District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KR4OM | 9 | 57 | 2034-03-12 | — | Active |
| KR4ON | 11 | 55 | 2034-03-08 | — | Active |
| KR4OO | 10 | 61 | 2004-03-08 | 2006-03-09 | Available |
| KR4OP | 10 | 61 | 2016-10-21 | 2018-10-22 | Available |
| KR4OQ | 10 | 63 | — | — | Available |
| KR4OR | 11 | 57 | 2024-03-08 | 2026-03-09 | Available |
| KR4OS | 11 | 55 | 2034-03-25 | — | Active |
| KR4OT | 10 | 53 | 2024-03-08 | 2026-03-09 | Available |
| KR4OU | 11 | 57 | 2014-03-15 | 2016-03-16 | Available |
| KR4OV | 10 | 59 | 2034-08-06 | — | Active |
| KR4OW | 10 | 59 | 2034-03-15 | — | Active |
| KR4OX | 10 | 61 | 2024-03-22 | 2026-03-23 | Available |
| KR4OY | 10 | 63 | — | — | Available |
| KR4OZ | 10 | 61 | 2034-03-22 | — | Active |
| KR4PA | 10 | 55 | 2004-03-22 | 2006-03-23 | Available |
| KR4PB | 10 | 59 | 2014-03-22 | 2016-03-23 | Available |
| KR4PC | 10 | 61 | 2022-11-01 | 2024-11-02 | Available |
| KR4PD | 10 | 57 | 2034-03-22 | — | Active |
| KR4PE | 10 | 51 | — | — | Available |
| KR4PF | 10 | 59 | 2025-06-09 | — | Active |
| KR4PG | 9 | 59 | 2024-04-13 | 2026-04-14 | Available |
| KR4PH | 10 | 57 | 2014-03-29 | 2016-03-30 | Available |
| KR4PI | 11 | 53 | 2034-03-29 | — | Active |
| KR4PJ | 11 | 63 | 1998-01-06 | 2000-01-07 | Available |
| KR4PK | 10 | 59 | 2026-02-04 | — | Active (Vanity) |
| KR4PL | 10 | 59 | 1999-04-28 | 2001-04-29 | Available |
| KR4PM | 9 | 57 | 2034-03-29 | — | Active |
| KR4PN | 11 | 55 | 2034-03-29 | — | Active |
| KR4PO | 10 | 61 | 2004-03-29 | 2006-03-30 | Available |
| KR4PP | 10 | 61 | 2034-03-29 | — | Active |
| KR4PQ | 10 | 63 | 2024-03-29 | 2026-03-30 | Available |
| KR4PR | 11 | 57 | — | — | Available |
| KR4PS | 11 | 55 | — | — | Available |
| KR4PT | 10 | 53 | 2034-11-28 | — | Active |
| KR4PU | 11 | 57 | — | — | Available |
| KR4PV | 10 | 59 | 2000-06-09 | 2002-06-10 | Available |
| KR4PW | 10 | 59 | 2024-03-29 | 2026-03-30 | Available |
| KR4PX | 10 | 61 | 2004-03-29 | 2006-03-30 | Available |
| KR4PY | 10 | 63 | — | — | Available |
| KR4PZ | 10 | 61 | 2009-11-13 | 2011-11-14 | Available |
| KR4QA | 10 | 57 | 2014-03-29 | 2016-03-30 | Available |
| KR4QB | 10 | 61 | 2024-03-29 | 2026-03-30 | Available |
| KR4QC | 10 | 63 | 2024-03-29 | 2026-03-30 | Available |
| KR4QD | 10 | 59 | 2034-03-29 | — | Active |
| KR4QE | 10 | 53 | 2034-04-05 | — | Active |
| KR4QF | 10 | 61 | 2014-07-08 | 2016-07-09 | Available |
| KR4QG | 9 | 61 | 2004-04-05 | 2006-04-06 | Available |
| KR4QH | 10 | 59 | 2034-04-05 | — | Active |
| KR4QI | 11 | 55 | 2003-08-15 | 2005-08-16 | Available |
| KR4QJ | 11 | 65 | — | — | Available |
| KR4QK | 10 | 61 | — | — | Available |
| KR4QL | 10 | 61 | 2014-04-05 | 2016-04-06 | Available |
| KR4QM | 9 | 59 | — | — | Available |
| KR4QN | 11 | 57 | 2034-04-05 | — | Active |
| KR4QO | 10 | 63 | 2034-04-05 | — | Active |
| KR4QP | 10 | 63 | 2004-04-05 | 2006-04-06 | Available |
| KR4QQ | 10 | 65 | 2035-09-11 | — | Active |
| KR4QR | 11 | 59 | — | — | Available |
| KR4QS | 11 | 57 | 2004-04-12 | 2006-04-13 | Available |
| KR4QT | 10 | 55 | 2034-04-12 | — | Active |
| KR4QU | 11 | 59 | — | — | Available |
| KR4QV | 10 | 61 | 2034-07-12 | — | Active |
| KR4QW | 10 | 61 | 2024-04-12 | 2026-04-13 | Available |
| KR4QX | 10 | 63 | — | — | Available |
| KR4QY | 10 | 65 | — | — | Available |
| KR4QZ | 10 | 63 | — | — | Available |
| KR4RA | 11 | 51 | 2034-08-15 | — | Active |
| KR4RB | 11 | 55 | — | — | Available |
| KR4RC | 11 | 57 | 2036-10-17 | — | Active (Vanity) |
| KR4RD | 11 | 53 | 2024-03-05 | 2026-03-06 | Available |
| KR4RE | 11 | 47 | 2034-04-19 | — | Active |
| KR4RF | 11 | 55 | 2027-10-28 | — | Active (Vanity) |
| KR4RG | 10 | 55 | 2014-04-26 | 2016-04-27 | Available |
| KR4RH | 11 | 53 | 2024-05-03 | 2026-05-04 | Available |
| KR4RI | 12 | 49 | 2004-05-03 | 2006-05-04 | Available |
| KR4RJ | 12 | 59 | 2032-03-12 | — | Active (Vanity) |
| KR4RK | 11 | 55 | 2028-09-28 | — | Active (Vanity) |
| KR4RL | 11 | 55 | 2026-04-24 | 2028-04-25 | Canceled (grace period) |
| KR4RM | 10 | 53 | 2036-04-10 | — | Active |
| KR4RN | 12 | 51 | — | — | Available |
| KR4RO | 11 | 57 | 2024-05-17 | 2026-05-18 | Available |
| KR4RP | 11 | 57 | — | — | Available |
| KR4RQ | 11 | 59 | 2004-05-12 | 2006-05-13 | Available |
| KR4RR | 12 | 53 | 2035-06-18 | — | Active |
| KR4RS | 12 | 51 | 2034-05-17 | — | Active |
| KR4RT | 11 | 49 | 2003-04-15 | 2005-04-16 | Available |
| KR4RU | 12 | 53 | 2014-05-17 | 2016-05-18 | Available |
| KR4RV | 11 | 55 | — | — | Available |
| KR4RW | 11 | 55 | 1997-09-26 | 1999-09-27 | Available |
| KR4RX | 11 | 57 | 2024-05-17 | 2026-05-18 | Available |
| KR4RY | 11 | 59 | — | — | Available |
| KR4RZ | 11 | 57 | 2034-05-24 | — | Active |
| KR4SA | 11 | 49 | 1998-07-22 | 2000-07-23 | Available |
| KR4SB | 11 | 53 | — | — | Available |
| KR4SC | 11 | 55 | 2031-06-02 | — | Active (Vanity) |
| KR4SD | 11 | 51 | 2004-05-24 | 2006-05-25 | Available |
| KR4SE | 11 | 45 | — | — | Available |
| KR4SF | 11 | 53 | 2036-02-05 | — | Active |
| KR4SG | 10 | 53 | 2024-11-02 | 2026-11-03 | Available |
| KR4SH | 11 | 51 | 2027-06-06 | — | Active (Vanity) |