Free IP & Network Tools
Every tool on CheckPublicIP.com in one place — all free, instant, and running right in your browser with no sign-up.
IP Address Lookup
Find the location, ISP, ASN, and timezone of any public IPv4 or IPv6 address.
IPv4 Address Checker
See your public IPv4 address and whether your connection supports IPv4.
IPv6 Test
Check whether your connection supports IPv6 and see your public IPv6 address.
WebRTC Leak Test
Test whether WebRTC exposes a public IP address that differs from your VPN IP.
VPN Test
Heuristic check for VPN or datacenter signals: timezone mismatch and network organization.
Reverse DNS Lookup
Find the PTR hostname of any IPv4 or IPv6 address using DNS over HTTPS.
ASN Lookup
Find the autonomous system number, organization, and ISP behind any IP address.
Not sure where to start?
To simply see your own address, use the IP checker on the homepage. If you use a VPN, run the VPN test and the WebRTC leak test together. For background reading, see what an IP address is and public vs private IP addresses.