This page is about the use of this address on Wikipedia. If you want to read about the address itself, see localhost.

This IPv4 address,, along with the IPv6 address 0:0:0:0:0:0:0:1 (which redirects here), are registered to localhost, the loopback address from the local computer. All edits attributed to this IP (besides those resulting from a server misconfiguration in 2013 and another one in 2015) have been made by one of Wikimedia's system administrators.

Dear new users: This is not a testing space. Please experiment at Wikipedia:Sandbox.
Dear Wikipedians: Want to test user warnings? Visit User talk:Sandbox for user warnings.
Dear administrators: Never block this IP. If you block this IP, it may prevent legit edits.
If you need to practice blocking IP addresses, use (talk · contribs · block log) and 2001:DB8:10:0:0:0:0:1 (talk · contribs · block log) instead.

See alsoEdit