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What is my IP

public API

IPv4 and IPv6 address, reverse DNS, location and provider.

Read more: How to check whether a port is open (e.g. after port forwarding on a router)

More toolsWhois and ASN lookup BGP looking glass IPv4 subnet calculator IPv6 subnet calculator DNS lookup

Tools

Addressing

Domains and certificates

Internet

Server-side diagnostics

Content

Information

Where the data comes from

Calculators run in your browser. DNS, whois and BGP use public services, and the tests marked “server” (SSL/TLS, ports, traceroute, MTU, DNSBL) run from the routing.pl server.