District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KS4HS | 11 | 49 | 2013-02-16 | 2015-02-17 | Available |
| KS4HT | 10 | 47 | 2029-07-15 | — | Active |
| KS4HU | 11 | 51 | 2014-07-15 | 2016-07-16 | Available |
| KS4HV | 10 | 53 | 2023-03-16 | 2025-03-17 | Available |
| KS4HW | 10 | 53 | 2033-01-26 | — | Active |
| KS4HX | 10 | 55 | — | — | Available |
| KS4HY | 10 | 57 | 2026-11-29 | — | Active |
| KS4HZ | 10 | 55 | 2013-06-08 | 2015-06-09 | Available |
| KS4IA | 11 | 45 | 2002-05-30 | 2004-05-31 | Available |
| KS4IB | 11 | 49 | 2023-05-21 | 2025-05-22 | Available |
| KS4IC | 11 | 51 | 2035-01-07 | — | Active |
| KS4ID | 11 | 47 | 2033-12-21 | — | Active |
| KS4IE | 11 | 41 | 2012-12-08 | 2014-12-09 | Available |
| KS4IF | 11 | 49 | — | — | Available |
| KS4IG | 10 | 49 | 2034-10-03 | — | Active |
| KS4IH | 11 | 47 | 2004-07-07 | 2006-07-08 | Available |
| KS4II | 12 | 43 | 2034-02-22 | — | Active |
| KS4IJ | 12 | 53 | 2036-08-05 | — | Active |
| KS4IK | 11 | 49 | 2004-03-29 | 2006-03-30 | Available |
| KS4IL | 11 | 49 | 1999-03-14 | 2001-03-15 | Available |
| KS4IM | 10 | 47 | — | — | Available |
| KS4IN | 12 | 45 | 2033-09-14 | — | Active |
| KS4IO | 11 | 51 | 2034-01-18 | — | Active |
| KS4IP | 11 | 51 | 2022-08-11 | 2024-08-12 | Available |
| KS4IQ | 11 | 53 | 2013-01-19 | 2015-01-20 | Available |
| KS4IR | 12 | 47 | 2007-02-13 | 2009-02-14 | Available |
| KS4IS | 12 | 45 | 2024-03-05 | 2026-03-06 | Available |
| KS4IT | 11 | 43 | 2020-03-24 | 2022-03-25 | Available |
| KS4IU | 12 | 47 | 2014-05-17 | 2016-05-18 | Available |
| KS4IV | 11 | 49 | 2003-12-21 | 2005-12-22 | Available |
| KS4IW | 11 | 49 | 2031-06-04 | — | Active |
| KS4IX | 11 | 51 | 2006-01-19 | 2008-01-20 | Available |
| KS4IY | 11 | 53 | 2034-03-29 | — | Active |
| KS4IZ | 11 | 51 | 2014-12-14 | 2016-12-15 | Available |
| KS4JA | 11 | 55 | 2024-06-08 | 2026-06-09 | Available |
| KS4JB | 11 | 59 | 2024-03-15 | 2026-03-16 | Available |
| KS4JC | 11 | 61 | 2024-03-05 | 2026-03-06 | Available |
| KS4JD | 11 | 57 | 2014-10-06 | 2016-10-07 | Available |
| KS4JE | 11 | 51 | — | — | Available |
| KS4JF | 11 | 59 | 1998-05-03 | 2000-05-04 | Available |
| KS4JG | 10 | 59 | 2033-05-11 | — | Active |
| KS4JH | 11 | 57 | 2024-07-07 | 2026-07-08 | Available |
| KS4JI | 12 | 53 | 2030-02-20 | — | Active |
| KS4JJ | 12 | 63 | 2013-07-15 | 2015-07-16 | Available |
| KS4JK | 11 | 59 | 1997-11-25 | 1999-11-26 | Available |
| KS4JL | 11 | 59 | 2022-08-04 | 2024-08-05 | Available |
| KS4JM | 10 | 57 | 2034-04-26 | — | Active (Vanity) |
| KS4JN | 12 | 55 | 2024-06-22 | 2026-06-23 | Available |
| KS4JO | 11 | 61 | 2004-10-25 | 2006-10-26 | Available |
| KS4JP | 11 | 61 | 2000-06-13 | 2002-06-14 | Available |
| KS4JQ | 11 | 63 | 2023-09-21 | 2025-09-22 | Available |
| KS4JR | 12 | 57 | 2014-02-01 | 2016-02-02 | Available |
| KS4JS | 12 | 55 | — | — | Available |
| KS4JT | 11 | 53 | 2000-07-28 | 2002-07-29 | Available |
| KS4JU | 12 | 57 | 2033-08-24 | — | Active |
| KS4JV | 11 | 59 | 2014-01-21 | 2016-01-22 | Available |
| KS4JW | 11 | 59 | 2013-08-24 | 2015-08-25 | Available |
| KS4JX | 11 | 61 | 2034-12-22 | — | Active |
| KS4JY | 11 | 63 | 2023-08-17 | 2025-08-18 | Available |
| KS4JZ | 11 | 61 | 2003-12-14 | 2005-12-15 | Available |
| KS4KA | 10 | 51 | 1997-11-13 | 1999-11-14 | Available |
| KS4KB | 10 | 55 | 2014-09-02 | 2016-09-03 | Available |
| KS4KC | 10 | 57 | 2014-08-11 | 2016-08-12 | Available |
| KS4KD | 10 | 53 | 2036-03-24 | — | Active (Vanity) |
| KS4KE | 10 | 47 | 2003-11-30 | 2005-12-01 | Available |
| KS4KF | 10 | 55 | 2000-12-16 | 2002-12-17 | Available |
| KS4KG | 9 | 55 | 2023-06-01 | 2025-06-02 | Available |
| KS4KH | 10 | 53 | 2024-08-10 | 2026-08-11 | Available |
| KS4KI | 11 | 49 | — | — | Available |
| KS4KJ | 11 | 59 | 2033-09-30 | — | Active |
| KS4KK | 10 | 55 | 2004-08-22 | 2006-08-23 | Available |
| KS4KL | 10 | 55 | 1997-10-24 | 1999-10-25 | Available |
| KS4KM | 9 | 53 | 2027-11-19 | — | Active |
| KS4KN | 11 | 51 | 2033-10-19 | — | Active |
| KS4KO | 10 | 57 | 2014-02-15 | 2016-02-16 | Available |
| KS4KP | 10 | 57 | 2033-06-01 | — | Active |
| KS4KQ | 10 | 59 | 2034-07-22 | — | Active |
| KS4KR | 11 | 53 | 1998-12-02 | 2000-12-03 | Available |
| KS4KS | 11 | 51 | 2024-06-18 | 2026-06-19 | Available |
| KS4KT | 10 | 49 | 2034-09-14 | — | Active |
| KS4KU | 11 | 53 | 2029-06-29 | — | Active (Vanity) |
| KS4KV | 10 | 55 | — | — | Available |
| KS4KW | 10 | 55 | 2004-02-08 | 2006-02-09 | Available |
| KS4KX | 10 | 57 | 2008-08-19 | 2010-08-20 | Available |
| KS4KY | 10 | 59 | 2027-07-01 | — | Active (Vanity) |
| KS4KZ | 10 | 57 | 2028-07-31 | — | Active |
| KS4LA | 10 | 51 | 2036-10-17 | — | Active |
| KS4LB | 10 | 55 | 2023-06-19 | 2025-06-20 | Available |
| KS4LC | 10 | 57 | 2014-05-04 | 2016-05-05 | Available |
| KS4LD | 10 | 53 | 2017-03-25 | 2019-03-26 | Available |
| KS4LE | 10 | 47 | 2009-01-03 | 2011-01-04 | Available |
| KS4LF | 10 | 55 | 2011-02-12 | 2013-02-13 | Available |
| KS4LG | 9 | 55 | — | — | Available |
| KS4LH | 10 | 53 | 2004-04-26 | 2006-04-27 | Available |
| KS4LI | 11 | 49 | 2013-12-28 | 2015-12-29 | Available |
| KS4LJ | 11 | 59 | 2033-10-05 | — | Active |
| KS4LK | 10 | 55 | 2035-01-17 | — | Active |
| KS4LL | 10 | 55 | — | — | Available |
| KS4LM | 9 | 53 | 2001-08-28 | 2003-08-29 | Available |
| KS4LN | 11 | 51 | 2024-03-05 | 2026-03-06 | Available |