| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C C C | BD1IIJ | 498 | 30.84 % | | 735 | 26.13 % | | | 2 | C C D C C | AA0FO | 438 | 27.12 % | | 735 | 26.13 % | | | 3 | C C D C | AB1J | 218 | 13.50 % | | 458 | 16.28 % | | | 4 | C D C C C | F1ADG | 178 | 11.02 % | | 229 | 8.14 % | | | 5 | C D C C | E7CW | 106 | 6.56 % | | 192 | 6.83 % | | | 6 | D C D C C | 4K7RF | 42 | 2.60 % | | 91 | 3.23 % | | | 7 | C D D C | E70T | 34 | 2.11 % | | 87 | 3.09 % | | | 8 | C D D C C | E73KV | 25 | 1.55 % | | 34 | 1.21 % | | | 9 | D C D C | 4L8A | 24 | 1.49 % | | 78 | 2.77 % | | | 10 | D C D C C C | 2E0CVN | 16 | 0.99 % | | 41 | 1.46 % | | | 11 | C D C | D4M | 8 | 0.50 % | | 18 | 0.64 % | | | 12 | C C D / C C D C C | EA5/DK5AN | 4 | 0.25 % | | 14 | 0.50 % | | | 13 | C D D C C C | E21EIC | 3 | 0.19 % | | 11 | 0.39 % | | | 14 | C C D D D C C | DM800KM | 2 | 0.12 % | | 4 | 0.14 % | | | 15 | C C D D C C C | DL50OHM | 2 | 0.12 % | | 2 | 0.07 % | | | 16 | C D C C / D | R0RG/9 | 2 | 0.12 % | | 2 | 0.07 % | | | 17 | D C D D D C | 9A925T | 1 | 0.06 % | | 6 | 0.21 % | | | 18 | C C D C C C / C | EA2AOO/P | 1 | 0.06 % | | 3 | 0.11 % | | | 19 | C C / C D C C | DL/K3LR | 1 | 0.06 % | | 2 | 0.07 % | | | 20 | C C D C C / C C C | EA1GT/QRP | 1 | 0.06 % | | 3 | 0.11 % | | | 21 | C C / C C D C C | ER/UR7FM | 1 | 0.06 % | | 2 | 0.07 % | | | 22 | D C / C D C C | 9A/W3WM | 1 | 0.06 % | | 4 | 0.14 % | | | 23 | C D C C C / C C | M0DHS/MM | 1 | 0.06 % | | 1 | 0.04 % | | | 24 | C D C C C / C C C | M3ZDV/QRP | 1 | 0.06 % | | 1 | 0.04 % | | | 25 | C C D D C C C C | OL25YOTA | 1 | 0.06 % | | 1 | 0.04 % | | | 26 | C C / D C D C C | OY/4X6TT | 1 | 0.06 % | | 1 | 0.04 % | | | 27 | C C D / C C D C C C | EA6/GM3ZDH | 1 | 0.06 % | | 4 | 0.14 % | | | 28 | C D D C C C C | R73YOTA | 1 | 0.06 % | | 1 | 0.04 % | | | 29 | C C D C C / D | RD7LB/3 | 1 | 0.06 % | | 2 | 0.07 % | | | 30 | C C D C / C | RV3X/P | 1 | 0.06 % | | 1 | 0.04 % | | | 31 | C C D D D C | ZL100C | 1 | 0.06 % | | 1 | 0.04 % | |
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