In recognition of international two-way amateur radio communication, the International Amateur Radio Union (IARU) issues Worked-All-Continents (WAC) certificates to amateur radio stations of the world.

Qualification for the WAC award is based on an examination by the International Secretariat, or a member-society, of the IARU of QSL cards that the applicant has received from other amateur stations in each of the six continental areas of the world. All contacts must be made from the same country or separate territory within the same continental area of the world.

All QSL cards (no photocopies) must show the mode and/or band for any endorsement applied for.

Contacts made on 10/18/24 MHz or via satellites are void for the 5-band certificate and 6-band endorsement. All contacts for the QRP endorsement must be made on or after January 1, 1985 while running a maximum power of 5 watts output or 10 watts input.

The following information should be helpful in determining the continental area of a station located adjacent to a continental boundary.

• North America includes Greenland (OX) and Panama (HP).
• South America includes Trinidad & Tobago (9Y), Aruba (P4), Curacao & Bonaire (PJ2-4) and Easter Island (CE0).
• Oceania includes Minami Torishima (JD1), Philippines (DU), Eastern Malaysia (9M6-8) and Indonesia (YB).
• Asia includes Ogasawara Islands (JD1), Maldives (8Q), Cyprus (5B, ZC4), Eastern Turkey (TA2-9) and Georgia (4L).
• Europe includes the fourth and sixth call areas of Russia (R1-6), Istanbul (TA1), all Italian islands (I) and Azores (CU).
• Africa includes Ceuta & Melilla (EA9), Madeira (CT3), Gan Island (8Q), French Austral Territory (FT) and Heard Island (VK0).