District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4ZXH | 9 | 61 | — | — | Available |
| K4ZXI | 10 | 57 | 2027-07-15 | — | Active (Vanity) |
| K4ZXJ | 10 | 67 | — | — | Available |
| K4ZXK | 9 | 63 | — | — | Available |
| K4ZXL | 9 | 63 | — | — | Available |
| K4ZXM | 8 | 61 | 2024-01-22 | 2026-01-23 | Available |
| K4ZXN | 10 | 59 | 2031-09-22 | — | Active (Vanity) |
| K4ZXO | 9 | 65 | 2006-05-29 | 2008-05-30 | Available |
| K4ZXP | 9 | 65 | — | — | Available |
| K4ZXQ | 9 | 67 | — | — | Available |
| K4ZXR | 10 | 61 | 2018-11-14 | 2020-11-15 | Available |
| K4ZXS | 10 | 59 | — | — | Available |
| K4ZXT | 9 | 57 | 2027-12-08 | — | Active (Vanity) |
| K4ZXU | 10 | 61 | — | — | Available |
| K4ZXV | 9 | 63 | 2034-02-04 | — | Active |
| K4ZXW | 9 | 63 | 2032-10-22 | — | Active (Vanity) |
| K4ZXX | 9 | 65 | 2030-04-10 | — | Active (Vanity) |
| K4ZXY | 9 | 67 | 2028-07-11 | — | Active (Vanity) |
| K4ZXZ | 9 | 65 | — | — | Available |
| K4ZYA | 9 | 61 | — | — | Available |
| K4ZYB | 9 | 65 | — | — | Available |
| K4ZYC | 9 | 67 | — | — | Available |
| K4ZYD | 9 | 63 | 2036-03-31 | — | Active (Vanity) |
| K4ZYE | 9 | 57 | — | — | Available |
| K4ZYF | 9 | 65 | 2016-11-25 | 2018-11-26 | Available |
| K4ZYG | 8 | 65 | — | — | Available |
| K4ZYH | 9 | 63 | — | — | Available |
| K4ZYI | 10 | 59 | — | — | Available |
| K4ZYJ | 10 | 69 | 2013-06-25 | 2015-06-26 | Available |
| K4ZYK | 9 | 65 | 2019-06-18 | 2021-06-19 | Available |
| K4ZYL | 9 | 65 | — | — | Available |
| K4ZYM | 8 | 63 | 2032-07-02 | — | Active (Vanity) |
| K4ZYN | 10 | 61 | — | — | Available |
| K4ZYO | 9 | 67 | — | — | Available |
| K4ZYP | 9 | 67 | 2027-02-18 | — | Active (Vanity) |
| K4ZYQ | 9 | 69 | 2004-10-06 | 2006-10-07 | Available |
| K4ZYR | 10 | 63 | — | — | Available |
| K4ZYS | 10 | 61 | — | — | Available |
| K4ZYT | 9 | 59 | — | — | Available |
| K4ZYU | 10 | 63 | 2036-01-29 | — | Active |
| K4ZYV | 9 | 65 | 2024-04-06 | 2026-04-07 | Available |
| K4ZYW | 9 | 65 | — | — | Available |
| K4ZYX | 9 | 67 | 2027-05-31 | — | Active (Vanity) |
| K4ZYY | 9 | 69 | 2028-02-05 | — | Active (Vanity) |
| K4ZYZ | 9 | 67 | 2035-02-01 | — | Active (Vanity) |
| K4ZZA | 9 | 59 | 2032-04-12 | — | Active (Vanity) |
| K4ZZB | 9 | 63 | 2008-01-26 | 2025-06-20 | Available |
| K4ZZC | 9 | 65 | 2018-11-13 | 2020-11-14 | Available |
| K4ZZD | 9 | 61 | — | — | Available |
| K4ZZE | 9 | 55 | 2036-01-03 | — | Active (Vanity) |
| K4ZZF | 9 | 63 | 2006-11-26 | 2008-11-27 | Available |
| K4ZZG | 8 | 63 | 2016-09-04 | 2018-09-05 | Available |
| K4ZZH | 9 | 61 | — | — | Available |
| K4ZZI | 10 | 57 | — | — | Available |
| K4ZZJ | 10 | 67 | 2018-12-14 | 2020-12-15 | Available |
| K4ZZK | 9 | 63 | 2031-04-30 | — | Active |
| K4ZZL | 9 | 63 | — | — | Available |
| K4ZZM | 8 | 61 | 2028-12-05 | — | Active (Vanity) |
| K4ZZN | 10 | 59 | — | — | Available |
| K4ZZO | 9 | 65 | 2028-04-07 | — | Active |
| K4ZZP | 9 | 65 | — | — | Available |
| K4ZZQ | 9 | 67 | 2017-02-24 | 2019-02-25 | Available |
| K4ZZR | 10 | 61 | 2030-08-11 | — | Active (Vanity) |
| K4ZZS | 10 | 59 | 2011-02-05 | 2013-02-06 | Available |
| K4ZZT | 9 | 57 | 2025-06-19 | — | Active (Vanity) |
| K4ZZU | 10 | 61 | — | — | Available |
| K4ZZV | 9 | 63 | — | — | Available |
| K4ZZW | 9 | 63 | — | — | Available |
| K4ZZX | 9 | 65 | 2030-08-06 | — | Active (Vanity) |
| K4ZZY | 9 | 67 | 2034-10-22 | — | Active (Vanity) |
| K4ZZZ | 9 | 65 | 2028-04-22 | — | Active (Vanity) |
| N4AAA | 10 | 43 | 2033-11-26 | — | Active (Vanity) |
| N4AAB | 10 | 47 | 2024-10-07 | 2026-10-08 | Available |
| N4AAC | 10 | 49 | 2035-12-12 | — | Active (Vanity) |
| N4AAD | 10 | 45 | 2029-04-09 | — | Active |
| N4AAE | 10 | 39 | 2027-09-18 | — | Active |
| N4AAF | 10 | 47 | 2035-08-15 | — | Active |
| N4AAG | 9 | 47 | 2032-10-02 | — | Active (Vanity) |
| N4AAH | 10 | 45 | 2032-11-09 | — | Active (Vanity) |
| N4AAI | 11 | 41 | 2035-05-08 | — | Active (Vanity) |
| N4AAJ | 11 | 51 | 2024-10-04 | 2026-10-05 | Available |
| N4AAK | 10 | 47 | 2028-01-28 | — | Active |
| N4AAL | 10 | 47 | 2035-12-02 | — | Active (Vanity) |
| N4AAM | 9 | 45 | 2027-05-02 | — | Active (Vanity) |
| N4AAN | 11 | 43 | 2035-06-07 | — | Active (Vanity) |
| N4AAO | 10 | 49 | 2027-07-04 | — | Active (Vanity) |
| N4AAP | 10 | 49 | 2028-10-13 | — | Active |
| N4AAQ | 10 | 51 | 2021-03-02 | 2023-03-03 | Available |
| N4AAR | 11 | 45 | 2024-12-14 | — | Active |
| N4AAS | 11 | 43 | 2036-09-11 | — | Active (Vanity) |
| N4AAT | 10 | 41 | 2030-06-13 | — | Active (Vanity) |
| N4AAU | 11 | 45 | 2027-11-19 | — | Active |
| N4AAV | 10 | 47 | 2034-02-24 | — | Active (Vanity) |
| N4AAW | 10 | 47 | 2036-01-09 | — | Active (Vanity) |
| N4AAX | 10 | 49 | 2032-12-13 | — | Active (Vanity) |
| N4AAY | 10 | 51 | 2032-08-16 | — | Active (Vanity) |
| N4AAZ | 10 | 49 | 2025-04-05 | — | Active |
| N4ABA | 10 | 47 | 2034-03-16 | — | Active (Vanity) |
| N4ABB | 10 | 51 | 2036-02-06 | — | Active (Vanity) |
| N4ABC | 10 | 53 | 2030-11-07 | — | Active (Vanity) |