District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4ZAF | 9 | 57 | — | — | Available |
| K4ZAG | 8 | 57 | 2028-08-29 | — | Active (Vanity) |
| K4ZAH | 9 | 55 | — | — | Available |
| K4ZAI | 10 | 51 | — | — | Available |
| K4ZAJ | 10 | 61 | 2033-03-13 | — | Active (Vanity) |
| K4ZAK | 9 | 57 | 2031-08-30 | — | Active (Vanity) |
| K4ZAL | 9 | 57 | 2004-05-24 | 2006-05-25 | Available |
| K4ZAM | 8 | 55 | 2027-05-05 | — | Active (Vanity) |
| K4ZAN | 10 | 53 | 2036-06-01 | — | Active (Vanity) |
| K4ZAO | 9 | 59 | — | — | Available |
| K4ZAP | 9 | 59 | 2029-02-10 | — | Active (Vanity) |
| K4ZAQ | 9 | 61 | — | — | Available |
| K4ZAR | 10 | 55 | 2027-07-28 | — | Active (Vanity) |
| K4ZAS | 10 | 53 | 2036-09-29 | — | Active (Vanity) |
| K4ZAT | 9 | 51 | — | — | Available |
| K4ZAU | 10 | 55 | 2032-03-07 | — | Active (Vanity) |
| K4ZAV | 9 | 57 | — | — | Available |
| K4ZAW | 9 | 57 | 2029-04-09 | — | Active (Vanity) |
| K4ZAX | 9 | 59 | 2031-03-30 | — | Active (Vanity) |
| K4ZAY | 9 | 61 | — | — | Available |
| K4ZAZ | 9 | 59 | 2005-09-03 | 2007-09-04 | Available |
| K4ZBA | 9 | 57 | 2032-10-25 | — | Active (Vanity) |
| K4ZBB | 9 | 61 | 2030-04-11 | — | Active (Vanity) |
| K4ZBC | 9 | 63 | 2028-03-03 | — | Active |
| K4ZBD | 9 | 59 | — | — | Available |
| K4ZBE | 9 | 53 | — | — | Available |
| K4ZBF | 9 | 61 | 2017-11-21 | 2019-11-22 | Available |
| K4ZBG | 8 | 61 | 2028-02-04 | — | Active |
| K4ZBH | 9 | 59 | — | — | Available |
| K4ZBI | 10 | 55 | — | — | Available |
| K4ZBJ | 10 | 65 | 2030-11-09 | — | Active (Vanity) |
| K4ZBK | 9 | 61 | — | — | Available |
| K4ZBL | 9 | 61 | 2004-05-31 | 2006-06-01 | Available |
| K4ZBM | 8 | 59 | — | — | Available |
| K4ZBN | 10 | 57 | — | — | Available |
| K4ZBO | 9 | 63 | — | — | Available |
| K4ZBP | 9 | 63 | 2025-03-30 | — | Active |
| K4ZBQ | 9 | 65 | — | — | Available |
| K4ZBR | 10 | 59 | 2021-08-23 | 2023-08-24 | Available |
| K4ZBS | 10 | 57 | — | — | Available |
| K4ZBT | 9 | 55 | — | — | Available |
| K4ZBU | 10 | 59 | — | — | Available |
| K4ZBV | 9 | 61 | — | — | Available |
| K4ZBW | 9 | 61 | — | — | Available |
| K4ZBX | 9 | 63 | 2027-03-20 | — | Active |
| K4ZBY | 9 | 65 | — | — | Available |
| K4ZBZ | 9 | 63 | 2004-03-10 | 2006-03-11 | Available |
| K4ZCA | 9 | 59 | — | — | Available |
| K4ZCB | 9 | 63 | 2003-06-08 | 2005-06-09 | Available |
| K4ZCC | 9 | 65 | — | — | Available |
| K4ZCD | 9 | 61 | 1998-04-05 | 2000-04-06 | Available |
| K4ZCE | 9 | 55 | 2011-06-07 | 2013-06-08 | Available |
| K4ZCF | 9 | 63 | 2007-07-23 | 2009-07-24 | Available |
| K4ZCG | 8 | 63 | 2014-06-11 | 2016-06-12 | Available |
| K4ZCH | 9 | 61 | — | — | Available |
| K4ZCI | 10 | 57 | — | — | Available |
| K4ZCJ | 10 | 67 | 2015-03-15 | 2017-03-16 | Available |
| K4ZCK | 9 | 63 | — | — | Available |
| K4ZCL | 9 | 63 | — | — | Available |
| K4ZCM | 8 | 61 | 2029-05-22 | — | Active (Vanity) |
| K4ZCN | 10 | 59 | 2025-02-28 | — | Active |
| K4ZCO | 9 | 65 | 2033-10-31 | — | Active (Vanity) |
| K4ZCP | 9 | 65 | — | — | Available |
| K4ZCQ | 9 | 67 | 2027-03-05 | — | Active |
| K4ZCR | 10 | 61 | 2005-06-28 | 2007-06-29 | Available |
| K4ZCS | 10 | 59 | — | — | Available |
| K4ZCT | 9 | 57 | — | — | Available |
| K4ZCU | 10 | 61 | — | — | Available |
| K4ZCV | 9 | 63 | — | — | Available |
| K4ZCW | 9 | 63 | — | — | Available |
| K4ZCX | 9 | 65 | — | — | Available |
| K4ZCY | 9 | 67 | 2018-04-08 | 2020-04-09 | Available |
| K4ZCZ | 9 | 65 | — | — | Available |
| K4ZDA | 9 | 55 | 2032-03-12 | — | Active (Vanity) |
| K4ZDB | 9 | 59 | 2034-10-31 | — | Active |
| K4ZDC | 9 | 61 | 1998-03-01 | 2000-03-02 | Available |
| K4ZDD | 9 | 57 | 2026-05-23 | — | Active |
| K4ZDE | 9 | 51 | — | — | Available |
| K4ZDF | 9 | 59 | 2024-08-14 | 2026-08-15 | Available |
| K4ZDG | 8 | 59 | 2036-10-27 | — | Active (Vanity) |
| K4ZDH | 9 | 57 | 2031-09-03 | — | Active |
| K4ZDI | 10 | 53 | — | — | Available |
| K4ZDJ | 10 | 63 | 2027-04-17 | — | Active |
| K4ZDK | 9 | 59 | — | — | Available |
| K4ZDL | 9 | 59 | 2036-04-23 | — | Active (Vanity) |
| K4ZDM | 8 | 57 | 2027-12-27 | — | Active (Vanity) |
| K4ZDN | 10 | 55 | — | — | Available |
| K4ZDO | 9 | 61 | — | — | Available |
| K4ZDP | 9 | 61 | — | — | Available |
| K4ZDQ | 9 | 63 | — | — | Available |
| K4ZDR | 10 | 57 | 2032-10-02 | — | Active (Vanity) |
| K4ZDS | 10 | 55 | — | — | Available |
| K4ZDT | 9 | 53 | 2028-03-16 | — | Active |
| K4ZDU | 10 | 57 | — | — | Available |
| K4ZDV | 9 | 59 | — | — | Available |
| K4ZDW | 9 | 59 | — | — | Available |
| K4ZDX | 9 | 61 | 2028-01-14 | — | Active (Vanity) |
| K4ZDY | 9 | 63 | 2005-12-04 | 2007-12-05 | Available |
| K4ZDZ | 9 | 61 | 2027-12-03 | — | Active |
| K4ZEA | 9 | 49 | 2036-02-07 | — | Active (Vanity) |