MediaWiki:Titleblacklist

1. This is a title blacklist. Titles and users that match a regular expression here cannot be created.
2. Use "#" for comments.
3. This is case insensitive by default

1. Block all user accounts, and only permit those that match the MediaWiki:Titlewhitelistregex

.* <newaccountonly>

1. Block User1234

[A-Za-z]+[0-9]+ <newaccountonly>