District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4UTU | 12 | 45 | 2018-09-17 | 2020-09-18 | Available |
| N4UTV | 11 | 47 | 1999-01-17 | 2001-01-18 | Available |
| N4UTW | 11 | 47 | 2000-07-11 | 2002-07-12 | Available |
| N4UTX | 11 | 49 | 2028-03-20 | — | Active (Vanity) |
| N4UTY | 11 | 51 | 2023-01-26 | 2025-01-27 | Available |
| N4UTZ | 11 | 49 | 2030-06-05 | — | Active |
| N4UUA | 12 | 47 | 2028-09-29 | — | Active |
| N4UUB | 12 | 51 | 2000-07-24 | 2002-07-25 | Available |
| N4UUC | 12 | 53 | 2028-12-31 | — | Active |
| N4UUD | 12 | 49 | 2028-11-10 | — | Active |
| N4UUE | 12 | 43 | 2018-11-04 | 2020-11-05 | Available |
| N4UUF | 12 | 51 | — | — | Available |
| N4UUG | 11 | 51 | — | — | Available |
| N4UUH | 12 | 49 | 2030-07-10 | — | Active |
| N4UUI | 13 | 45 | 2030-06-09 | — | Active |
| N4UUJ | 13 | 55 | 2032-03-07 | — | Active (Vanity) |
| N4UUK | 12 | 51 | 2029-07-06 | — | Active |
| N4UUL | 12 | 51 | 1998-08-17 | 2000-08-18 | Available |
| N4UUM | 11 | 49 | 2030-02-26 | — | Active |
| N4UUN | 13 | 47 | 1999-01-17 | 2001-01-18 | Available |
| N4UUO | 12 | 53 | 2006-11-17 | 2008-11-18 | Available |
| N4UUP | 12 | 53 | 2008-09-25 | 2010-09-26 | Available |
| N4UUQ | 12 | 55 | 2033-10-05 | — | Active |
| N4UUR | 13 | 49 | 1999-01-24 | 2001-01-25 | Available |
| N4UUS | 13 | 47 | 1999-01-24 | 2001-01-25 | Available |
| N4UUT | 12 | 45 | — | — | Available |
| N4UUU | 13 | 49 | 2031-03-23 | — | Active |
| N4UUV | 12 | 51 | 2009-05-18 | 2011-05-19 | Available |
| N4UUW | 12 | 51 | 1999-01-24 | 2001-01-25 | Available |
| N4UUX | 12 | 53 | 2028-03-11 | — | Active |
| N4UUY | 12 | 55 | 2019-05-13 | 2021-05-14 | Available |
| N4UUZ | 12 | 53 | — | — | Available |
| N4UVA | 11 | 49 | 2027-04-10 | — | Active (Vanity) |
| N4UVB | 11 | 53 | 2033-11-27 | — | Active |
| N4UVC | 11 | 55 | 2032-04-14 | — | Active |
| N4UVD | 11 | 51 | 2019-01-11 | 2021-01-12 | Available |
| N4UVE | 11 | 45 | 1999-01-24 | 2001-01-25 | Available |
| N4UVF | 11 | 53 | 2029-03-26 | — | Active |
| N4UVG | 10 | 53 | 2010-07-07 | 2012-07-08 | Available |
| N4UVH | 11 | 51 | 2031-05-24 | — | Active |
| N4UVI | 12 | 47 | 2008-09-15 | 2010-09-16 | Available |
| N4UVJ | 12 | 57 | — | — | Available |
| N4UVK | 11 | 53 | 2028-02-25 | — | Active |
| N4UVL | 11 | 53 | 1999-01-24 | 2001-01-25 | Available |
| N4UVM | 10 | 51 | 1999-01-24 | 2001-01-25 | Available |
| N4UVN | 12 | 49 | 2008-09-15 | 2010-09-16 | Available |
| N4UVO | 11 | 55 | 2010-12-04 | 2012-12-05 | Available |
| N4UVP | 11 | 55 | — | — | Available |
| N4UVQ | 11 | 57 | 2029-05-10 | — | Active |
| N4UVR | 12 | 51 | 2031-05-28 | — | Active |
| N4UVS | 12 | 49 | — | — | Available |
| N4UVT | 11 | 47 | 2034-04-30 | — | Active (Vanity) |
| N4UVU | 12 | 51 | 2007-10-23 | 2009-10-24 | Available |
| N4UVV | 11 | 53 | 2033-08-17 | — | Active |
| N4UVW | 11 | 53 | 2031-09-10 | — | Active |
| N4UVX | 11 | 55 | 2028-10-21 | — | Active |
| N4UVY | 11 | 57 | 2010-01-23 | 2012-01-24 | Available |
| N4UVZ | 11 | 55 | 1999-01-24 | 2001-01-25 | Available |
| N4UWA | 11 | 49 | 2027-10-03 | — | Active (Vanity) |
| N4UWB | 11 | 53 | 2029-03-19 | — | Active |
| N4UWC | 11 | 55 | 2028-10-09 | — | Active |
| N4UWD | 11 | 51 | 2023-04-20 | 2025-04-21 | Available |
| N4UWE | 11 | 45 | 2015-03-20 | 2017-03-21 | Available |
| N4UWF | 11 | 53 | 2031-10-01 | — | Active |
| N4UWG | 10 | 53 | 2032-11-01 | — | Active (Vanity) |
| N4UWH | 11 | 51 | 1999-01-31 | 2001-02-01 | Available |
| N4UWI | 12 | 47 | 1999-01-31 | 2001-02-01 | Available |
| N4UWJ | 12 | 57 | 2008-11-03 | 2010-11-04 | Available |
| N4UWK | 11 | 53 | 2008-11-03 | 2010-11-04 | Available |
| N4UWL | 11 | 53 | 2028-09-16 | — | Active |
| N4UWM | 10 | 51 | 2008-10-13 | 2010-10-14 | Available |
| N4UWN | 12 | 49 | 2018-09-16 | 2020-09-17 | Available |
| N4UWO | 11 | 55 | 2028-09-29 | — | Active |
| N4UWP | 11 | 55 | 2011-09-03 | 2013-09-04 | Available |
| N4UWQ | 11 | 57 | 2001-12-31 | 2004-01-01 | Available |
| N4UWR | 12 | 51 | 2018-12-24 | 2020-12-25 | Available |
| N4UWS | 12 | 49 | 2034-02-15 | — | Active |
| N4UWT | 11 | 47 | 2020-01-21 | 2022-01-22 | Available |
| N4UWU | 12 | 51 | 2031-03-26 | — | Active |
| N4UWV | 11 | 53 | — | — | Available |
| N4UWW | 11 | 53 | 2036-07-21 | — | Active (Vanity) |
| N4UWX | 11 | 55 | 2000-07-04 | 2002-07-05 | Available |
| N4UWY | 11 | 57 | 2028-10-12 | — | Active |
| N4UWZ | 11 | 55 | 2008-11-13 | 2010-11-14 | Available |
| N4UXA | 11 | 51 | 2027-10-06 | — | Active |
| N4UXB | 11 | 55 | 2022-08-21 | 2024-08-22 | Available |
| N4UXC | 11 | 57 | 1999-02-07 | 2001-02-08 | Available |
| N4UXD | 11 | 53 | 2009-02-11 | 2011-02-12 | Available |
| N4UXE | 11 | 47 | 2011-10-01 | 2013-10-02 | Available |
| N4UXF | 11 | 55 | — | — | Available |
| N4UXG | 10 | 55 | 2030-07-03 | — | Active |
| N4UXH | 11 | 53 | — | — | Available |
| N4UXI | 12 | 49 | 2022-06-21 | 2024-06-22 | Available |
| N4UXJ | 12 | 59 | — | — | Available |
| N4UXK | 11 | 55 | — | — | Available |
| N4UXL | 11 | 55 | — | — | Available |
| N4UXM | 10 | 53 | 2005-03-15 | 2007-03-16 | Available |
| N4UXN | 12 | 51 | 2008-02-26 | 2010-02-27 | Available |
| N4UXO | 11 | 57 | 1999-01-07 | 2001-01-08 | Available |
| N4UXP | 11 | 57 | 2029-02-18 | — | Active |