- This page is about the use of this address on Wikimedia Foundation projects. If you want to read about the address itself, see localhost.
This IPv4 address, 127.0.0.1, 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 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.