District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4NXO | 10 | 59 | — | — | Available |
| K4NXP | 10 | 59 | — | — | Available |
| K4NXQ | 10 | 61 | — | — | Available |
| K4NXR | 11 | 55 | — | — | Available |
| K4NXS | 11 | 53 | 2025-03-29 | 2027-03-30 | Canceled (grace period) |
| K4NXT | 10 | 51 | 2033-11-14 | — | Active (Vanity) |
| K4NXU | 11 | 55 | — | — | Available |
| K4NXV | 10 | 57 | 2025-11-03 | — | Active (Vanity) |
| K4NXW | 10 | 57 | — | — | Available |
| K4NXX | 10 | 59 | 2028-01-18 | — | Active (Vanity) |
| K4NXY | 10 | 61 | — | — | Available |
| K4NXZ | 10 | 59 | 2018-03-20 | 2020-03-21 | Available |
| K4NYA | 10 | 55 | 2033-07-09 | — | Active (Vanity) |
| K4NYB | 10 | 59 | 2012-08-31 | 2014-09-01 | Available |
| K4NYC | 10 | 61 | 2036-01-10 | — | Active (Vanity) |
| K4NYD | 10 | 57 | — | — | Available |
| K4NYE | 10 | 51 | 2034-06-25 | — | Active (Vanity) |
| K4NYF | 10 | 59 | — | — | Available |
| K4NYG | 9 | 59 | 2030-11-21 | — | Active (Vanity) |
| K4NYH | 10 | 57 | 2014-07-18 | 2016-07-19 | Available |
| K4NYI | 11 | 53 | 2036-11-04 | — | Active (Vanity) |
| K4NYJ | 11 | 63 | — | — | Available |
| K4NYK | 10 | 59 | 2016-06-07 | 2018-06-08 | Available |
| K4NYL | 10 | 59 | — | — | Available |
| K4NYM | 9 | 57 | 2030-05-27 | — | Active (Vanity) |
| K4NYN | 11 | 55 | 2028-12-01 | — | Active (Vanity) |
| K4NYO | 10 | 61 | 2026-08-14 | — | Active |
| K4NYP | 10 | 61 | 2036-11-25 | — | Active (Vanity) |
| K4NYQ | 10 | 63 | — | — | Available |
| K4NYR | 11 | 57 | — | — | Available |
| K4NYS | 11 | 55 | 2027-02-20 | — | Active |
| K4NYT | 10 | 53 | 2036-02-26 | — | Active (Vanity) |
| K4NYU | 11 | 57 | — | — | Available |
| K4NYV | 10 | 59 | 2019-06-10 | 2021-06-11 | Available |
| K4NYW | 10 | 59 | 2029-01-23 | — | Active (Vanity) |
| K4NYX | 10 | 61 | 2028-08-07 | — | Active (Vanity) |
| K4NYY | 10 | 63 | 2025-07-02 | — | Active (Vanity) |
| K4NYZ | 10 | 61 | — | — | Available |
| K4NZA | 10 | 53 | 2034-10-01 | — | Active (Vanity) |
| K4NZB | 10 | 57 | 2036-08-22 | — | Active (Vanity) |
| K4NZC | 10 | 59 | — | — | Available |
| K4NZD | 10 | 55 | 2034-11-04 | — | Active (Vanity) |
| K4NZE | 10 | 49 | 2026-09-17 | — | Active |
| K4NZF | 10 | 57 | — | — | Available |
| K4NZG | 9 | 57 | — | — | Available |
| K4NZH | 10 | 55 | 2021-08-24 | 2023-08-25 | Available |
| K4NZI | 11 | 51 | — | — | Available |
| K4NZJ | 11 | 61 | 2005-01-05 | 2007-01-06 | Available |
| K4NZK | 10 | 57 | — | — | Available |
| K4NZL | 10 | 57 | — | — | Available |
| K4NZM | 9 | 55 | — | — | Available |
| K4NZN | 11 | 53 | — | — | Available |
| K4NZO | 10 | 59 | — | — | Available |
| K4NZP | 10 | 59 | — | — | Available |
| K4NZQ | 10 | 61 | — | — | Available |
| K4NZR | 11 | 55 | — | — | Available |
| K4NZS | 11 | 53 | — | — | Available |
| K4NZT | 10 | 51 | — | — | Available |
| K4NZU | 11 | 55 | — | — | Available |
| K4NZV | 10 | 57 | — | — | Available |
| K4NZW | 10 | 57 | — | — | Available |
| K4NZX | 10 | 59 | — | — | Available |
| K4NZY | 10 | 61 | 2006-12-23 | 2008-12-24 | Available |
| K4NZZ | 10 | 59 | — | — | Available |
| K4OAA | 9 | 53 | — | — | Available |
| K4OAB | 9 | 57 | — | — | Available |
| K4OAC | 9 | 59 | 2028-04-23 | — | Active |
| K4OAD | 9 | 55 | 2027-11-18 | — | Active |
| K4OAE | 9 | 49 | — | — | Available |
| K4OAF | 9 | 57 | — | — | Available |
| K4OAG | 8 | 57 | 2026-04-02 | — | Active |
| K4OAH | 9 | 55 | 2026-03-01 | — | Active |
| K4OAI | 10 | 51 | — | — | Available |
| K4OAJ | 10 | 61 | 2036-06-11 | — | Active (Vanity) |
| K4OAK | 9 | 57 | 2027-04-18 | — | Active |
| K4OAL | 9 | 57 | 2033-11-18 | — | Active (Vanity) |
| K4OAM | 8 | 55 | 2027-09-23 | — | Active (Vanity) |
| K4OAN | 10 | 53 | 2028-01-27 | — | Active |
| K4OAO | 9 | 59 | 2007-05-06 | 2009-05-07 | Available |
| K4OAP | 9 | 59 | 2027-01-02 | — | Active |
| K4OAQ | 9 | 61 | 2035-02-04 | — | Active |
| K4OAR | 10 | 55 | 2032-07-14 | — | Active |
| K4OAS | 10 | 53 | — | — | Available |
| K4OAT | 9 | 51 | 2028-09-09 | — | Active (Vanity) |
| K4OAU | 10 | 55 | — | — | Available |
| K4OAV | 9 | 57 | — | — | Available |
| K4OAW | 9 | 57 | — | — | Available |
| K4OAX | 9 | 59 | 2029-04-19 | — | Active (Vanity) |
| K4OAY | 9 | 61 | — | — | Available |
| K4OAZ | 9 | 59 | — | — | Available |
| K4OBA | 9 | 57 | 2030-08-14 | — | Active (Vanity) |
| K4OBB | 9 | 61 | 2035-06-17 | — | Active (Vanity) |
| K4OBC | 9 | 63 | 2026-09-11 | — | Active |
| K4OBD | 9 | 59 | 2031-07-08 | — | Active (Vanity) |
| K4OBE | 9 | 53 | 2027-01-14 | — | Active (Vanity) |
| K4OBF | 9 | 61 | — | — | Available |
| K4OBG | 8 | 61 | 2027-02-12 | — | Active (Vanity) |
| K4OBH | 9 | 59 | 2032-05-22 | — | Active (Vanity) |
| K4OBI | 10 | 55 | 2034-09-03 | — | Active (Vanity) |
| K4OBJ | 10 | 65 | 2028-11-02 | — | Active (Vanity) |