District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KK4RO | 10 | 59 | 1997-09-29 | 1999-09-30 | Available |
| KK4RP | 10 | 59 | 2028-03-03 | — | Active |
| KK4RQ | 10 | 61 | 2011-12-17 | 2013-12-18 | Available |
| KK4RR | 11 | 55 | 2027-07-21 | — | Active (Vanity) |
| KK4RS | 11 | 53 | — | — | Available |
| KK4RT | 10 | 51 | 2032-08-25 | — | Active |
| KK4RU | 11 | 55 | 2017-06-24 | 2019-06-25 | Available |
| KK4RV | 10 | 57 | 2027-06-27 | — | Active |
| KK4RW | 10 | 57 | 2017-08-08 | 2019-08-09 | Available |
| KK4RX | 10 | 59 | 1997-10-06 | 1999-10-07 | Available |
| KK4RY | 10 | 61 | 1997-09-17 | 1999-09-18 | Available |
| KK4RZ | 10 | 59 | 2003-04-27 | 2005-04-28 | Available |
| KK4SA | 10 | 51 | 2022-03-17 | 2024-03-18 | Available |
| KK4SB | 10 | 55 | 2032-05-25 | — | Active (Vanity) |
| KK4SC | 10 | 57 | 2027-12-02 | — | Active (Vanity) |
| KK4SD | 10 | 53 | 2032-03-08 | — | Active (Vanity) |
| KK4SE | 10 | 47 | 1997-10-13 | 1999-10-14 | Available |
| KK4SF | 10 | 55 | — | — | Available |
| KK4SG | 9 | 55 | 2028-09-18 | — | Active (Vanity) |
| KK4SH | 10 | 53 | 2027-10-21 | — | Active |
| KK4SI | 11 | 49 | 2027-05-07 | — | Active |
| KK4SJ | 11 | 59 | 2029-12-18 | — | Active |
| KK4SK | 10 | 55 | — | — | Available |
| KK4SL | 10 | 55 | — | — | Available |
| KK4SM | 9 | 53 | 2034-07-23 | — | Active (Vanity) |
| KK4SN | 11 | 51 | 2027-06-20 | — | Active |
| KK4SO | 10 | 57 | 2030-07-03 | — | Active |
| KK4SP | 10 | 57 | 2033-07-27 | — | Active (Vanity) |
| KK4SQ | 10 | 59 | 2017-05-27 | 2019-05-28 | Available |
| KK4SR | 11 | 53 | 2018-10-23 | 2020-10-24 | Available |
| KK4SS | 11 | 51 | 2028-04-22 | — | Active (Vanity) |
| KK4ST | 10 | 49 | 2034-07-11 | — | Active (Vanity) |
| KK4SU | 11 | 53 | 2028-03-18 | — | Active |
| KK4SV | 10 | 55 | 2027-08-05 | — | Active |
| KK4SW | 10 | 55 | 2036-08-05 | — | Active (Vanity) |
| KK4SX | 10 | 57 | 1997-11-03 | 1999-11-04 | Available |
| KK4SY | 10 | 59 | 1998-05-31 | 2000-06-01 | Available |
| KK4SZ | 10 | 57 | 2018-09-24 | 2020-09-25 | Available |
| KK4TA | 9 | 49 | 2031-03-27 | — | Active (Vanity) |
| KK4TB | 9 | 53 | 2019-03-30 | 2021-03-31 | Available |
| KK4TC | 9 | 55 | 2028-04-08 | — | Active |
| KK4TD | 9 | 51 | 2031-06-23 | — | Active |
| KK4TE | 9 | 45 | 2036-03-14 | — | Active |
| KK4TF | 9 | 53 | 2008-03-23 | 2010-03-24 | Available |
| KK4TG | 8 | 53 | 2027-07-18 | — | Active |
| KK4TH | 9 | 51 | 2030-08-18 | — | Active (Vanity) |
| KK4TI | 10 | 47 | 2007-05-08 | 2009-05-09 | Available |
| KK4TJ | 10 | 57 | 2027-07-25 | — | Active |
| KK4TK | 9 | 53 | 1999-05-26 | 2001-05-27 | Available |
| KK4TL | 9 | 53 | 2029-12-03 | — | Active |
| KK4TM | 8 | 51 | 2028-01-19 | — | Active |
| KK4TN | 10 | 49 | 2027-08-11 | — | Active |
| KK4TO | 9 | 55 | 2028-08-07 | — | Active |
| KK4TP | 9 | 55 | 1997-11-24 | 1999-11-25 | Available |
| KK4TQ | 9 | 57 | 2027-10-21 | — | Active |
| KK4TR | 10 | 51 | 2032-03-01 | — | Active (Vanity) |
| KK4TS | 10 | 49 | 2010-09-14 | 2012-09-15 | Available |
| KK4TT | 9 | 47 | 2033-12-30 | — | Active (Vanity) |
| KK4TU | 10 | 51 | 2007-09-03 | 2009-09-04 | Available |
| KK4TV | 9 | 53 | — | — | Available |
| KK4TW | 9 | 53 | 2030-12-18 | — | Active (Vanity) |
| KK4TX | 9 | 55 | 2034-08-23 | — | Active (Vanity) |
| KK4TY | 9 | 57 | 2034-05-24 | — | Active |
| KK4TZ | 9 | 55 | 2028-07-09 | — | Active |
| KK4UA | 10 | 53 | 2007-10-09 | 2009-10-10 | Available |
| KK4UB | 10 | 57 | 2024-03-05 | 2026-03-06 | Available |
| KK4UC | 10 | 59 | 2008-01-23 | 2010-01-24 | Available |
| KK4UD | 10 | 55 | 2008-01-06 | 2010-01-07 | Available |
| KK4UE | 10 | 49 | 2027-09-16 | — | Active |
| KK4UF | 10 | 57 | 2028-01-29 | — | Active |
| KK4UG | 9 | 57 | 2007-08-22 | 2009-08-23 | Available |
| KK4UH | 10 | 55 | 2017-09-24 | 2019-09-25 | Available |
| KK4UI | 11 | 51 | 2034-03-29 | — | Active |
| KK4UJ | 11 | 61 | 2019-03-03 | 2021-03-04 | Available |
| KK4UK | 10 | 57 | — | — | Available |
| KK4UL | 10 | 57 | 2001-11-12 | 2003-11-13 | Available |
| KK4UM | 9 | 55 | 2015-06-13 | 2017-06-14 | Available |
| KK4UN | 11 | 53 | 2000-02-26 | 2002-02-27 | Available |
| KK4UO | 10 | 59 | 2017-09-05 | 2019-09-06 | Available |
| KK4UP | 10 | 59 | 2018-08-04 | 2020-08-05 | Available |
| KK4UQ | 10 | 61 | 2027-09-26 | — | Active |
| KK4UR | 11 | 55 | — | — | Available |
| KK4US | 11 | 53 | 2028-09-08 | — | Active |
| KK4UT | 10 | 51 | 2030-10-23 | — | Active |
| KK4UU | 11 | 55 | 2020-09-26 | 2022-09-27 | Available |
| KK4UV | 10 | 57 | 2032-09-01 | — | Active |
| KK4UW | 10 | 57 | 2028-02-03 | — | Active |
| KK4UX | 10 | 59 | 2027-09-12 | — | Active |
| KK4UY | 10 | 61 | 2007-12-23 | 2009-12-24 | Available |
| KK4UZ | 10 | 59 | 2002-10-13 | 2004-10-14 | Available |
| KK4VA | 9 | 55 | 2035-07-11 | — | Active (Vanity) |
| KK4VB | 9 | 59 | 2032-02-14 | — | Active (Vanity) |
| KK4VC | 9 | 61 | 1997-12-22 | 1999-12-23 | Available |
| KK4VD | 9 | 57 | — | — | Available |
| KK4VE | 9 | 51 | 2029-12-05 | — | Active |
| KK4VF | 9 | 59 | 2030-06-01 | — | Active |
| KK4VG | 8 | 59 | 2017-10-21 | 2019-10-22 | Available |
| KK4VH | 9 | 57 | 2034-01-04 | — | Active |
| KK4VI | 10 | 53 | 2017-09-16 | 2019-09-17 | Available |
| KK4VJ | 10 | 63 | 2011-06-04 | 2013-06-05 | Available |