Prefixes

The original prefixes award (WPX) is administered by CQ Magazine.

Some national awards are also available.

PX Indonesia
Worked Croatian Amateur Radio Prefixes (Croatia)
California Prefix Award (USA)
LY WPX Trophy (Lithuania)
Worked Slovenia Prefixes (Slovenia)
WPX Award (USA)

Please note that the awards listed above are just examples of my collection of nearly 3,000 certificates