District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KU4NK | 11 | 53 | 2036-03-28 | — | Active |
| KU4NL | 11 | 53 | 2017-12-29 | 2019-12-30 | Available |
| KU4NM | 10 | 51 | 2031-02-06 | — | Active (Vanity) |
| KU4NN | 12 | 49 | 2028-08-28 | — | Active |
| KU4NO | 11 | 55 | 2032-11-30 | — | Active |
| KU4NP | 11 | 55 | 2000-05-20 | 2002-05-21 | Available |
| KU4NQ | 11 | 57 | 2000-06-09 | 2002-06-10 | Available |
| KU4NR | 12 | 51 | 2014-09-30 | 2016-10-01 | Available |
| KU4NS | 12 | 49 | 2026-07-18 | — | Active |
| KU4NT | 11 | 47 | 2035-05-09 | — | Active |
| KU4NU | 12 | 51 | 1999-01-28 | 2001-01-29 | Available |
| KU4NV | 11 | 53 | 2007-02-20 | 2009-02-21 | Available |
| KU4NW | 11 | 53 | 1998-03-03 | 2000-03-04 | Available |
| KU4NX | 11 | 55 | 1998-11-24 | 2000-11-25 | Available |
| KU4NY | 11 | 57 | 2028-01-21 | — | Active |
| KU4NZ | 11 | 55 | 2028-01-22 | — | Active |
| KU4OA | 10 | 55 | 2000-01-25 | 2002-01-26 | Available |
| KU4OB | 10 | 59 | 1998-03-18 | 2000-03-19 | Available |
| KU4OC | 10 | 61 | 2027-02-18 | — | Active |
| KU4OD | 10 | 57 | 2034-03-29 | — | Active |
| KU4OE | 10 | 51 | 2007-02-04 | 2009-02-05 | Available |
| KU4OF | 10 | 59 | 1998-05-04 | 2000-05-05 | Available |
| KU4OG | 9 | 59 | 2017-05-12 | 2019-05-13 | Available |
| KU4OH | 10 | 57 | 2000-09-19 | 2002-09-20 | Available |
| KU4OI | 11 | 53 | 2028-02-03 | — | Active |
| KU4OJ | 11 | 63 | 2028-02-05 | — | Active |
| KU4OK | 10 | 59 | 2000-07-26 | 2002-07-27 | Available |
| KU4OL | 10 | 59 | 2027-12-10 | — | Active |
| KU4OM | 9 | 57 | 2035-03-13 | — | Active |
| KU4ON | 11 | 55 | 2022-05-31 | 2024-06-01 | Available |
| KU4OO | 10 | 61 | 2007-06-09 | 2009-06-10 | Available |
| KU4OP | 10 | 61 | 2000-05-18 | 2002-05-19 | Available |
| KU4OQ | 10 | 63 | 2029-04-26 | — | Active |
| KU4OR | 11 | 57 | 1998-03-02 | 2000-03-03 | Available |
| KU4OS | 11 | 55 | 2017-07-18 | 2019-07-19 | Available |
| KU4OT | 10 | 53 | 2025-07-05 | — | Active |
| KU4OU | 11 | 57 | 2025-03-31 | — | Active |
| KU4OV | 10 | 59 | 2027-07-18 | — | Active |
| KU4OW | 10 | 59 | 2035-05-29 | — | Active |
| KU4OX | 10 | 61 | 2000-04-20 | 2002-04-21 | Available |
| KU4OY | 10 | 63 | 2026-12-24 | — | Active |
| KU4OZ | 10 | 61 | 1998-12-01 | 2000-12-02 | Available |
| KU4PA | 10 | 55 | 1998-04-17 | 2000-04-18 | Available |
| KU4PB | 10 | 59 | 1998-11-09 | 2000-11-10 | Available |
| KU4PC | 10 | 61 | 2024-03-05 | 2026-03-06 | Available |
| KU4PD | 10 | 57 | 2024-03-05 | 2026-03-06 | Available |
| KU4PE | 10 | 51 | 2000-02-18 | 2002-02-19 | Available |
| KU4PF | 10 | 59 | 2033-01-26 | — | Active |
| KU4PG | 9 | 59 | 1999-03-11 | 2001-03-12 | Available |
| KU4PH | 10 | 57 | 2015-03-08 | 2017-03-09 | Available |
| KU4PI | 11 | 53 | 2024-03-05 | 2026-03-06 | Available |
| KU4PJ | 11 | 63 | 2027-03-16 | — | Active |
| KU4PK | 10 | 59 | 1999-01-28 | 2001-01-29 | Available |
| KU4PL | 10 | 59 | 1998-12-09 | 2000-12-10 | Available |
| KU4PM | 9 | 57 | 2000-07-04 | 2002-07-05 | Available |
| KU4PN | 11 | 55 | 2001-10-08 | 2003-10-09 | Available |
| KU4PO | 10 | 61 | 2007-05-18 | 2009-05-19 | Available |
| KU4PP | 10 | 61 | 2007-04-18 | 2009-04-19 | Available |
| KU4PQ | 10 | 63 | 2027-04-28 | — | Active |
| KU4PR | 11 | 57 | 2026-08-31 | — | Active |
| KU4PS | 11 | 55 | 2028-02-07 | — | Active |
| KU4PT | 10 | 53 | 2032-11-03 | — | Active |
| KU4PU | 11 | 57 | 2000-12-19 | 2002-12-20 | Available |
| KU4PV | 10 | 59 | 2028-02-20 | — | Active |
| KU4PW | 10 | 59 | 1998-04-22 | 2000-04-23 | Available |
| KU4PX | 10 | 61 | 1998-04-28 | 2000-04-29 | Available |
| KU4PY | 10 | 63 | 2032-06-12 | — | Active |
| KU4PZ | 10 | 61 | 2002-08-06 | 2004-08-07 | Available |
| KU4QA | 10 | 57 | 2008-03-17 | 2010-03-18 | Available |
| KU4QB | 10 | 61 | 2035-11-27 | — | Active |
| KU4QC | 10 | 63 | 2008-03-20 | 2010-03-21 | Available |
| KU4QD | 10 | 59 | 2003-07-09 | 2005-07-10 | Available |
| KU4QE | 10 | 53 | 2007-01-28 | 2009-01-29 | Available |
| KU4QF | 10 | 61 | 1998-05-21 | 2000-05-22 | Available |
| KU4QG | 9 | 61 | 2032-07-21 | — | Active |
| KU4QH | 10 | 59 | 2000-06-28 | 2002-06-29 | Available |
| KU4QI | 11 | 55 | 2028-03-25 | — | Active |
| KU4QJ | 11 | 65 | 2018-03-26 | 2020-03-27 | Available |
| KU4QK | 10 | 61 | 2027-10-24 | — | Active |
| KU4QL | 10 | 61 | 2023-01-19 | 2025-01-20 | Available |
| KU4QM | 9 | 59 | 2022-10-20 | 2024-10-21 | Available |
| KU4QN | 11 | 57 | 1998-10-28 | 2000-10-29 | Available |
| KU4QO | 10 | 63 | 2027-08-15 | — | Active |
| KU4QP | 10 | 63 | 1998-04-16 | 2000-04-17 | Available |
| KU4QQ | 10 | 65 | 1998-05-21 | 2000-05-22 | Available |
| KU4QR | 11 | 59 | 1998-05-28 | 2000-05-29 | Available |
| KU4QS | 11 | 57 | 2028-03-26 | — | Active |
| KU4QT | 10 | 55 | 2028-05-29 | — | Active |
| KU4QU | 11 | 59 | 2018-04-08 | 2020-04-09 | Available |
| KU4QV | 10 | 61 | 1998-10-29 | 2000-10-30 | Available |
| KU4QW | 10 | 61 | 2015-09-01 | 2017-09-02 | Available |
| KU4QX | 10 | 63 | 2027-03-11 | — | Active |
| KU4QY | 10 | 65 | 2000-06-13 | 2002-06-14 | Available |
| KU4QZ | 10 | 63 | 2007-12-20 | 2009-12-21 | Available |
| KU4RA | 11 | 51 | 2027-02-20 | — | Active |
| KU4RB | 11 | 55 | 2032-01-07 | — | Active |
| KU4RC | 11 | 57 | 2027-04-21 | — | Active |
| KU4RD | 11 | 53 | 2000-02-01 | 2002-02-02 | Available |
| KU4RE | 11 | 47 | 2028-04-27 | — | Active |
| KU4RF | 11 | 55 | 2008-03-02 | 2010-03-03 | Available |