District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KU4FS | 11 | 53 | 2017-05-16 | 2019-05-17 | Available |
| KU4FT | 10 | 51 | 2034-04-05 | — | Active |
| KU4FU | 11 | 55 | 2018-05-21 | 2020-05-22 | Available |
| KU4FV | 10 | 57 | 1998-01-23 | 2000-01-24 | Available |
| KU4FW | 10 | 57 | 2007-01-11 | 2009-01-12 | Available |
| KU4FX | 10 | 59 | 2034-07-21 | — | Active |
| KU4FY | 10 | 61 | 1997-10-11 | 1999-10-12 | Available |
| KU4FZ | 10 | 59 | 2004-09-14 | 2006-09-15 | Available |
| KU4GA | 9 | 53 | 2036-10-10 | — | Active (Vanity) |
| KU4GB | 9 | 57 | 1997-09-17 | 1999-09-18 | Available |
| KU4GC | 9 | 59 | 2027-02-14 | — | Active |
| KU4GD | 9 | 55 | 2027-12-29 | — | Active |
| KU4GE | 9 | 49 | 2005-02-14 | 2007-02-15 | Available |
| KU4GF | 9 | 57 | 2005-04-28 | 2007-04-29 | Available |
| KU4GG | 8 | 57 | 2025-04-03 | — | Active |
| KU4GH | 9 | 55 | — | — | Available |
| KU4GI | 10 | 51 | 2005-02-15 | 2007-02-16 | Available |
| KU4GJ | 10 | 61 | 2033-03-16 | — | Active |
| KU4GK | 9 | 57 | 1997-08-12 | 1999-08-13 | Available |
| KU4GL | 9 | 57 | 2024-03-05 | 2026-03-06 | Available |
| KU4GM | 8 | 55 | 1998-05-05 | 2000-05-06 | Available |
| KU4GN | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| KU4GO | 9 | 59 | 2033-09-30 | — | Active |
| KU4GP | 9 | 59 | 2032-04-29 | — | Active |
| KU4GQ | 9 | 61 | 2033-03-16 | — | Active |
| KU4GR | 10 | 55 | 2000-07-04 | 2002-07-05 | Available |
| KU4GS | 10 | 53 | 2002-03-07 | 2004-03-08 | Available |
| KU4GT | 9 | 51 | 1998-10-06 | 2000-10-07 | Available |
| KU4GU | 10 | 55 | 2015-07-03 | 2017-07-04 | Available |
| KU4GV | 9 | 57 | 2000-12-12 | 2002-12-13 | Available |
| KU4GW | 9 | 57 | 2026-10-16 | — | Active |
| KU4GX | 9 | 59 | — | — | Available |
| KU4GY | 9 | 61 | 2004-03-12 | 2006-03-13 | Available |
| KU4GZ | 9 | 59 | 2034-02-06 | — | Active (Vanity) |
| KU4HA | 10 | 51 | 2006-08-13 | 2008-08-14 | Available |
| KU4HB | 10 | 55 | 2026-04-29 | — | Active |
| KU4HC | 10 | 57 | 2036-03-02 | — | Active |
| KU4HD | 10 | 53 | 2027-11-07 | — | Active |
| KU4HE | 10 | 47 | 1998-04-22 | 2000-04-23 | Available |
| KU4HF | 10 | 55 | 2001-05-07 | 2003-05-08 | Available |
| KU4HG | 9 | 55 | 1998-06-02 | 2000-06-03 | Available |
| KU4HH | 10 | 53 | 2007-02-11 | 2009-02-12 | Available |
| KU4HI | 11 | 49 | — | — | Available |
| KU4HJ | 11 | 59 | 2025-10-28 | — | Active |
| KU4HK | 10 | 55 | 1997-08-01 | 1999-08-02 | Available |
| KU4HL | 10 | 55 | 2017-05-30 | 2019-05-31 | Available |
| KU4HM | 9 | 53 | 2013-06-13 | 2015-06-14 | Available |
| KU4HN | 11 | 51 | 2026-10-01 | — | Active |
| KU4HO | 10 | 57 | 2035-08-19 | — | Active (Vanity) |
| KU4HP | 10 | 57 | 2031-09-03 | — | Active (Vanity) |
| KU4HQ | 10 | 59 | — | — | Available |
| KU4HR | 11 | 53 | 2024-10-04 | 2026-10-05 | Available |
| KU4HS | 11 | 51 | 2008-09-28 | 2010-09-29 | Available |
| KU4HT | 10 | 49 | 1997-09-24 | 1999-09-25 | Available |
| KU4HU | 11 | 53 | 1999-02-20 | 2001-02-21 | Available |
| KU4HV | 10 | 55 | 2001-08-20 | 2003-08-21 | Available |
| KU4HW | 10 | 55 | 1999-11-16 | 2001-11-17 | Available |
| KU4HX | 10 | 57 | 2035-11-04 | — | Active |
| KU4HY | 10 | 59 | 2026-06-18 | — | Active |
| KU4HZ | 10 | 57 | 1998-04-22 | 2000-04-23 | Available |
| KU4IA | 11 | 47 | 2026-07-01 | — | Active |
| KU4IB | 11 | 51 | 1997-08-08 | 1999-08-09 | Available |
| KU4IC | 11 | 53 | 2007-06-26 | 2009-06-27 | Available |
| KU4ID | 11 | 49 | 1999-01-08 | 2001-01-09 | Available |
| KU4IE | 11 | 43 | 2015-08-30 | 2017-08-31 | Available |
| KU4IF | 11 | 51 | 1997-09-17 | 1999-09-18 | Available |
| KU4IG | 10 | 51 | 1999-12-21 | 2001-12-22 | Available |
| KU4IH | 11 | 49 | 1997-09-17 | 1999-09-18 | Available |
| KU4II | 12 | 45 | 2017-07-07 | 2019-07-08 | Available |
| KU4IJ | 12 | 55 | 2023-03-23 | 2025-03-24 | Available |
| KU4IK | 11 | 51 | 2000-12-14 | 2002-12-15 | Available |
| KU4IL | 11 | 51 | 2027-02-06 | — | Active |
| KU4IM | 10 | 49 | 2027-07-14 | — | Active |
| KU4IN | 12 | 47 | 2007-07-22 | 2009-07-23 | Available |
| KU4IO | 11 | 53 | 1997-08-11 | 1999-08-12 | Available |
| KU4IP | 11 | 53 | 2014-11-14 | 2016-11-15 | Available |
| KU4IQ | 11 | 55 | 1997-12-01 | 1999-12-02 | Available |
| KU4IR | 12 | 49 | 2000-07-04 | 2002-07-05 | Available |
| KU4IS | 12 | 47 | 2007-07-17 | 2009-07-18 | Available |
| KU4IT | 11 | 45 | 1998-03-03 | 2000-03-04 | Available |
| KU4IU | 12 | 49 | 2036-09-24 | — | Active |
| KU4IV | 11 | 51 | 2035-01-03 | — | Active (Vanity) |
| KU4IW | 11 | 51 | 2021-08-21 | 2023-08-22 | Available |
| KU4IX | 11 | 53 | 2027-07-29 | — | Active |
| KU4IY | 11 | 55 | 2035-05-16 | — | Active |
| KU4IZ | 11 | 53 | 1997-10-15 | 1999-10-16 | Available |
| KU4JA | 11 | 57 | 2027-03-26 | — | Active |
| KU4JB | 11 | 61 | 2035-12-23 | — | Active |
| KU4JC | 11 | 63 | 1997-10-20 | 1999-10-21 | Available |
| KU4JD | 11 | 59 | 2024-03-05 | 2026-03-06 | Available |
| KU4JE | 11 | 53 | 1997-10-15 | 1999-10-16 | Available |
| KU4JF | 11 | 61 | 2021-06-11 | 2023-06-12 | Available |
| KU4JG | 10 | 61 | 2000-05-05 | 2002-05-06 | Available |
| KU4JH | 11 | 59 | 2017-12-05 | 2019-12-06 | Available |
| KU4JI | 12 | 55 | 2010-06-29 | 2012-06-30 | Available |
| KU4JJ | 12 | 65 | 1998-09-08 | 2000-09-09 | Available |
| KU4JK | 11 | 61 | 2000-02-01 | 2002-02-02 | Available |
| KU4JL | 11 | 61 | 1998-07-31 | 2000-08-01 | Available |
| KU4JM | 10 | 59 | 1997-10-17 | 1999-10-18 | Available |
| KU4JN | 12 | 57 | 2007-04-21 | 2009-04-22 | Available |