I'm sorry for that silly question but I'm unable to make head or tail of the so far available guides and forum threads. A similar question has been asked by KD2UJ but is still unanswered.

I write and provide a contest post-processor software and I want to include QRZ.com XML access. The so far only purpose is to check if a callsign exists at QRZ.com or not.
  • Is the idea that just I have to sign up for that access and every user of my program can use the look-up feature?
  • Or is the idea that I just provide the option but only users with (paid) QRZ.com account can use it?


73 Frank DL8WAA