Regular Expressions

Here you can search the records in the database and have an opportunity to review, comment on, vote on existing records, and/or check if entries already match your requirements. If you have an issue with any of the entries, and you are the responsible party for the network it matches, please feel free to use the 'challenge' link on the left menu. Or you can use the comment link beside the entry, to suggest changes, modifications, support or opposition

You can also use the 'Hostname block checker' to see if any existing entries already would catch a specific address.

Search/Check Tool