Logbook of the World
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For DXpeditions

Request and accept a Callsign Certificate for your DXpedition's primary callsign. If your DXpedition uses more than one callsign, then request and accept additional Callsign Certificates for those callsigns; when requesting an addtional Callsign Certificate, specify your DXpedition's primary callsign in step 3.e.2.

To obtain a Callsign Certificate for your DXpedition's primary callsign, you may be required to submit your authorization to operate Amateur Radio. For certain DXCC entities, submission of a Landing Permit and/or Proof of Entry is also required.