District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KT4YA | 9 | 53 | 2032-04-07 | — | Active |
| KT4YB | 9 | 57 | 2023-08-24 | 2025-08-25 | Available |
| KT4YC | 9 | 59 | 2017-04-15 | 2019-04-16 | Available |
| KT4YD | 9 | 55 | 2002-08-17 | 2004-08-18 | Available |
| KT4YE | 9 | 49 | 2024-07-14 | 2026-07-15 | Available |
| KT4YF | 9 | 57 | — | — | Available |
| KT4YG | 8 | 57 | 2036-08-11 | — | Active |
| KT4YH | 9 | 55 | 2015-11-01 | 2017-11-02 | Available |
| KT4YI | 10 | 51 | 2035-11-29 | — | Active |
| KT4YJ | 10 | 61 | 2016-11-22 | 2018-11-23 | Available |
| KT4YK | 9 | 57 | 2019-03-15 | 2021-03-16 | Available |
| KT4YL | 9 | 57 | — | — | Available |
| KT4YM | 8 | 55 | 2002-12-31 | 2005-01-01 | Available |
| KT4YN | 10 | 53 | 2035-02-08 | — | Active |
| KT4YO | 9 | 59 | 2035-02-08 | — | Active |
| KT4YP | 9 | 59 | 2035-06-01 | — | Active |
| KT4YQ | 9 | 61 | 2000-06-01 | 2002-06-02 | Available |
| KT4YR | 10 | 55 | — | — | Available |
| KT4YS | 10 | 53 | 2000-07-08 | 2002-07-09 | Available |
| KT4YT | 9 | 51 | — | — | Available |
| KT4YU | 10 | 55 | 2016-01-24 | 2018-01-25 | Available |
| KT4YV | 9 | 57 | 2000-11-30 | 2002-12-01 | Available |
| KT4YW | 9 | 57 | 2020-12-31 | 2023-01-01 | Available |
| KT4YX | 9 | 59 | — | — | Available |
| KT4YY | 9 | 61 | 1998-01-22 | 2000-01-23 | Available |
| KT4YZ | 9 | 59 | 2016-09-26 | 2018-09-27 | Available |
| KT4ZA | 9 | 51 | 2015-04-07 | 2017-04-08 | Available |
| KT4ZB | 9 | 55 | 2026-03-11 | — | Active |
| KT4ZC | 9 | 57 | 2009-01-24 | 2011-01-25 | Available |
| KT4ZD | 9 | 53 | 2019-02-20 | 2021-02-21 | Available |
| KT4ZE | 9 | 47 | 2036-07-13 | — | Active |
| KT4ZF | 9 | 55 | — | — | Available |
| KT4ZG | 8 | 55 | 2027-10-30 | — | Active |
| KT4ZH | 9 | 53 | — | — | Available |
| KT4ZI | 10 | 49 | 1998-01-21 | 2000-01-22 | Available |
| KT4ZJ | 10 | 59 | — | — | Available |
| KT4ZK | 9 | 55 | 2017-09-18 | 2019-09-19 | Available |
| KT4ZL | 9 | 55 | 2003-01-03 | 2005-01-04 | Available |
| KT4ZM | 8 | 53 | 2025-01-03 | 2027-01-04 | Canceled (grace period) |
| KT4ZN | 10 | 51 | 1999-01-28 | 2001-01-29 | Available |
| KT4ZO | 9 | 57 | 1997-08-22 | 1999-08-23 | Available |
| KT4ZP | 9 | 57 | 2025-04-28 | — | Active |
| KT4ZQ | 9 | 59 | — | — | Available |
| KT4ZR | 10 | 53 | — | — | Available |
| KT4ZS | 10 | 51 | — | — | Available |
| KT4ZT | 9 | 49 | 2031-03-02 | — | Active (Vanity) |
| KT4ZU | 10 | 53 | 1997-09-17 | 1999-09-18 | Available |
| KT4ZV | 9 | 55 | 2032-10-06 | — | Active |
| KT4ZW | 9 | 55 | 2036-02-22 | — | Active |
| KT4ZX | 9 | 57 | 2027-04-27 | — | Active |
| KT4ZY | 9 | 59 | 2023-06-01 | 2025-06-02 | Available |
| KT4ZZ | 9 | 57 | 2036-03-27 | — | Active |
| KU4AA | 10 | 49 | 2031-12-03 | — | Active |
| KU4AB | 10 | 53 | 2034-11-27 | — | Active |
| KU4AC | 10 | 55 | 2036-02-09 | — | Active |
| KU4AD | 10 | 51 | 2004-10-05 | 2006-10-06 | Available |
| KU4AE | 10 | 45 | 2033-12-21 | — | Active |
| KU4AF | 10 | 53 | 2037-01-09 | — | Active |
| KU4AG | 9 | 53 | 2025-09-15 | — | Active |
| KU4AH | 10 | 51 | — | — | Available |
| KU4AI | 11 | 47 | — | — | Available |
| KU4AJ | 11 | 57 | 2026-12-16 | — | Active |
| KU4AK | 10 | 53 | 2017-01-14 | 2019-01-15 | Available |
| KU4AL | 10 | 53 | 2027-01-04 | — | Active |
| KU4AM | 9 | 51 | 2030-01-09 | — | Active |
| KU4AN | 11 | 49 | 1999-03-25 | 2001-03-26 | Available |
| KU4AO | 10 | 55 | 2030-11-06 | — | Active |
| KU4AP | 10 | 55 | 2025-01-27 | — | Active |
| KU4AQ | 10 | 57 | — | — | Available |
| KU4AR | 11 | 51 | 2026-12-19 | — | Active |
| KU4AS | 11 | 49 | 2035-06-27 | — | Active |
| KU4AT | 10 | 47 | 2036-09-03 | — | Active |
| KU4AU | 11 | 51 | 2035-03-19 | — | Active |
| KU4AV | 10 | 53 | 2035-11-22 | — | Active |
| KU4AW | 10 | 53 | 2034-12-12 | — | Active |
| KU4AX | 10 | 55 | 2028-07-20 | — | Active |
| KU4AY | 10 | 57 | 2035-10-31 | — | Active |
| KU4AZ | 10 | 55 | 2000-12-15 | 2002-12-16 | Available |
| KU4BA | 10 | 53 | 2022-08-28 | 2024-08-29 | Available |
| KU4BB | 10 | 57 | 2036-02-27 | — | Active |
| KU4BC | 10 | 59 | 2033-02-23 | — | Active |
| KU4BD | 10 | 55 | 2036-04-17 | — | Active (Vanity) |
| KU4BE | 10 | 49 | — | — | Available |
| KU4BF | 10 | 57 | 2000-06-02 | 2002-06-03 | Available |
| KU4BG | 9 | 57 | — | — | Available |
| KU4BH | 10 | 55 | 1997-08-27 | 1999-08-28 | Available |
| KU4BI | 11 | 51 | 2036-11-04 | — | Active |
| KU4BJ | 11 | 61 | — | — | Available |
| KU4BK | 10 | 57 | 2007-01-06 | 2009-01-07 | Available |
| KU4BL | 10 | 57 | 2036-02-23 | — | Active |
| KU4BM | 9 | 55 | — | — | Available |
| KU4BN | 11 | 53 | 1999-10-10 | 2001-10-11 | Available |
| KU4BO | 10 | 59 | — | — | Available |
| KU4BP | 10 | 59 | 2034-02-22 | — | Active |
| KU4BQ | 10 | 61 | 2006-03-27 | 2008-03-28 | Available |
| KU4BR | 11 | 55 | 2007-02-06 | 2009-02-07 | Available |
| KU4BS | 11 | 53 | — | — | Available |
| KU4BT | 10 | 51 | 2008-06-28 | 2010-06-29 | Available |
| KU4BU | 11 | 55 | 2000-08-11 | 2002-08-12 | Available |
| KU4BV | 10 | 57 | — | — | Available |