My IP address

Your IPv4, your IPv6, and what they say about your connection.

IPv4

216.73.216.184

Country
Location
Network
Reverse DNS

IPv6

Country
Location
Network
Reverse DNS

Checking…

For ip.alo.is, your browser picked IPv4.

From the command line

  • curl ip.alo.iswhichever family your system prefers
  • curl ipv4.alo.isforces IPv4
  • curl ipv6.alo.isforces IPv6
  • curl ip.alo.is/jsoneverything as JSON

Questions

What is my public IP address?

It is the address websites see when you visit them. It comes from your provider (home router, mobile network, VPN), and over IPv4 it is shared by every device behind the same router. The one shown here is the address our server sees.

Why two addresses, IPv4 and IPv6?

The internet runs two protocols side by side. IPv4 (like 203.0.113.42) ran out of addresses long ago; IPv6 (like 2001:db8::42) has enough for every device. Most recent connections have both and the browser picks one per site. This page asks a server reachable only over IPv4 and another reachable only over IPv6, so it can show both.

How do I know if I have IPv6?

Look at the IPv6 card at the top. If it shows an address, IPv6 works end to end. If it says “unavailable”, your provider does not offer it, your router has it turned off, or a network in between (VPN, office Wi-Fi) blocks it. From a terminal: curl ipv6.alo.is.

Is the location accurate?

No, it is an estimate from a public database (DB-IP). It often lands on your provider’s city rather than yours, and with a VPN or a mobile network it can be hundreds of kilometres off. It never gives a street address.

How do I get my IP from the command line?

curl ip.alo.is prints just the address, curl ipv4.alo.is and curl ipv6.alo.is force a family, and curl ip.alo.is/json returns everything as JSON, including a secure field that says whether the request came over HTTPS. Handy in scripts and on servers without a browser.

Do you keep my IP address?

No. Nothing is written to disk: the address stays in memory for a few minutes for rate limiting and the reverse DNS cache, then it is gone. No cookies, no analytics.