AS54203 NETPROTECT-SP
Fraudex lists AS54203 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 AS54203
Look up any address in real time with the free IP checker, or from your own code:
curl "https://fraudex.xyz/api/check?ip=173.255.172.0" \ -H "X-API-Key: fx_your_key"
The answer includes the network (AS54203), 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 AS54203
| First IP | Last IP | CIDR | Addresses |
|---|---|---|---|
| 173.255.172.0 | 173.255.172.255 | 173.255.172.0/24 | 256 |
| 209.107.212.0 | 209.107.212.255 | 209.107.212.0/24 | 256 |
IPv6 ranges announced by AS54203
| First IP | Last IP | CIDR |
|---|---|---|
| 2604:fc80:4400:: | 2604:fc80:44ff:ffff:ffff:ffff:ffff:ffff | 2604:fc80:4400::/40 |
Questions about AS54203
Is AS54203 a VPN or hosting network?
Yes. Fraudex lists AS54203 (NETPROTECT-SP) 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 AS54203 registered in?
AS54203 is registered in United States. Individual addresses can be used elsewhere, so check the IP itself when location matters.
How many IP addresses does AS54203 have?
It announces 2 IPv4 ranges with 512 addresses in total, plus 1 IPv6 range.
How do I block traffic from AS54203?
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.