District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KK4ZG | 8 | 61 | 1998-03-29 | 2000-03-30 | Available |
| KK4ZH | 9 | 59 | 2007-04-08 | 2009-07-06 | Available |
| KK4ZI | 10 | 55 | 2031-04-06 | — | Active (Vanity) |
| KK4ZJ | 10 | 65 | 2008-08-19 | 2010-08-20 | Available |
| KK4ZK | 9 | 61 | 1998-03-29 | 2000-03-30 | Available |
| KK4ZL | 9 | 61 | 2000-07-24 | 2002-07-25 | Available |
| KK4ZM | 8 | 59 | 1998-03-29 | 2000-03-30 | Available |
| KK4ZN | 10 | 57 | 1998-03-29 | 2000-03-30 | Available |
| KK4ZO | 9 | 63 | — | — | Available |
| KK4ZP | 9 | 63 | 2015-09-29 | 2017-09-30 | Available |
| KK4ZQ | 9 | 65 | — | — | Available |
| KK4ZR | 10 | 59 | 2021-04-09 | — | Active |
| KK4ZS | 10 | 57 | 1999-03-21 | 2001-03-22 | Available |
| KK4ZT | 9 | 55 | 2027-11-11 | — | Active |
| KK4ZU | 10 | 59 | 2035-03-17 | — | Active (Vanity) |
| KK4ZV | 9 | 61 | — | — | Available |
| KK4ZW | 9 | 61 | — | — | Available |
| KK4ZX | 9 | 63 | 2034-10-15 | — | Active (Vanity) |
| KK4ZY | 9 | 65 | 2014-03-22 | 2016-03-23 | Available |
| KK4ZZ | 9 | 63 | 2036-10-18 | — | Active |
| KM4AA | 8 | 49 | 2028-05-26 | — | Active |
| KM4AB | 8 | 53 | 2034-06-07 | — | Active |
| KM4AC | 8 | 55 | 2029-06-25 | — | Active (Vanity) |
| KM4AD | 8 | 51 | 2028-11-25 | — | Active |
| KM4AE | 8 | 45 | 2036-06-07 | — | Active (Vanity) |
| KM4AF | 8 | 53 | 2027-12-22 | — | Active |
| KM4AG | 7 | 53 | 2028-02-25 | — | Active |
| KM4AH | 8 | 51 | 2027-10-31 | — | Active (Vanity) |
| KM4AI | 9 | 47 | 2028-07-10 | — | Active |
| KM4AJ | 9 | 57 | 2035-11-28 | — | Active (Vanity) |
| KM4AK | 8 | 53 | — | — | Available |
| KM4AL | 8 | 53 | 2034-06-25 | — | Active (Vanity) |
| KM4AM | 7 | 51 | 2036-02-07 | — | Active (Vanity) |
| KM4AN | 9 | 49 | — | — | Available |
| KM4AO | 8 | 55 | 2005-01-21 | 2007-01-22 | Available |
| KM4AP | 8 | 55 | 2028-04-09 | — | Active |
| KM4AQ | 8 | 57 | 2018-01-15 | 2020-01-16 | Available |
| KM4AR | 9 | 51 | 2018-01-06 | 2020-01-07 | Available |
| KM4AS | 9 | 49 | 2008-05-28 | 2010-05-29 | Available |
| KM4AT | 8 | 47 | 2024-12-24 | 2026-12-25 | Canceled (grace period) |
| KM4AU | 9 | 51 | 1997-08-21 | 1999-08-22 | Available |
| KM4AV | 8 | 53 | — | — | Available |
| KM4AW | 8 | 53 | 2028-03-12 | — | Active |
| KM4AX | 8 | 55 | 2028-04-09 | — | Active |
| KM4AY | 8 | 57 | — | — | Available |
| KM4AZ | 8 | 55 | 2031-02-12 | — | Active |
| KM4BA | 8 | 53 | 2031-04-20 | — | Active |
| KM4BB | 8 | 57 | 2036-03-25 | — | Active (Vanity) |
| KM4BC | 8 | 59 | 2028-07-09 | — | Active |
| KM4BD | 8 | 55 | 2018-03-12 | 2020-03-13 | Available |
| KM4BE | 8 | 49 | 2036-03-13 | — | Active (Vanity) |
| KM4BF | 8 | 57 | 2010-03-13 | 2012-03-14 | Available |
| KM4BG | 7 | 57 | 1999-03-21 | 2001-03-22 | Available |
| KM4BH | 8 | 55 | 2031-04-06 | — | Active (Vanity) |
| KM4BI | 9 | 51 | 2018-04-22 | 2020-04-23 | Available |
| KM4BJ | 9 | 61 | 2035-04-04 | — | Active (Vanity) |
| KM4BK | 8 | 57 | — | — | Available |
| KM4BL | 8 | 57 | 2028-04-07 | — | Active |
| KM4BM | 7 | 55 | — | — | Available |
| KM4BN | 9 | 53 | 2002-07-20 | 2004-07-21 | Available |
| KM4BO | 8 | 59 | 1998-05-10 | 2000-05-11 | Available |
| KM4BP | 8 | 59 | — | — | Available |
| KM4BQ | 8 | 61 | 1999-08-02 | 2001-08-03 | Available |
| KM4BR | 9 | 55 | 2028-01-30 | — | Active |
| KM4BS | 9 | 53 | 2034-05-17 | — | Active |
| KM4BT | 8 | 51 | 2001-03-22 | 2003-03-23 | Available |
| KM4BU | 9 | 55 | 2028-12-23 | — | Active |
| KM4BV | 8 | 57 | 2008-01-16 | 2010-01-17 | Available |
| KM4BW | 8 | 57 | 1997-09-17 | 1999-09-18 | Available |
| KM4BX | 8 | 59 | 1998-05-17 | 2000-05-18 | Available |
| KM4BY | 8 | 61 | — | — | Available |
| KM4BZ | 8 | 59 | 2028-01-23 | — | Active |
| KM4CA | 8 | 55 | 2034-09-17 | — | Active (Vanity) |
| KM4CB | 8 | 59 | 2035-07-11 | — | Active (Vanity) |
| KM4CC | 8 | 61 | 2031-07-17 | — | Active (Vanity) |
| KM4CD | 8 | 57 | — | — | Available |
| KM4CE | 8 | 51 | 2028-01-16 | — | Active |
| KM4CF | 8 | 59 | — | — | Available |
| KM4CG | 7 | 59 | 2030-04-03 | — | Active |
| KM4CH | 8 | 57 | 2032-08-21 | — | Active |
| KM4CI | 9 | 53 | 2022-08-04 | 2024-08-05 | Available |
| KM4CJ | 9 | 63 | 2032-09-01 | — | Active |
| KM4CK | 8 | 59 | 2029-11-02 | — | Active (Vanity) |
| KM4CL | 8 | 59 | 2028-07-30 | — | Active |
| KM4CM | 7 | 57 | 2020-01-28 | 2022-01-29 | Available |
| KM4CN | 9 | 55 | 2018-02-25 | 2020-02-26 | Available |
| KM4CO | 8 | 61 | 2008-02-27 | 2010-02-28 | Available |
| KM4CP | 8 | 61 | 2028-06-19 | — | Active (Vanity) |
| KM4CQ | 8 | 63 | 2018-02-25 | 2020-02-26 | Available |
| KM4CR | 9 | 57 | 1998-12-27 | 2000-12-28 | Available |
| KM4CS | 9 | 55 | 2028-02-23 | — | Active |
| KM4CT | 8 | 53 | 2028-02-25 | — | Active |
| KM4CU | 9 | 57 | 2029-07-09 | — | Active |
| KM4CV | 8 | 59 | 2010-02-20 | 2012-02-21 | Available |
| KM4CW | 8 | 59 | 2028-03-02 | — | Active |
| KM4CX | 8 | 61 | 2022-05-05 | 2024-05-06 | Available |
| KM4CY | 8 | 63 | 2000-08-15 | 2002-08-16 | Available |
| KM4CZ | 8 | 61 | — | — | Available |
| KM4DA | 8 | 51 | 2032-08-17 | — | Active |
| KM4DB | 8 | 55 | 2018-01-23 | 2020-01-24 | Available |