User:127.0.0.1

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.^[1]

Note to new users: This is not a testing space. Please experiment at Wikipedia:Sandbox.
Note to Wikipedians: Want to test user warnings? Visit User talk:Sandbox for user warnings.
Note to administrators: Do not block this IP. Blocking it may prevent legitimate edits.
If you need to practice blocking IP addresses, use 192.0.2.16 (talk · contribs · block log) or 2001:DB8:10::1 (talk · contribs · block log) instead.

^ A configuration change in 2017 (phab:T154698) should prevent further unregistered edits from this address; however, configuration errors can still result in it being used by normal registered users. Several have occurred since 2017.

[1] A configuration change in 2017 (phab:T154698) should prevent further unregistered edits from this address; however, configuration errors can still result in it being used by normal registered users. Several have occurred since 2017.

[1]