| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | AO7IMD | 2460 | 51.12 % | | 3184 | 48.66 % | | | 2 | C C D C C | AC2PB | 1168 | 24.27 % | | 1668 | 25.49 % | | | 3 | C D C C C | A2NEW | 527 | 10.95 % | | 646 | 9.87 % | | | 4 | C C D C | AE4M | 227 | 4.72 % | | 334 | 5.10 % | | | 5 | C D C C | F1UN | 159 | 3.30 % | | 222 | 3.39 % | | | 6 | D C D C C | 3V8HP | 61 | 1.27 % | | 94 | 1.44 % | | | 7 | D C D C C C | 2D0OMN | 56 | 1.16 % | | 61 | 0.93 % | | | 8 | C D D C C | A41ZZ | 41 | 0.85 % | | 47 | 0.72 % | | | 9 | C D D C | E72A | 18 | 0.37 % | | 20 | 0.31 % | | | 10 | C C D C C C / C | DL5ANE/P | 13 | 0.27 % | | 14 | 0.21 % | | | 11 | D C D C | 4L7T | 12 | 0.25 % | | 15 | 0.23 % | | | 12 | C C D C C C C | AO1IARU | 8 | 0.17 % | | 9 | 0.14 % | | | 13 | C D D C C C | E20OGB | 7 | 0.15 % | | 7 | 0.11 % | | | 14 | C C D C C C / C C C | DL3MHT/QRP | 7 | 0.15 % | | 7 | 0.11 % | | | 15 | C C D D D C C C C | AO100IARU | 5 | 0.10 % | | 8 | 0.12 % | | | 16 | C D C C C / C | F1MMT/P | 4 | 0.08 % | | 4 | 0.06 % | | | 17 | D C D C C C / C | 2E0TPH/M | 4 | 0.08 % | | 4 | 0.06 % | | | 18 | C D C | C5R | 3 | 0.06 % | | 4 | 0.06 % | | | 19 | C C / C C D C C C | OZ/DG1DCP | 3 | 0.06 % | | 3 | 0.05 % | | | 20 | C C D D C C C | DL50HSK | 3 | 0.06 % | | 3 | 0.05 % | | | 21 | C C D D D D C C C | SP1000KBC | 2 | 0.04 % | | 2 | 0.03 % | | | 22 | C D D D D C C C C | A4100IARU | 2 | 0.04 % | | 2 | 0.03 % | | | 23 | C D C C C / C C C | F5MUX/QRP | 2 | 0.04 % | | 2 | 0.03 % | | | 24 | C C D D D C | OR100U | 2 | 0.04 % | | 2 | 0.03 % | | | 25 | C C D C C / C C C | DB7SH/QRP | 1 | 0.02 % | | 1 | 0.02 % | | | 26 | D C D D D C C C C | 8A100IARU | 1 | 0.02 % | | 1 | 0.02 % | | | 27 | C C D D C C / C | DL35RV/M | 1 | 0.02 % | | 1 | 0.02 % | | | 28 | C D C C C / C C | F4CJY/MM | 1 | 0.02 % | | 1 | 0.02 % | | | 29 | C C / D C D C C C | DL/9A3CQL | 1 | 0.02 % | | 1 | 0.02 % | | | 30 | D C / C C D C C C | 4X/KC1USQ | 1 | 0.02 % | | 1 | 0.02 % | | | 31 | C / C D C C | M/N1ZR | 1 | 0.02 % | | 1 | 0.02 % | | | 32 | C D C C C C | M0UDDD | 1 | 0.02 % | | 1 | 0.02 % | | | 33 | C C D C C / C C | ON7GY/MM | 1 | 0.02 % | | 1 | 0.02 % | | | 34 | C C D / C C D C C C / | EA6/DL5DRM/P | 1 | 0.02 % | | 1 | 0.02 % | | | | 35 | C C D / C C D C C C | EA7/SM4CTI | 1 | 0.02 % | | 1 | 0.02 % | | | 36 | C C D C C C / C C | PE1OAD/MM | 1 | 0.02 % | | 1 | 0.02 % | | | 37 | C D D D C C C C | R100IARU | 1 | 0.02 % | | 2 | 0.03 % | | | 38 | C C D C C / C | RW3KE/P | 1 | 0.02 % | | 1 | 0.02 % | | | 39 | C D D C C / C C C | S51PV/QRP | 1 | 0.02 % | | 1 | 0.02 % | | | 40 | C C D / C C D C C | IK3/UY7LA | 1 | 0.02 % | | 1 | 0.02 % | | | 41 | C C D D D C C C | TM100REF | 1 | 0.02 % | | 1 | 0.02 % | | | 42 | C C / C C D C | UN/OH7O | 1 | 0.02 % | | 1 | 0.02 % | |
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