District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KU4VC | 10 | 59 | 1998-11-25 | 2000-11-26 | Available |
| KU4VD | 10 | 55 | 2014-07-14 | 2016-07-15 | Available |
| KU4VE | 10 | 49 | 2024-11-07 | — | Active |
| KU4VF | 10 | 57 | 2027-10-04 | — | Active |
| KU4VG | 9 | 57 | 2027-06-26 | — | Active |
| KU4VH | 10 | 55 | 2027-06-18 | — | Active |
| KU4VI | 11 | 51 | 2000-11-14 | 2002-11-15 | Available |
| KU4VJ | 11 | 61 | 2008-07-17 | 2010-07-18 | Available |
| KU4VK | 10 | 57 | 2027-06-19 | — | Active |
| KU4VL | 10 | 57 | 2000-05-20 | 2002-05-21 | Available |
| KU4VM | 9 | 55 | 2035-10-01 | — | Active |
| KU4VN | 11 | 53 | 2029-07-04 | — | Active |
| KU4VO | 10 | 59 | 2021-05-16 | 2023-05-17 | Available |
| KU4VP | 10 | 59 | 2028-10-23 | — | Active |
| KU4VQ | 10 | 61 | 2005-08-23 | 2007-08-24 | Available |
| KU4VR | 11 | 55 | 2000-06-23 | 2002-06-24 | Available |
| KU4VS | 11 | 53 | 2002-09-17 | 2004-09-18 | Available |
| KU4VT | 10 | 51 | 2026-06-04 | — | Active |
| KU4VU | 11 | 55 | 2029-02-03 | — | Active |
| KU4VV | 10 | 57 | 2004-02-24 | 2006-02-25 | Available |
| KU4VW | 10 | 57 | 1999-03-25 | 2001-03-26 | Available |
| KU4VX | 10 | 59 | 2017-06-22 | 2019-06-23 | Available |
| KU4VY | 10 | 61 | 2034-02-15 | — | Active |
| KU4VZ | 10 | 59 | 1998-12-01 | 2000-12-02 | Available |
| KU4WA | 10 | 53 | 2000-06-09 | 2002-06-10 | Available |
| KU4WB | 10 | 57 | 2007-02-14 | 2009-02-15 | Available |
| KU4WC | 10 | 59 | 1999-05-05 | 2001-05-06 | Available |
| KU4WD | 10 | 55 | 2028-07-30 | — | Active |
| KU4WE | 10 | 49 | 2028-11-10 | — | Active |
| KU4WF | 10 | 57 | 2036-03-14 | — | Active |
| KU4WG | 9 | 57 | 1998-12-14 | 2000-12-15 | Available |
| KU4WH | 10 | 55 | 2028-06-18 | — | Active |
| KU4WI | 11 | 51 | 2028-10-14 | — | Active |
| KU4WJ | 11 | 61 | 2000-01-25 | 2002-01-26 | Available |
| KU4WK | 10 | 57 | 1999-01-19 | 2001-01-20 | Available |
| KU4WL | 10 | 57 | 2007-11-24 | 2009-11-25 | Available |
| KU4WM | 9 | 55 | 1999-01-13 | 2001-01-14 | Available |
| KU4WN | 11 | 53 | 2007-09-22 | 2009-09-23 | Available |
| KU4WO | 10 | 59 | 2008-11-25 | 2010-11-26 | Available |
| KU4WP | 10 | 59 | 2014-02-01 | 2016-02-02 | Available |
| KU4WQ | 10 | 61 | 2036-08-13 | — | Active |
| KU4WR | 11 | 55 | 2025-01-25 | — | Active |
| KU4WS | 11 | 53 | 2027-12-12 | — | Active |
| KU4WT | 10 | 51 | 2017-01-14 | 2019-01-15 | Available |
| KU4WU | 11 | 55 | 1999-04-12 | 2001-04-13 | Available |
| KU4WV | 10 | 57 | 2022-04-07 | 2024-04-08 | Available |
| KU4WW | 10 | 57 | 2027-01-20 | — | Active |
| KU4WX | 10 | 59 | 2033-03-04 | — | Active (Vanity) |
| KU4WY | 10 | 61 | 1999-03-16 | 2001-03-17 | Available |
| KU4WZ | 10 | 59 | 2028-07-12 | — | Active |
| KU4XA | 10 | 55 | 2036-04-16 | — | Active |
| KU4XB | 10 | 59 | 2028-11-25 | — | Active |
| KU4XC | 10 | 61 | 2014-08-22 | 2016-08-23 | Available |
| KU4XD | 10 | 57 | 2008-11-18 | 2010-11-19 | Available |
| KU4XE | 10 | 51 | 1999-02-10 | 2001-02-11 | Available |
| KU4XF | 10 | 59 | 2007-10-01 | 2009-10-02 | Available |
| KU4XG | 9 | 59 | 1999-02-10 | 2001-02-11 | Available |
| KU4XH | 10 | 57 | 2014-05-17 | 2016-05-18 | Available |
| KU4XI | 11 | 53 | 1999-01-12 | 2001-01-13 | Available |
| KU4XJ | 11 | 63 | 2025-05-05 | — | Active |
| KU4XK | 10 | 59 | 2028-05-22 | — | Active |
| KU4XL | 10 | 59 | 2027-02-12 | — | Active |
| KU4XM | 9 | 57 | 1999-04-28 | 2001-04-29 | Available |
| KU4XN | 11 | 55 | 2032-02-04 | — | Active |
| KU4XO | 10 | 61 | 2027-05-18 | — | Active |
| KU4XP | 10 | 61 | 2024-03-05 | 2026-03-06 | Available |
| KU4XQ | 10 | 63 | 2026-12-19 | — | Active |
| KU4XR | 11 | 57 | 2029-01-27 | — | Active |
| KU4XS | 11 | 55 | 2028-12-07 | — | Active |
| KU4XT | 10 | 53 | 1999-02-01 | 2001-02-02 | Available |
| KU4XU | 11 | 57 | 2027-05-02 | — | Active |
| KU4XV | 10 | 59 | 2027-05-02 | — | Active |
| KU4XW | 10 | 59 | 1999-01-19 | 2001-01-20 | Available |
| KU4XX | 10 | 61 | 1999-03-26 | 2001-03-27 | Available |
| KU4XY | 10 | 63 | 2029-01-21 | — | Active |
| KU4XZ | 10 | 61 | 2019-01-25 | 2021-01-26 | Available |
| KU4YA | 10 | 57 | 2022-03-18 | 2024-03-19 | Available |
| KU4YB | 10 | 61 | 1999-03-01 | 2001-03-02 | Available |
| KU4YC | 10 | 63 | 2011-02-19 | 2013-02-20 | Available |
| KU4YD | 10 | 59 | 1999-03-25 | 2001-03-26 | Available |
| KU4YE | 10 | 53 | 2028-04-22 | — | Active |
| KU4YF | 10 | 61 | 2000-05-09 | 2002-05-10 | Available |
| KU4YG | 9 | 61 | 2032-02-02 | — | Active |
| KU4YH | 10 | 59 | 2000-05-05 | 2002-05-06 | Available |
| KU4YI | 11 | 55 | 2017-02-10 | 2019-02-11 | Available |
| KU4YJ | 11 | 65 | 2028-04-07 | — | Active |
| KU4YK | 10 | 61 | 2000-04-21 | 2002-04-22 | Available |
| KU4YL | 10 | 61 | 2028-09-06 | — | Active |
| KU4YM | 9 | 59 | 2028-07-02 | — | Active |
| KU4YN | 11 | 57 | 2027-04-22 | — | Active |
| KU4YO | 10 | 63 | 2029-03-28 | — | Active |
| KU4YP | 10 | 63 | 2018-04-11 | 2020-04-12 | Available |
| KU4YQ | 10 | 65 | 2000-08-15 | 2002-08-16 | Available |
| KU4YR | 11 | 59 | 1999-08-03 | 2001-08-04 | Available |
| KU4YS | 11 | 57 | 2000-05-16 | 2002-05-17 | Available |
| KU4YT | 10 | 55 | 2027-09-29 | — | Active |
| KU4YU | 11 | 59 | 2008-02-09 | 2010-02-10 | Available |
| KU4YV | 10 | 61 | 2009-03-22 | 2011-03-23 | Available |
| KU4YW | 10 | 61 | 2029-06-13 | — | Active |
| KU4YX | 10 | 63 | 1999-05-06 | 2001-05-07 | Available |