District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4ILG | 9 | 53 | 2028-12-21 | — | Active (Vanity) |
| K4ILH | 10 | 51 | 2028-11-27 | — | Active (Vanity) |
| K4ILI | 11 | 47 | 2016-11-05 | 2018-11-06 | Available |
| K4ILJ | 11 | 57 | — | — | Available |
| K4ILK | 10 | 53 | 2036-02-24 | — | Active (Vanity) |
| K4ILL | 10 | 53 | 2029-12-03 | — | Active (Vanity) |
| K4ILM | 9 | 51 | 2027-05-19 | — | Active (Vanity) |
| K4ILN | 11 | 49 | — | — | Available |
| K4ILO | 10 | 55 | 2030-07-24 | — | Active (Vanity) |
| K4ILP | 10 | 55 | 2030-03-14 | — | Active (Vanity) |
| K4ILQ | 10 | 57 | 1999-12-15 | 2001-12-16 | Available |
| K4ILR | 11 | 51 | — | — | Available |
| K4ILS | 11 | 49 | 2034-10-15 | — | Active (Vanity) |
| K4ILT | 10 | 47 | 2027-09-24 | — | Active |
| K4ILU | 11 | 51 | — | — | Available |
| K4ILV | 10 | 53 | — | — | Available |
| K4ILW | 10 | 53 | 2005-12-04 | 2007-12-05 | Available |
| K4ILX | 10 | 55 | 2028-07-17 | — | Active (Vanity) |
| K4ILY | 10 | 57 | — | — | Available |
| K4ILZ | 10 | 55 | 1997-11-10 | 1999-11-11 | Available |
| K4IMA | 9 | 47 | 2030-02-25 | — | Active (Vanity) |
| K4IMB | 9 | 51 | 2033-04-30 | — | Active (Vanity) |
| K4IMC | 9 | 53 | — | — | Available |
| K4IMD | 9 | 49 | — | — | Available |
| K4IME | 9 | 43 | 2027-06-20 | — | Active |
| K4IMF | 9 | 51 | — | — | Available |
| K4IMG | 8 | 51 | 2014-06-16 | 2016-06-17 | Available |
| K4IMH | 9 | 49 | — | — | Available |
| K4IMI | 10 | 45 | 2028-07-20 | — | Active (Vanity) |
| K4IMJ | 10 | 55 | 2024-10-07 | 2026-10-08 | Available |
| K4IMK | 9 | 51 | 2031-09-17 | — | Active |
| K4IML | 9 | 51 | — | — | Available |
| K4IMM | 8 | 49 | 2030-08-15 | — | Active (Vanity) |
| K4IMN | 10 | 47 | — | — | Available |
| K4IMO | 9 | 53 | 2034-10-16 | — | Active (Vanity) |
| K4IMP | 9 | 53 | 2035-04-08 | — | Active (Vanity) |
| K4IMQ | 9 | 55 | — | — | Available |
| K4IMR | 10 | 49 | — | — | Available |
| K4IMS | 10 | 47 | 2006-04-01 | 2008-04-02 | Available |
| K4IMT | 9 | 45 | — | — | Available |
| K4IMU | 10 | 49 | — | — | Available |
| K4IMV | 9 | 51 | — | — | Available |
| K4IMW | 9 | 51 | 2027-08-01 | — | Active (Vanity) |
| K4IMX | 9 | 53 | — | — | Available |
| K4IMY | 9 | 55 | 2011-08-03 | 2013-08-04 | Available |
| K4IMZ | 9 | 53 | 2028-01-08 | — | Active (Vanity) |
| K4INA | 11 | 45 | 2035-04-04 | — | Active (Vanity) |
| K4INB | 11 | 49 | — | — | Available |
| K4INC | 11 | 51 | 2031-07-09 | — | Active (Vanity) |
| K4IND | 11 | 47 | 2030-07-24 | — | Active (Vanity) |
| K4INE | 11 | 41 | 2030-05-25 | — | Active (Vanity) |
| K4INF | 11 | 49 | 2024-04-09 | 2026-04-10 | Available |
| K4ING | 10 | 49 | 2033-02-09 | — | Active |
| K4INH | 11 | 47 | — | — | Available |
| K4INI | 12 | 43 | 2022-07-06 | 2024-07-07 | Available |
| K4INJ | 12 | 53 | 2035-09-20 | — | Active (Vanity) |
| K4INK | 11 | 49 | 2036-01-28 | — | Active (Vanity) |
| K4INL | 11 | 49 | 2006-03-20 | 2008-03-21 | Available |
| K4INM | 10 | 47 | 2015-10-19 | 2017-10-20 | Available |
| K4INN | 12 | 45 | 2030-03-28 | — | Active (Vanity) |
| K4INO | 11 | 51 | — | — | Available |
| K4INP | 11 | 51 | — | — | Available |
| K4INQ | 11 | 53 | 2031-03-09 | — | Active (Vanity) |
| K4INR | 12 | 47 | 2007-03-21 | 2009-03-22 | Available |
| K4INS | 12 | 45 | 2030-04-07 | — | Active (Vanity) |
| K4INT | 11 | 43 | 2027-10-16 | — | Active (Vanity) |
| K4INU | 12 | 47 | 2023-11-28 | 2025-11-29 | Available |
| K4INV | 11 | 49 | 2028-06-03 | — | Active (Vanity) |
| K4INW | 11 | 49 | — | — | Available |
| K4INX | 11 | 51 | 2016-02-05 | 2018-02-06 | Available |
| K4INY | 11 | 53 | — | — | Available |
| K4INZ | 11 | 51 | — | — | Available |
| K4IOA | 10 | 51 | 2030-01-28 | — | Active (Vanity) |
| K4IOB | 10 | 55 | 2018-06-12 | 2020-06-13 | Available |
| K4IOC | 10 | 57 | 2027-03-13 | — | Active |
| K4IOD | 10 | 53 | 2030-09-05 | — | Active (Vanity) |
| K4IOE | 10 | 47 | 2029-02-03 | — | Active (Vanity) |
| K4IOF | 10 | 55 | — | — | Available |
| K4IOG | 9 | 55 | — | — | Available |
| K4IOH | 10 | 53 | — | — | Available |
| K4IOI | 11 | 49 | 2027-02-10 | — | Active |
| K4IOJ | 11 | 59 | — | — | Available |
| K4IOK | 10 | 55 | 2027-09-01 | — | Active (Vanity) |
| K4IOL | 10 | 55 | — | — | Available |
| K4IOM | 9 | 53 | 2033-02-16 | — | Active |
| K4ION | 11 | 51 | 2028-08-21 | — | Active |
| K4IOO | 10 | 57 | 2017-04-03 | 2019-04-04 | Available |
| K4IOP | 10 | 57 | 2013-10-05 | 2015-10-06 | Available |
| K4IOQ | 10 | 59 | 2022-02-04 | 2024-02-05 | Available |
| K4IOR | 11 | 53 | — | — | Available |
| K4IOS | 11 | 51 | 2027-04-07 | — | Active (Vanity) |
| K4IOT | 10 | 49 | — | — | Available |
| K4IOU | 11 | 53 | 2025-02-11 | — | Active |
| K4IOV | 10 | 55 | — | — | Available |
| K4IOW | 10 | 55 | 2017-05-01 | 2019-05-02 | Available |
| K4IOX | 10 | 57 | — | — | Available |
| K4IOY | 10 | 59 | 1998-11-22 | 2000-11-23 | Available |
| K4IOZ | 10 | 57 | — | — | Available |
| K4IPA | 10 | 51 | 2029-02-26 | — | Active (Vanity) |
| K4IPB | 10 | 55 | — | — | Available |