District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KC4DK | 9 | 59 | 2005-11-01 | 2007-11-02 | Available |
| KC4DL | 9 | 59 | 2028-12-04 | — | Active (Vanity) |
| KC4DM | 8 | 57 | 2035-01-17 | — | Active (Vanity) |
| KC4DN | 10 | 55 | 2027-08-08 | — | Active |
| KC4DO | 9 | 61 | — | — | Available |
| KC4DP | 9 | 61 | 2004-11-22 | 2006-11-23 | Available |
| KC4DQ | 9 | 63 | 2015-10-27 | 2017-10-28 | Available |
| KC4DR | 10 | 57 | 2035-01-17 | — | Active |
| KC4DS | 10 | 55 | 2029-09-13 | — | Active (Vanity) |
| KC4DT | 9 | 53 | 2035-04-28 | — | Active (Vanity) |
| KC4DU | 10 | 57 | — | — | Available |
| KC4DV | 9 | 59 | 2031-07-19 | — | Active (Vanity) |
| KC4DW | 9 | 59 | 2030-04-07 | — | Active (Vanity) |
| KC4DX | 9 | 61 | 2027-03-27 | — | Active (Vanity) |
| KC4DY | 9 | 63 | — | — | Available |
| KC4DZ | 9 | 61 | — | — | Available |
| KC4EA | 9 | 49 | — | — | Available |
| KC4EB | 9 | 53 | 1999-06-02 | 2001-06-03 | Available |
| KC4EC | 9 | 55 | 2025-06-05 | — | Active |
| KC4ED | 9 | 51 | 2027-12-23 | — | Active (Vanity) |
| KC4EE | 9 | 45 | 2025-05-11 | — | Active |
| KC4EF | 9 | 53 | 2014-12-08 | 2016-12-09 | Available |
| KC4EG | 8 | 53 | 2035-12-09 | — | Active (Vanity) |
| KC4EH | 9 | 51 | — | — | Available |
| KC4EI | 10 | 47 | 2007-11-05 | 2009-11-06 | Available |
| KC4EJ | 10 | 57 | 2015-03-06 | 2017-03-07 | Available |
| KC4EK | 9 | 53 | 2015-01-26 | 2017-01-27 | Available |
| KC4EL | 9 | 53 | 2028-11-14 | — | Active (Vanity) |
| KC4EM | 8 | 51 | 2028-09-21 | — | Active (Vanity) |
| KC4EN | 10 | 49 | — | — | Available |
| KC4EO | 9 | 55 | 2021-05-18 | 2023-05-19 | Available |
| KC4EP | 9 | 55 | 2010-11-13 | 2012-11-14 | Available |
| KC4EQ | 9 | 57 | — | — | Available |
| KC4ER | 10 | 51 | — | — | Available |
| KC4ES | 10 | 49 | 2029-04-20 | — | Active |
| KC4ET | 9 | 47 | 2028-06-16 | — | Active |
| KC4EU | 10 | 51 | — | — | Available |
| KC4EV | 9 | 53 | 2005-12-11 | 2007-12-12 | Available |
| KC4EW | 9 | 53 | 2021-04-10 | 2023-04-11 | Available |
| KC4EX | 9 | 55 | 2005-11-28 | 2007-11-29 | Available |
| KC4EY | 9 | 57 | 2019-03-24 | 2021-03-25 | Available |
| KC4EZ | 9 | 55 | 2031-05-18 | — | Active (Vanity) |
| KC4FA | 9 | 57 | 2034-08-18 | — | Active |
| KC4FB | 9 | 61 | 2012-05-12 | 2014-05-13 | Available |
| KC4FC | 9 | 63 | 2005-01-10 | 2007-01-11 | Available |
| KC4FD | 9 | 59 | 2015-01-10 | 2017-01-11 | Available |
| KC4FE | 9 | 53 | 2027-06-09 | — | Active (Vanity) |
| KC4FF | 9 | 61 | — | — | Available |
| KC4FG | 8 | 61 | 2007-03-21 | 2009-03-22 | Available |
| KC4FH | 9 | 59 | — | — | Available |
| KC4FI | 10 | 55 | — | — | Available |
| KC4FJ | 10 | 65 | 2021-09-17 | 2023-09-18 | Available |
| KC4FK | 9 | 61 | 2026-06-26 | 2028-06-27 | Canceled (grace period) |
| KC4FL | 9 | 61 | 2028-06-11 | — | Active |
| KC4FM | 8 | 59 | 2035-04-27 | — | Active |
| KC4FN | 10 | 57 | 2013-02-05 | 2015-02-06 | Available |
| KC4FO | 9 | 63 | 2029-03-21 | — | Active |
| KC4FP | 9 | 63 | 2036-08-18 | — | Active (Vanity) |
| KC4FQ | 9 | 65 | — | — | Available |
| KC4FR | 10 | 59 | 2029-08-16 | — | Active (Vanity) |
| KC4FS | 10 | 57 | 2022-07-21 | 2024-07-22 | Available |
| KC4FT | 9 | 55 | 2025-03-13 | — | Active |
| KC4FU | 10 | 59 | 2013-04-06 | 2015-04-07 | Available |
| KC4FV | 9 | 61 | 2035-01-12 | — | Active |
| KC4FW | 9 | 61 | 2019-11-11 | 2021-11-12 | Available |
| KC4FX | 9 | 63 | — | — | Available |
| KC4FY | 9 | 65 | 2005-03-23 | 2007-03-24 | Available |
| KC4FZ | 9 | 63 | — | — | Available |
| KC4GA | 8 | 57 | — | — | Available |
| KC4GB | 8 | 61 | 2026-01-31 | — | Active |
| KC4GC | 8 | 63 | 2025-02-02 | — | Active |
| KC4GD | 8 | 59 | 2000-08-04 | 2002-08-05 | Available |
| KC4GE | 8 | 53 | 2035-10-22 | — | Active |
| KC4GF | 8 | 61 | — | — | Available |
| KC4GG | 7 | 61 | — | — | Available |
| KC4GH | 8 | 59 | 2035-03-09 | — | Active |
| KC4GI | 9 | 55 | 2015-10-04 | 2017-10-05 | Available |
| KC4GJ | 9 | 65 | — | — | Available |
| KC4GK | 8 | 61 | — | — | Available |
| KC4GL | 8 | 61 | 2029-11-20 | — | Active (Vanity) |
| KC4GM | 7 | 59 | 2034-02-03 | — | Active (Vanity) |
| KC4GN | 9 | 57 | — | — | Available |
| KC4GO | 8 | 63 | 2035-07-26 | — | Active |
| KC4GP | 8 | 63 | 2028-12-30 | — | Active (Vanity) |
| KC4GQ | 8 | 65 | 2024-09-01 | 2026-09-02 | Available |
| KC4GR | 9 | 59 | — | — | Available |
| KC4GS | 9 | 57 | 2033-11-07 | — | Active (Vanity) |
| KC4GT | 8 | 55 | 2018-03-09 | 2020-03-10 | Available |
| KC4GU | 9 | 59 | 2015-02-27 | 2017-02-28 | Available |
| KC4GV | 8 | 61 | 1999-12-19 | 2001-12-20 | Available |
| KC4GW | 8 | 61 | 2023-08-03 | 2025-08-04 | Available |
| KC4GX | 8 | 63 | — | — | Available |
| KC4GY | 8 | 65 | 2015-03-16 | 2017-03-17 | Available |
| KC4GZ | 8 | 63 | 2015-01-13 | 2017-01-14 | Available |
| KC4HA | 9 | 55 | 1999-06-01 | 2001-06-02 | Available |
| KC4HB | 9 | 59 | 2035-12-14 | — | Active |
| KC4HC | 9 | 61 | 2024-12-23 | — | Active |
| KC4HD | 9 | 57 | 2005-04-03 | 2007-04-04 | Available |
| KC4HE | 9 | 51 | 2034-08-23 | — | Active |
| KC4HF | 9 | 59 | 2032-04-10 | — | Active |