All tools

IP Address Lookup

Enter an IP address to see country, ISP, and approximate location. Uses ip-api.com.

IP address e.g. 8.8.8.8 or 2001:db8::1

API / Network Tools

HTTP Header Inspector

Inspect status, headers, redirects, and CORS for any URL.

IP Subnet Calculator

Subnet mask, network, broadcast, host range from IP/CIDR.