Manual:$wgAccountCreationThrottle/es

Detalles
Limit to the number of accounts which may be created within a 24-hour period from a single IP address (whether by unregistered or registered user), 0 to disable.

Account creations from users with the  right (or in the deprecated   group) aren't counted.

Está configurado en 6 en los wikis de la Fundación Wikimedia. must be set to a value other than  for this setting to work.