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Free IP and proxy tools

See what websites see: where an IP is, who owns it, whether databases flag it, and how your proxies really perform.

IP Lookup & Quality Check

Any IP against 30+ databases and lists: location, network owner, residential or datacenter, proxy and VPN flags, blacklists, WebRTC and timezone checks, and a trust score with fixes.

Check my IP

Proxy Checker

Paste up to 25 HTTP or SOCKS5 proxies. Every step timed, exit IP and type, sticky or rotating, anonymity, and real-site tests on Google, Instagram, TikTok and more.

Check proxies

IPv6 Compatibility Checker

Will a site work on IPv6 proxies? We test a real IPv6 connection, the hosts its logins and apps use, and show 50+ popular sites at a glance.

Check a site

Coming next

WebRTC & DNS leak test

Server-verified, with our own STUN and DNS servers.

ASN lookup

Every range an ASN owns, its type and history.

Bulk IP lookup

Up to 1,000 IPs to CSV in one go.

Blacklist check

One IP or a whole range against every free list.

IP range lookup

CIDR to IP list, owner and country per block.

My IP for scripts

curl catproxies.com/api/v1/tools/myip