AS18180 TWNIC-AS
Taiwan Network Information Center
AS18180 is not on Fraudex's VPN, proxy and datacenter list, so its IPs are treated like ordinary home, mobile or business connections. A single address can still be flagged if it is a Tor exit relay.
Check an IP from AS18180
Look up any address in real time with the free IP checker, or from your own code:
curl "https://fraudex.xyz/api/check?ip=221.128.128.0" \ -H "X-API-Key: fx_your_key"
The answer includes the network (AS18180), 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 AS18180
| First IP | Last IP | CIDR | Addresses |
|---|---|---|---|
| 221.128.128.0 | 221.128.131.255 | 221.128.128.0/22 | 1,024 |
| 221.128.195.0 | 221.128.195.255 | 221.128.195.0/24 | 256 |
| 221.128.248.0 | 221.128.255.255 | 221.128.248.0/21 | 2,048 |
Questions about AS18180
Is AS18180 a VPN or hosting network?
Fraudex does not list AS18180 (TWNIC-AS) as a VPN, proxy or hosting network. Its addresses are treated as regular traffic, apart from any Tor exit relays.
Which country is AS18180 registered in?
AS18180 is registered in Taiwan. Individual addresses can be used elsewhere, so check the IP itself when location matters.
How many IP addresses does AS18180 have?
It announces 3 IPv4 ranges with 3,328 addresses in total.
How do I block traffic from AS18180?
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.