| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C | CJ3A | 193 | 39.79 % | | 262 | 44.26 % | | | 2 | C C D C C | AB3CX | 112 | 23.09 % | | 131 | 22.13 % | | | 3 | C C D C C C | DL1SVA | 54 | 11.13 % | | 59 | 9.97 % | | | 4 | C D C C | E7DX | 39 | 8.04 % | | 40 | 6.76 % | | | 5 | C D C C C | F1EBN | 23 | 4.74 % | | 24 | 4.05 % | | | 6 | C D D C | P33W | 17 | 3.51 % | | 21 | 3.55 % | | | 7 | D C D C | 3Z1K | 13 | 2.68 % | | 15 | 2.53 % | | | 8 | C D C | C4W | 13 | 2.68 % | | 14 | 2.36 % | | | 9 | C D D C C | S51MA | 11 | 2.27 % | | 16 | 2.70 % | | | 10 | D C D C C | 4Z4AK | 4 | 0.82 % | | 4 | 0.68 % | | | 11 | C C D C C C C | DK0WRTC | 1 | 0.21 % | | 1 | 0.17 % | | | 12 | C C D D C | OG55W | 1 | 0.21 % | | 1 | 0.17 % | | | 13 | C C D D D D C C C C C C OM2015TITANIC | 1 | 0.21 % | | 1 | 0.17 % | | | | 14 | C C D C C C / D | IZ8JFL/1 | 1 | 0.21 % | | 1 | 0.17 % | | | 15 | C D D D C C C C | E790IARU | 1 | 0.21 % | | 1 | 0.17 % | | | 16 | C D D C C C | S59ABC | 1 | 0.21 % | | 1 | 0.17 % | |
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