District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KS4LO | 10 | 57 | 2014-12-16 | 2016-12-17 | Available |
| KS4LP | 10 | 57 | 2005-01-17 | 2007-01-18 | Available |
| KS4LQ | 10 | 59 | — | — | Available |
| KS4LR | 11 | 53 | 2023-03-23 | 2025-03-24 | Available |
| KS4LS | 11 | 51 | 1998-02-06 | 2000-02-07 | Available |
| KS4LT | 10 | 49 | 1998-08-11 | 2000-08-12 | Available |
| KS4LU | 11 | 53 | 2000-10-13 | 2002-10-14 | Available |
| KS4LV | 10 | 55 | 2033-12-02 | — | Active |
| KS4LW | 10 | 55 | 2014-08-30 | 2016-08-31 | Available |
| KS4LX | 10 | 57 | — | — | Available |
| KS4LY | 10 | 59 | 2012-07-28 | 2014-07-29 | Available |
| KS4LZ | 10 | 57 | — | — | Available |
| KS4MA | 9 | 49 | 2024-05-31 | 2026-06-01 | Available |
| KS4MB | 9 | 53 | — | — | Available |
| KS4MC | 9 | 55 | 2034-10-29 | — | Active (Vanity) |
| KS4MD | 9 | 51 | — | — | Available |
| KS4ME | 9 | 45 | 2003-10-05 | 2005-10-06 | Available |
| KS4MF | 9 | 53 | 2031-02-26 | — | Active |
| KS4MG | 8 | 53 | 2031-03-19 | — | Active |
| KS4MH | 9 | 51 | 2024-11-10 | — | Active |
| KS4MI | 10 | 47 | 1999-01-08 | 2001-01-09 | Available |
| KS4MJ | 10 | 57 | — | — | Available |
| KS4MK | 9 | 53 | 2008-12-31 | 2011-01-01 | Available |
| KS4ML | 9 | 53 | 2033-09-14 | — | Active |
| KS4MM | 8 | 51 | 2032-06-23 | — | Active (Vanity) |
| KS4MN | 10 | 49 | — | — | Available |
| KS4MO | 9 | 55 | 2013-12-21 | 2015-12-22 | Available |
| KS4MP | 9 | 55 | 1998-04-20 | 2000-04-21 | Available |
| KS4MQ | 9 | 57 | 2026-03-23 | — | Active |
| KS4MR | 10 | 51 | 2012-07-14 | 2014-07-15 | Available |
| KS4MS | 10 | 49 | 2013-08-03 | 2015-08-04 | Available |
| KS4MT | 9 | 47 | 2034-03-23 | — | Active |
| KS4MU | 10 | 51 | 2029-01-28 | — | Active |
| KS4MV | 9 | 53 | 2034-10-18 | — | Active |
| KS4MW | 9 | 53 | 2013-11-23 | 2015-11-24 | Available |
| KS4MX | 9 | 55 | 2035-09-10 | — | Active |
| KS4MY | 9 | 57 | — | — | Available |
| KS4MZ | 9 | 55 | 2014-07-09 | 2016-07-10 | Available |
| KS4NA | 11 | 47 | 2013-06-01 | 2015-06-02 | Available |
| KS4NB | 11 | 51 | 2030-11-24 | — | Active (Vanity) |
| KS4NC | 11 | 53 | 2011-02-06 | 2013-02-07 | Available |
| KS4ND | 11 | 49 | 2025-01-22 | — | Active |
| KS4NE | 11 | 43 | 2013-03-23 | 2015-03-24 | Available |
| KS4NF | 11 | 51 | — | — | Available |
| KS4NG | 10 | 51 | 2033-11-16 | — | Active |
| KS4NH | 11 | 49 | 2005-02-02 | 2007-02-03 | Available |
| KS4NI | 12 | 45 | — | — | Available |
| KS4NJ | 12 | 55 | 2013-01-23 | 2015-01-24 | Available |
| KS4NK | 11 | 51 | 2033-05-16 | — | Active |
| KS4NL | 11 | 51 | 2033-10-11 | — | Active |
| KS4NM | 10 | 49 | 2005-02-06 | 2007-02-07 | Available |
| KS4NN | 12 | 47 | — | — | Available |
| KS4NO | 11 | 53 | 2032-11-24 | — | Active |
| KS4NP | 11 | 53 | 2000-11-10 | 2002-11-11 | Available |
| KS4NQ | 11 | 55 | — | — | Available |
| KS4NR | 12 | 49 | 2025-01-12 | — | Active |
| KS4NS | 12 | 47 | 2033-03-03 | — | Active |
| KS4NT | 11 | 45 | 2011-01-28 | 2013-01-29 | Available |
| KS4NU | 12 | 49 | 2012-06-29 | 2014-06-30 | Available |
| KS4NV | 11 | 51 | — | — | Available |
| KS4NW | 11 | 51 | 2031-03-12 | — | Active |
| KS4NX | 11 | 53 | 2034-07-15 | — | Active |
| KS4NY | 11 | 55 | 2014-01-18 | 2016-01-19 | Available |
| KS4NZ | 11 | 53 | 2000-11-07 | 2002-11-08 | Available |
| KS4OA | 10 | 53 | 2000-08-15 | 2002-08-16 | Available |
| KS4OB | 10 | 57 | 2008-09-30 | 2010-10-01 | Available |
| KS4OC | 10 | 59 | 2022-05-26 | 2024-05-27 | Available |
| KS4OD | 10 | 55 | 2018-02-06 | 2020-02-07 | Available |
| KS4OE | 10 | 49 | — | — | Available |
| KS4OF | 10 | 57 | — | — | Available |
| KS4OG | 9 | 57 | 2024-10-06 | 2026-10-07 | Available |
| KS4OH | 10 | 55 | — | — | Available |
| KS4OI | 11 | 51 | — | — | Available |
| KS4OJ | 11 | 61 | 2034-07-15 | — | Active |
| KS4OK | 10 | 57 | 2024-08-06 | 2026-08-07 | Available |
| KS4OL | 10 | 57 | 2017-05-16 | 2019-05-17 | Available |
| KS4OM | 9 | 55 | — | — | Available |
| KS4ON | 11 | 53 | 2034-11-13 | — | Active |
| KS4OO | 10 | 59 | — | — | Available |
| KS4OP | 10 | 59 | 2033-10-12 | — | Active |
| KS4OQ | 10 | 61 | 1997-09-17 | 1999-09-18 | Available |
| KS4OR | 11 | 55 | 2014-09-19 | 2016-09-20 | Available |
| KS4OS | 11 | 53 | 1999-02-03 | 2001-02-04 | Available |
| KS4OT | 10 | 51 | 2033-05-03 | — | Active (Vanity) |
| KS4OU | 11 | 55 | 2004-11-21 | 2006-11-22 | Available |
| KS4OV | 10 | 57 | 2003-03-16 | 2005-03-17 | Available |
| KS4OW | 10 | 57 | 1997-09-17 | 1999-09-18 | Available |
| KS4OX | 10 | 59 | 2024-03-05 | 2026-03-06 | Available |
| KS4OY | 10 | 61 | 2014-07-15 | 2016-07-16 | Available |
| KS4OZ | 10 | 59 | 2014-06-22 | 2016-06-23 | Available |
| KS4PA | 10 | 53 | — | — | Available |
| KS4PB | 10 | 57 | 2034-02-22 | — | Active |
| KS4PC | 10 | 59 | 2032-01-07 | — | Active |
| KS4PD | 10 | 55 | — | — | Available |
| KS4PE | 10 | 49 | 2030-05-27 | — | Active (Vanity) |
| KS4PF | 10 | 57 | 2025-02-22 | — | Active |
| KS4PG | 9 | 57 | 2013-03-19 | 2015-03-20 | Available |
| KS4PH | 10 | 55 | — | — | Available |
| KS4PI | 11 | 51 | 2034-07-15 | — | Active |
| KS4PJ | 11 | 61 | — | — | Available |