If you got a malformed URL with a query string not starting with a question mark, this Apache rule will catch it and make a redirection, replacing the first ampersand with the mandatory question mark for a query string. The negative lookahead will make sure that it don't replaces a well formed quer...

\s\-\d\s(\.|\,)\d\s\+\s\-\d\s(\.\,)\s*\d

This REGEX verifies the callsign and splits it up in several parts so it is possible to retrieve the prefix. All additions to the callsign (like /P, /M,..) and prepositions like other DXCC identifier (like DL/ON7BS) will be retrieved. The only DXCC that won't work if found so far is swaziland (pref...

Regex for NFDC