AS24971 MASTER-AS
Czech Republic www.master.cz
Fraudex lists AS24971 as infrastructure that real customers rarely browse from: servers, VPN exits, proxies or bot networks. Every IP announced by this network comes back from /api/check with "is_bot": true.
Check an IP from AS24971
Look up any address in real time with the free IP checker, or from your own code:
curl "https://fraudex.xyz/api/check?ip=5.180.200.0" \ -H "X-API-Key: fx_your_key"
The answer includes the network (AS24971), the country and a VPN, proxy, Tor and bot verdict, in under a millisecond. Plans start at $40 for 30 days of unlimited lookups.
IPv4 ranges announced by AS24971
| First IP | Last IP | CIDR | Addresses |
|---|---|---|---|
| 5.180.200.0 | 5.180.203.255 | 5.180.200.0/22 | 1,024 |
| 37.140.220.0 | 37.140.220.255 | 37.140.220.0/24 | 256 |
| 37.205.8.0 | 37.205.15.255 | 37.205.8.0/21 | 2,048 |
| 77.93.192.0 | 77.93.223.255 | 77.93.192.0/19 | 8,192 |
| 80.79.16.0 | 80.79.31.255 | 80.79.16.0/20 | 4,096 |
| 81.31.32.0 | 81.31.47.255 | 81.31.32.0/20 | 4,096 |
| 83.167.224.0 | 83.167.255.255 | 83.167.224.0/19 | 8,192 |
| 83.223.52.0 | 83.223.52.255 | 83.223.52.0/24 | 256 |
| 85.118.128.0 | 85.118.135.255 | 85.118.128.0/21 | 2,048 |
| 89.185.224.0 | 89.185.255.255 | 89.185.224.0/19 | 8,192 |
| 91.213.160.0 | 91.213.160.255 | 91.213.160.0/24 | 256 |
| 91.214.192.0 | 91.214.195.255 | 91.214.192.0/22 | 1,024 |
| 91.216.179.0 | 91.216.179.255 | 91.216.179.0/24 | 256 |
| 91.226.216.0 | 91.226.219.255 | 91.226.216.0/22 | 1,024 |
| 92.63.56.0 | 92.63.56.255 | 92.63.56.0/24 | 256 |
| 130.193.16.0 | 130.193.16.255 | 130.193.16.0/24 | 256 |
| 149.62.144.0 | 149.62.151.255 | 149.62.144.0/21 | 2,048 |
| 176.227.168.0 | 176.227.169.255 | 176.227.168.0/23 | 512 |
| 178.238.32.0 | 178.238.47.255 | 178.238.32.0/20 | 4,096 |
| 185.8.164.0 | 185.8.167.255 | 185.8.164.0/22 | 1,024 |
| 185.25.184.0 | 185.25.187.255 | 185.25.184.0/22 | 1,024 |
| 185.32.160.0 | 185.32.160.255 | 185.32.160.0/24 | 256 |
| 185.58.40.0 | 185.58.43.255 | 185.58.40.0/22 | 1,024 |
| 185.85.164.0 | 185.85.167.255 | 185.85.164.0/22 | 1,024 |
| 185.145.160.0 | 185.145.163.255 | 185.145.160.0/22 | 1,024 |
| 185.239.216.0 | 185.239.219.255 | 185.239.216.0/22 | 1,024 |
| 188.213.234.0 | 188.213.235.255 | 188.213.234.0/23 | 512 |
| 188.215.18.0 | 188.215.19.255 | 188.215.18.0/23 | 512 |
| 193.169.160.0 | 193.169.161.255 | 193.169.160.0/23 | 512 |
| 194.145.180.0 | 194.145.183.255 | 194.145.180.0/22 | 1,024 |
| 195.140.252.0 | 195.140.255.255 | 195.140.252.0/22 | 1,024 |
IPv6 ranges announced by AS24971
| First IP | Last IP | CIDR |
|---|---|---|
| 2001:678:a50:: | 2001:678:a50:ffff:ffff:ffff:ffff:ffff | 2001:678:a50::/48 |
| 2001:67c:68:: | 2001:67c:68:ffff:ffff:ffff:ffff:ffff | 2001:67c:68::/48 |
| 2a00:8220:: | 2a00:8220:ffff:ffff:ffff:ffff:ffff:ffff | 2a00:8220::/32 |
| 2a00:a5a0:: | 2a00:a5a0:ffff:ffff:ffff:ffff:ffff:ffff | 2a00:a5a0::/32 |
| 2a01:430:: | 2a01:430:10:ffff:ffff:ffff:ffff:ffff | 2a01:430::/44, 2a01:430:10::/48 |
| 2a01:430:12:: | 2a01:430:ffff:ffff:ffff:ffff:ffff:ffff | 2a01:430:12::/47, 2a01:430:14::/46, 2a01:430:18::/45, 2a01:430:20::/43 +10 |
| 2a03:3b40:: | 2a03:3b40:3ff:ffff:ffff:ffff:ffff:ffff | 2a03:3b40::/38 |
| 2a03:7460:: | 2a03:7460:ffff:ffff:ffff:ffff:ffff:ffff | 2a03:7460::/32 |
| 2a04:16c0:200:: | 2a04:16c0:200:ffff:ffff:ffff:ffff:ffff | 2a04:16c0:200::/48 |
| 2a07:4880:: | 2a07:4887:ffff:ffff:ffff:ffff:ffff:ffff | 2a07:4880::/29 |
| 2a0b:3240:: | 2a0b:3240:ffff:ffff:ffff:ffff:ffff:ffff | 2a0b:3240::/32 |
| 2a0c:6380:: | 2a0c:6387:ffff:ffff:ffff:ffff:ffff:ffff | 2a0c:6380::/29 |
Questions about AS24971
Is AS24971 a VPN or hosting network?
Yes. Fraudex lists AS24971 (MASTER-AS) among the hosting, VPN, proxy and bot networks it flags, so visitors from it are usually servers or people hiding their real location rather than ordinary customers.
Which country is AS24971 registered in?
AS24971 is registered in Czechia. Individual addresses can be used elsewhere, so check the IP itself when location matters.
How many IP addresses does AS24971 have?
It announces 31 IPv4 ranges with 58,112 addresses in total, plus 12 IPv6 ranges.
How do I block traffic from AS24971?
Blocking a whole network by number goes stale as ranges change hands. It is more reliable to check each visitor's IP when they sign up, log in or pay: the Fraudex API returns the network and a VPN and bot verdict, so you can block, challenge or just log flagged traffic. See why an IP blocking API pays for itself.