District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KR4CY | 10 | 63 | 2003-09-14 | 2005-09-15 | Available |
| KR4CZ | 10 | 61 | 2034-06-18 | — | Active |
| KR4DA | 10 | 51 | 2033-09-14 | — | Active |
| KR4DB | 10 | 55 | 2033-10-18 | — | Active |
| KR4DC | 10 | 57 | 2023-09-14 | 2025-09-15 | Available |
| KR4DD | 10 | 53 | 2033-11-09 | — | Active |
| KR4DE | 10 | 47 | 1998-01-05 | 2000-01-06 | Available |
| KR4DF | 10 | 55 | 2007-09-15 | 2009-09-16 | Available |
| KR4DG | 9 | 55 | 1997-09-30 | 1999-10-01 | Available |
| KR4DH | 10 | 53 | 2033-11-21 | — | Active |
| KR4DI | 11 | 49 | 2003-09-21 | 2005-09-22 | Available |
| KR4DJ | 11 | 59 | 2033-09-21 | — | Active |
| KR4DK | 10 | 55 | 2023-09-21 | 2025-09-22 | Available |
| KR4DL | 10 | 55 | — | — | Available |
| KR4DM | 9 | 53 | 2028-12-01 | — | Active (Vanity) |
| KR4DN | 11 | 51 | 2015-07-28 | 2017-07-29 | Available |
| KR4DO | 10 | 57 | 2034-01-25 | — | Active |
| KR4DP | 10 | 57 | — | — | Available |
| KR4DQ | 10 | 59 | 2023-09-21 | 2025-09-22 | Available |
| KR4DR | 11 | 53 | 2026-01-26 | — | Active (Vanity) |
| KR4DS | 11 | 51 | 2023-09-21 | 2025-09-22 | Available |
| KR4DT | 10 | 49 | 2004-08-14 | 2006-08-15 | Available |
| KR4DU | 11 | 53 | 2033-09-21 | — | Active |
| KR4DV | 10 | 55 | — | — | Available |
| KR4DW | 10 | 55 | 2035-12-09 | — | Active (Vanity) |
| KR4DX | 10 | 57 | 2034-01-04 | — | Active |
| KR4DY | 10 | 59 | 2033-09-21 | — | Active |
| KR4DZ | 10 | 57 | 2003-09-21 | 2005-09-22 | Available |
| KR4EA | 10 | 45 | 2033-09-21 | — | Active |
| KR4EB | 10 | 49 | 2013-12-12 | 2015-12-13 | Available |
| KR4EC | 10 | 51 | 2033-09-21 | — | Active |
| KR4ED | 10 | 47 | — | — | Available |
| KR4EE | 10 | 41 | 2031-03-30 | — | Active (Vanity) |
| KR4EF | 10 | 49 | 2023-09-21 | 2025-09-22 | Available |
| KR4EG | 9 | 49 | 2033-09-21 | — | Active |
| KR4EH | 10 | 47 | 2003-09-21 | 2005-09-22 | Available |
| KR4EI | 11 | 43 | 1997-12-17 | 1999-12-18 | Available |
| KR4EJ | 11 | 53 | 2023-09-21 | 2025-09-22 | Available |
| KR4EK | 10 | 49 | 2013-09-21 | 2015-09-22 | Available |
| KR4EL | 10 | 49 | 2033-09-21 | — | Active |
| KR4EM | 9 | 47 | 2013-09-21 | 2015-09-22 | Available |
| KR4EN | 11 | 45 | 2000-02-22 | 2002-02-23 | Available |
| KR4EO | 10 | 51 | 2023-09-28 | 2025-09-29 | Available |
| KR4EP | 10 | 51 | 2023-09-28 | 2025-09-29 | Available |
| KR4EQ | 10 | 53 | 2033-09-28 | — | Active |
| KR4ER | 11 | 47 | 2023-09-28 | 2025-09-29 | Available |
| KR4ES | 11 | 45 | — | — | Available |
| KR4ET | 10 | 43 | 2033-09-28 | — | Active |
| KR4EU | 11 | 47 | 2001-02-27 | 2003-02-28 | Available |
| KR4EV | 10 | 49 | — | — | Available |
| KR4EW | 10 | 49 | 2024-03-05 | 2026-03-06 | Available |
| KR4EX | 10 | 51 | 2033-10-05 | — | Active |
| KR4EY | 10 | 53 | 2035-09-09 | — | Active (Vanity) |
| KR4EZ | 10 | 51 | 2033-10-05 | — | Active |
| KR4FA | 10 | 53 | — | — | Available |
| KR4FB | 10 | 57 | 2001-02-06 | 2003-02-07 | Available |
| KR4FC | 10 | 59 | — | — | Available |
| KR4FD | 10 | 55 | 2024-03-05 | 2026-03-06 | Available |
| KR4FE | 10 | 49 | 2024-03-10 | 2026-03-11 | Available |
| KR4FF | 10 | 57 | 2034-12-28 | — | Active (Vanity) |
| KR4FG | 9 | 57 | 2033-12-30 | — | Active |
| KR4FH | 10 | 55 | 2033-10-05 | — | Active |
| KR4FI | 11 | 51 | — | — | Available |
| KR4FJ | 11 | 61 | 2033-10-05 | — | Active |
| KR4FK | 10 | 57 | 2033-11-26 | — | Active |
| KR4FL | 10 | 57 | 2024-03-05 | 2026-03-06 | Available |
| KR4FM | 9 | 55 | 2033-10-05 | — | Active |
| KR4FN | 11 | 53 | 2025-12-15 | — | Active (Vanity) |
| KR4FO | 10 | 59 | 2024-03-08 | 2026-03-09 | Available |
| KR4FP | 10 | 59 | 2024-03-05 | 2026-03-06 | Available |
| KR4FQ | 10 | 61 | 2013-10-12 | 2015-10-13 | Available |
| KR4FR | 11 | 55 | 2024-03-05 | 2026-03-06 | Available |
| KR4FS | 11 | 53 | 2033-10-12 | — | Active |
| KR4FT | 10 | 51 | 2029-03-12 | — | Active (Vanity) |
| KR4FU | 11 | 55 | — | — | Available |
| KR4FV | 10 | 57 | 2003-10-12 | 2005-10-13 | Available |
| KR4FW | 10 | 57 | 1997-12-03 | 1999-12-04 | Available |
| KR4FX | 10 | 59 | 2024-03-05 | 2026-03-06 | Available |
| KR4FY | 10 | 61 | 2004-03-13 | 2006-03-14 | Available |
| KR4FZ | 10 | 59 | 2033-10-24 | — | Active |
| KR4GA | 9 | 53 | — | — | Available |
| KR4GB | 9 | 57 | 2024-12-29 | — | Active |
| KR4GC | 9 | 59 | 2033-10-19 | — | Active |
| KR4GD | 9 | 55 | — | — | Available |
| KR4GE | 9 | 49 | — | — | Available |
| KR4GF | 9 | 57 | 2013-10-19 | 2015-10-20 | Available |
| KR4GG | 8 | 57 | 2013-10-19 | 2015-10-20 | Available |
| KR4GH | 9 | 55 | 2013-10-19 | 2015-10-20 | Available |
| KR4GI | 10 | 51 | 2024-03-05 | 2026-03-06 | Available |
| KR4GJ | 10 | 61 | — | — | Available |
| KR4GK | 9 | 57 | 2033-10-19 | — | Active |
| KR4GL | 9 | 57 | — | — | Available |
| KR4GM | 8 | 55 | 2034-01-17 | — | Active |
| KR4GN | 10 | 53 | 2000-05-12 | 2002-05-13 | Available |
| KR4GO | 9 | 59 | 2013-10-19 | 2015-10-20 | Available |
| KR4GP | 9 | 59 | — | — | Available |
| KR4GQ | 9 | 61 | 2033-10-20 | — | Active |
| KR4GR | 10 | 55 | 2024-03-05 | — | Active |
| KR4GS | 10 | 53 | 2002-09-21 | 2004-09-22 | Available |
| KR4GT | 9 | 51 | 2033-10-19 | — | Active |