District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KS4AA | 10 | 47 | 2029-09-21 | — | Active (Vanity) |
| KS4AB | 10 | 51 | — | — | Available |
| KS4AC | 10 | 53 | 2024-05-24 | 2026-05-25 | Available |
| KS4AD | 10 | 49 | 2024-06-23 | 2026-06-24 | Available |
| KS4AE | 10 | 43 | 2031-07-20 | — | Active (Vanity) |
| KS4AF | 10 | 51 | 2004-08-23 | 2006-08-24 | Available |
| KS4AG | 9 | 51 | 2024-05-31 | 2026-06-01 | Available |
| KS4AH | 10 | 49 | — | — | Available |
| KS4AI | 11 | 45 | 2001-02-13 | 2003-02-14 | Available |
| KS4AJ | 11 | 55 | 2003-12-21 | 2005-12-22 | Available |
| KS4AK | 10 | 51 | 2034-03-29 | — | Active |
| KS4AL | 10 | 51 | 2034-05-24 | — | Active |
| KS4AM | 9 | 49 | 2024-06-08 | 2026-06-09 | Available |
| KS4AN | 11 | 47 | 2034-03-08 | — | Active |
| KS4AO | 10 | 53 | — | — | Available |
| KS4AP | 10 | 53 | — | — | Available |
| KS4AQ | 10 | 55 | 2014-05-31 | 2016-06-01 | Available |
| KS4AR | 11 | 49 | 2033-05-25 | — | Active |
| KS4AS | 11 | 47 | 2023-01-05 | 2025-01-06 | Available |
| KS4AT | 10 | 45 | 2034-06-14 | — | Active |
| KS4AU | 11 | 49 | 2014-06-08 | 2016-06-09 | Available |
| KS4AV | 10 | 51 | — | — | Available |
| KS4AW | 10 | 51 | 1999-09-30 | 2001-10-01 | Available |
| KS4AX | 10 | 53 | 2033-12-21 | — | Active |
| KS4AY | 10 | 55 | 2014-05-10 | 2016-05-11 | Available |
| KS4AZ | 10 | 53 | — | — | Available |
| KS4BA | 10 | 51 | 2000-04-26 | 2002-04-27 | Available |
| KS4BB | 10 | 55 | 2034-07-09 | — | Active |
| KS4BC | 10 | 57 | 2024-03-29 | 2026-03-30 | Available |
| KS4BD | 10 | 53 | 2014-03-29 | 2016-03-30 | Available |
| KS4BE | 10 | 47 | 2014-05-31 | 2016-06-01 | Available |
| KS4BF | 10 | 55 | — | — | Available |
| KS4BG | 9 | 55 | 2034-03-29 | — | Active |
| KS4BH | 10 | 53 | 2034-09-17 | — | Active |
| KS4BI | 11 | 49 | 1997-08-21 | 1999-08-22 | Available |
| KS4BJ | 11 | 59 | 2030-03-20 | — | Active |
| KS4BK | 10 | 55 | — | — | Available |
| KS4BL | 10 | 55 | — | — | Available |
| KS4BM | 9 | 53 | 1999-09-05 | 2001-09-06 | Available |
| KS4BN | 11 | 51 | — | — | Available |
| KS4BO | 10 | 57 | 2034-04-26 | — | Active |
| KS4BP | 10 | 57 | 2004-03-29 | 2006-03-30 | Available |
| KS4BQ | 10 | 59 | — | — | Available |
| KS4BR | 11 | 53 | 2014-06-08 | 2016-06-09 | Available |
| KS4BS | 11 | 51 | 2023-06-01 | 2025-06-02 | Available |
| KS4BT | 10 | 49 | — | — | Available |
| KS4BU | 11 | 53 | — | — | Available |
| KS4BV | 10 | 55 | 1999-06-10 | 2001-06-11 | Available |
| KS4BW | 10 | 55 | 2008-05-01 | 2010-05-02 | Available |
| KS4BX | 10 | 57 | 2013-05-25 | 2015-05-26 | Available |
| KS4BY | 10 | 59 | 2004-09-09 | 2006-09-10 | Available |
| KS4BZ | 10 | 57 | 2024-09-09 | 2026-09-10 | Available |
| KS4CA | 10 | 53 | 2030-07-17 | — | Active |
| KS4CB | 10 | 57 | 2024-04-05 | 2026-04-06 | Available |
| KS4CC | 10 | 59 | 2024-03-05 | 2026-03-06 | Available |
| KS4CD | 10 | 55 | 2000-07-04 | 2002-07-05 | Available |
| KS4CE | 10 | 49 | 2032-06-28 | — | Active |
| KS4CF | 10 | 57 | 2025-01-01 | — | Active |
| KS4CG | 9 | 57 | 2034-02-08 | — | Active |
| KS4CH | 10 | 55 | — | — | Available |
| KS4CI | 11 | 51 | 2013-01-19 | 2015-01-20 | Available |
| KS4CJ | 11 | 61 | 2004-06-21 | 2006-06-22 | Available |
| KS4CK | 10 | 57 | 2033-09-26 | — | Active |
| KS4CL | 10 | 57 | 2000-09-08 | 2002-09-09 | Available |
| KS4CM | 9 | 55 | 2031-04-02 | — | Active |
| KS4CN | 11 | 53 | 2033-12-28 | — | Active |
| KS4CO | 10 | 59 | 2034-02-06 | — | Active |
| KS4CP | 10 | 59 | 2004-06-28 | 2006-06-29 | Available |
| KS4CQ | 10 | 61 | — | — | Available |
| KS4CR | 11 | 55 | 2032-07-23 | — | Active (Vanity) |
| KS4CS | 11 | 53 | 2030-03-24 | — | Active (Vanity) |
| KS4CT | 10 | 51 | 1999-08-22 | 2001-08-23 | Available |
| KS4CU | 11 | 55 | 2003-06-15 | 2005-06-16 | Available |
| KS4CV | 10 | 57 | 2013-10-12 | 2015-10-13 | Available |
| KS4CW | 10 | 57 | 2003-03-23 | 2005-03-24 | Available |
| KS4CX | 10 | 59 | 2014-09-16 | 2016-09-17 | Available |
| KS4CY | 10 | 61 | 2024-05-24 | 2026-05-25 | Available |
| KS4CZ | 10 | 59 | 2034-02-15 | — | Active |
| KS4DA | 10 | 49 | — | — | Available |
| KS4DB | 10 | 53 | — | — | Available |
| KS4DC | 10 | 55 | 2024-03-05 | 2026-03-06 | Available |
| KS4DD | 10 | 51 | 2034-03-29 | — | Active |
| KS4DE | 10 | 45 | 2024-03-05 | 2026-03-06 | Available |
| KS4DF | 10 | 53 | — | — | Available |
| KS4DG | 9 | 53 | 2022-07-07 | 2024-07-08 | Available |
| KS4DH | 10 | 51 | — | — | Available |
| KS4DI | 11 | 47 | 2021-09-18 | 2023-09-19 | Available |
| KS4DJ | 11 | 57 | — | — | Available |
| KS4DK | 10 | 53 | 2024-03-27 | 2026-03-28 | Available |
| KS4DL | 10 | 53 | 2031-09-10 | — | Active |
| KS4DM | 9 | 51 | 2003-09-14 | 2005-09-15 | Available |
| KS4DN | 11 | 49 | 2031-08-27 | — | Active |
| KS4DO | 10 | 55 | 2023-03-05 | 2025-03-06 | Available |
| KS4DP | 10 | 55 | 2014-03-22 | 2016-03-23 | Available |
| KS4DQ | 10 | 57 | — | — | Available |
| KS4DR | 11 | 51 | — | — | Available |
| KS4DS | 11 | 49 | 2023-01-03 | 2025-01-04 | Available |
| KS4DT | 10 | 47 | 2033-10-19 | — | Active |
| KS4DU | 11 | 51 | 2008-05-06 | 2010-05-07 | Available |
| KS4DV | 10 | 53 | 2024-09-22 | 2026-09-23 | Available |