Welcome! This website is a great resource for all of your IP needs. What is My Public IP has three things we want to help you with: Determining your external-facing IP address WhoIs Lookup Internet Speed Connection Test In addition, this website is chockfull of information about IP addresses, the Internet, domain names, and more. We want to be your resource for anything IP related. Our homepage is where you will find what your public IP address is. There is also information there that outlines what an IP address is and why it matters. Next is our Whois Lookup page.