has 9 IPv4 prefixes with 11,264 addresses and 4 IPv6 prefixes, which makes it the 9,532nd largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses11,264in 9 prefixes
IPv6 prefixes4≈ 1.3 × 10³⁰ addresses
Size rank#9,532of 82,200 active ASNs
Details
OrganizationNetConnex Broadband Ltd.
AS nameNETCONNEX
Websitencuk.net
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactabuse@ncuk.net
Registered2002-09-17
Last updated2026-09-09
IPv4 prefixes
9 prefixes · 11,264 addresses| Network | Addresses | First – last address |
|---|---|---|
| 80.249.96.0/20 | 4,096 | 80.249.96.0 – 80.249.111.255 |
| 141.0.208.0/20 | 4,096 | 141.0.208.0 – 141.0.223.255 |
| 5.182.220.0/22 | 1,024 | 5.182.220.0 – 5.182.223.255 |
| 193.203.210.0/23 | 512 | 193.203.210.0 – 193.203.211.255 |
| 194.117.248.0/23 | 512 | 194.117.248.0 – 194.117.249.255 |
| 5.182.220.0/24 | 256 | 5.182.220.0 – 5.182.220.255 |
| 77.95.218.0/24 | 256 | 77.95.218.0 – 77.95.218.255 |
| 193.223.78.0/24 | 256 | 193.223.78.0 – 193.223.78.255 |
| 194.180.187.0/24 | 256 | 194.180.187.0 – 194.180.187.255 |
80.249.96.0/20 141.0.208.0/20 5.182.220.0/22 193.203.210.0/23 194.117.248.0/23 5.182.220.0/24 77.95.218.0/24 193.223.78.0/24 194.180.187.0/24
IPv6 prefixes
4 prefixes- 2a02:68::/29
- 2a05:98c0::/29
- 2a02:68::/32
- 2a13:f040::/48
2a02:68::/29 2a05:98c0::/29 2a02:68::/32 2a13:f040::/48
Query AS21396 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=AS21396&key=YOUR_API_KEY"Any address in its prefixes resolves to AS21396, with or without a key:
curl "https://api.ipapi.is/?q=80.249.96.1"