| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C | AA1K | 259 | 34.72 % | | 417 | 37.70 % | | | 2 | C C D C C | AA1ON | 152 | 20.38 % | | 202 | 18.26 % | | | 3 | C C D C C C | DH0GHU | 124 | 16.62 % | | 146 | 13.20 % | | | 4 | C D C C | E7AA | 110 | 14.75 % | | 208 | 18.81 % | | | 5 | C D C C C | C6AGU | 28 | 3.75 % | | 39 | 3.53 % | | | 6 | C D D C | E70X | 21 | 2.82 % | | 27 | 2.44 % | | | 7 | C D D C C | A71BX | 15 | 2.01 % | | 18 | 1.63 % | | | 8 | D C D C C | 3B9KW | 10 | 1.34 % | | 12 | 1.08 % | | | 9 | D C D C | 3B8M | 10 | 1.34 % | | 16 | 1.45 % | | | 10 | C D C | C4W | 5 | 0.67 % | | 8 | 0.72 % | | | 11 | C D D C C C | E74FRS | 2 | 0.27 % | | 2 | 0.18 % | | | 12 | D C D C C C | 5B4AOF | 2 | 0.27 % | | 2 | 0.18 % | | | 13 | C C D / C C D C C | IS0/OM2TW | 2 | 0.27 % | | 2 | 0.18 % | | | 14 | D C / C C D C C | 4L/LY4ZZ | 1 | 0.13 % | | 1 | 0.09 % | | | 15 | C D / C D D C | E7/Z35M | 1 | 0.13 % | | 1 | 0.09 % | | | 16 | C C D / C C D C C C | EA8/GU4YOX | 1 | 0.13 % | | 1 | 0.09 % | | | 17 | C C D / C D C C C | EA7/G4BJM | 1 | 0.13 % | | 1 | 0.09 % | | | 18 | C C D D C C C C | OZ50DDXG | 1 | 0.13 % | | 1 | 0.09 % | | | 19 | C C D C C / D | TA2SE/3 | 1 | 0.13 % | | 2 | 0.18 % | |
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