District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4UEK | 11 | 45 | 2028-09-18 | — | Active |
| N4UEL | 11 | 45 | 2008-06-12 | 2010-06-13 | Available |
| N4UEM | 10 | 43 | 1998-05-20 | 2000-05-21 | Available |
| N4UEN | 12 | 41 | 2017-01-18 | 2019-01-19 | Available |
| N4UEO | 11 | 47 | 2021-07-02 | 2023-07-03 | Available |
| N4UEP | 11 | 47 | 2027-12-18 | — | Active |
| N4UEQ | 11 | 49 | — | — | Available |
| N4UER | 12 | 43 | 2032-04-23 | — | Active |
| N4UES | 12 | 41 | 2031-09-10 | — | Active |
| N4UET | 11 | 39 | — | — | Available |
| N4UEU | 12 | 43 | 1998-11-18 | 2000-11-19 | Available |
| N4UEV | 11 | 45 | 2028-12-23 | — | Active |
| N4UEW | 11 | 45 | 2019-09-21 | 2021-09-22 | Available |
| N4UEX | 11 | 47 | 2030-04-28 | — | Active |
| N4UEY | 11 | 49 | 2014-04-28 | 2016-04-29 | Available |
| N4UEZ | 11 | 47 | 2019-03-19 | 2021-03-20 | Available |
| N4UFA | 11 | 49 | 2028-08-30 | — | Active |
| N4UFB | 11 | 53 | 2028-08-23 | — | Active |
| N4UFC | 11 | 55 | 2013-10-19 | 2015-10-20 | Available |
| N4UFD | 11 | 51 | 2018-07-20 | 2020-07-21 | Available |
| N4UFE | 11 | 45 | 2029-03-02 | — | Active |
| N4UFF | 11 | 53 | 1998-11-01 | 2000-11-02 | Available |
| N4UFG | 10 | 53 | 2027-07-04 | — | Active (Vanity) |
| N4UFH | 11 | 51 | 1998-11-01 | 2000-11-02 | Available |
| N4UFI | 12 | 47 | 2020-10-23 | 2022-10-24 | Available |
| N4UFJ | 12 | 57 | — | — | Available |
| N4UFK | 11 | 53 | 1998-11-08 | 2000-11-09 | Available |
| N4UFL | 11 | 53 | 2028-11-05 | — | Active |
| N4UFM | 10 | 51 | 2011-08-06 | 2013-08-07 | Available |
| N4UFN | 12 | 49 | — | — | Available |
| N4UFO | 11 | 55 | 2030-05-01 | — | Active (Vanity) |
| N4UFP | 11 | 55 | 2024-03-05 | 2026-03-06 | Available |
| N4UFQ | 11 | 57 | 2008-07-21 | 2010-07-22 | Available |
| N4UFR | 12 | 51 | 2028-01-05 | — | Active |
| N4UFS | 12 | 49 | — | — | Available |
| N4UFT | 11 | 47 | 2000-11-13 | 2002-11-14 | Available |
| N4UFU | 12 | 51 | 2020-07-17 | 2022-07-18 | Available |
| N4UFV | 11 | 53 | 2018-01-30 | 2020-01-31 | Available |
| N4UFW | 11 | 53 | 2019-11-26 | 2021-11-27 | Available |
| N4UFX | 11 | 55 | 2001-01-29 | 2003-01-30 | Available |
| N4UFY | 11 | 57 | 2030-02-12 | — | Active |
| N4UFZ | 11 | 55 | 2018-10-02 | 2020-10-03 | Available |
| N4UGA | 10 | 49 | 2029-06-30 | — | Active |
| N4UGB | 10 | 53 | — | — | Available |
| N4UGC | 10 | 55 | — | — | Available |
| N4UGD | 10 | 51 | 2028-10-29 | — | Active |
| N4UGE | 10 | 45 | 1998-11-08 | 2000-11-09 | Available |
| N4UGF | 10 | 53 | 2020-05-26 | 2022-05-27 | Available |
| N4UGG | 9 | 53 | 1998-11-08 | 2000-11-09 | Available |
| N4UGH | 10 | 51 | 2031-09-10 | — | Active |
| N4UGI | 11 | 47 | 2028-11-16 | — | Active |
| N4UGJ | 11 | 57 | — | — | Available |
| N4UGK | 10 | 53 | 1998-11-08 | 2000-11-09 | Available |
| N4UGL | 10 | 53 | 2033-03-30 | — | Active |
| N4UGM | 9 | 51 | 2009-12-31 | 2012-01-01 | Available |
| N4UGN | 11 | 49 | 2001-03-13 | 2003-03-14 | Available |
| N4UGO | 10 | 55 | — | — | Available |
| N4UGP | 10 | 55 | 2010-03-28 | 2012-03-29 | Available |
| N4UGQ | 10 | 57 | — | — | Available |
| N4UGR | 11 | 51 | 2010-09-01 | 2012-09-02 | Available |
| N4UGS | 11 | 49 | 2029-03-19 | — | Active |
| N4UGT | 10 | 47 | 2030-01-20 | — | Active |
| N4UGU | 11 | 51 | 2008-08-18 | 2010-08-19 | Available |
| N4UGV | 10 | 53 | 2008-08-20 | 2010-08-21 | Available |
| N4UGW | 10 | 53 | 2018-08-19 | 2020-08-20 | Available |
| N4UGX | 10 | 55 | — | — | Available |
| N4UGY | 10 | 57 | — | — | Available |
| N4UGZ | 10 | 55 | 2012-11-10 | 2014-11-11 | Available |
| N4UHA | 11 | 47 | 1998-11-08 | 2000-11-09 | Available |
| N4UHB | 11 | 51 | 2008-09-03 | 2010-09-04 | Available |
| N4UHC | 11 | 53 | 1998-11-08 | 2000-11-09 | Available |
| N4UHD | 11 | 49 | 1998-11-15 | 2000-11-16 | Available |
| N4UHE | 11 | 43 | 2001-10-27 | 2003-10-28 | Available |
| N4UHF | 11 | 51 | 2031-10-13 | — | Active (Vanity) |
| N4UHG | 10 | 51 | — | — | Available |
| N4UHH | 11 | 49 | 1998-11-15 | 2000-11-16 | Available |
| N4UHI | 12 | 45 | 2021-05-11 | 2023-05-12 | Available |
| N4UHJ | 12 | 55 | — | — | Available |
| N4UHK | 11 | 51 | 2008-08-03 | 2010-08-04 | Available |
| N4UHL | 11 | 51 | 2027-10-30 | — | Active |
| N4UHM | 10 | 49 | 1998-11-15 | 2000-11-16 | Available |
| N4UHN | 12 | 47 | 2034-05-31 | — | Active |
| N4UHO | 11 | 53 | — | — | Available |
| N4UHP | 11 | 53 | — | — | Available |
| N4UHQ | 11 | 55 | 2008-07-28 | 2010-07-29 | Available |
| N4UHR | 12 | 49 | 2018-11-04 | 2020-11-05 | Available |
| N4UHS | 12 | 47 | 2019-11-15 | 2021-11-16 | Available |
| N4UHT | 11 | 45 | 2018-12-11 | 2020-12-12 | Available |
| N4UHU | 12 | 49 | 1998-11-15 | 2000-11-16 | Available |
| N4UHV | 11 | 51 | 1998-11-15 | 2000-11-16 | Available |
| N4UHW | 11 | 51 | 2000-03-31 | 2002-04-01 | Available |
| N4UHX | 11 | 53 | 2018-08-03 | 2020-08-04 | Available |
| N4UHY | 11 | 55 | 2028-06-05 | — | Active |
| N4UHZ | 11 | 53 | 2030-02-19 | — | Active (Vanity) |
| N4UIA | 12 | 43 | 2009-01-28 | 2011-01-29 | Available |
| N4UIB | 12 | 47 | 2002-10-25 | 2004-10-26 | Available |
| N4UIC | 12 | 49 | 2003-05-25 | 2005-05-26 | Available |
| N4UID | 12 | 45 | — | — | Available |
| N4UIE | 12 | 39 | 1998-11-15 | 2000-11-16 | Available |
| N4UIF | 12 | 47 | 2012-01-09 | 2014-01-10 | Available |