District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4CBW | 9 | 61 | 2028-12-11 | — | Active (Vanity) |
| K4CBX | 9 | 63 | — | — | Available |
| K4CBY | 9 | 65 | 2024-05-03 | 2026-05-04 | Available |
| K4CBZ | 9 | 63 | 2029-04-17 | — | Active (Vanity) |
| K4CCA | 9 | 59 | 2036-02-10 | — | Active (Vanity) |
| K4CCB | 9 | 63 | 2019-06-09 | 2021-06-10 | Available |
| K4CCC | 9 | 65 | 2032-10-01 | — | Active (Vanity) |
| K4CCD | 9 | 61 | 2027-02-22 | — | Active (Vanity) |
| K4CCE | 9 | 55 | — | — | Available |
| K4CCF | 9 | 63 | 2027-10-01 | — | Active (Vanity) |
| K4CCG | 8 | 63 | 2033-03-26 | — | Active (Vanity) |
| K4CCH | 9 | 61 | 2029-11-20 | — | Active (Vanity) |
| K4CCI | 10 | 57 | 2028-06-26 | — | Active (Vanity) |
| K4CCJ | 10 | 67 | 2036-12-29 | — | Active (Vanity) |
| K4CCK | 9 | 63 | 2026-02-02 | — | Active (Vanity) |
| K4CCL | 9 | 63 | 2032-03-04 | — | Active (Vanity) |
| K4CCM | 8 | 61 | 2026-10-29 | — | Active (Vanity) |
| K4CCN | 10 | 59 | 2032-03-15 | — | Active (Vanity) |
| K4CCO | 9 | 65 | 2028-04-22 | — | Active |
| K4CCP | 9 | 65 | 2029-02-16 | — | Active (Vanity) |
| K4CCQ | 9 | 67 | 2033-12-30 | — | Active (Vanity) |
| K4CCR | 10 | 61 | 2028-03-24 | — | Active (Vanity) |
| K4CCS | 10 | 59 | 2034-07-26 | — | Active (Vanity) |
| K4CCT | 9 | 57 | 2030-07-25 | — | Active (Vanity) |
| K4CCU | 10 | 61 | 2006-06-18 | 2008-06-19 | Available |
| K4CCV | 9 | 63 | — | — | Available |
| K4CCW | 9 | 63 | 2035-07-31 | — | Active (Vanity) |
| K4CCX | 9 | 65 | 2024-05-07 | 2026-05-08 | Available |
| K4CCY | 9 | 67 | 2015-06-01 | 2017-06-02 | Available |
| K4CCZ | 9 | 65 | 2007-11-10 | 2009-11-11 | Available |
| K4CDA | 9 | 55 | 2027-08-21 | — | Active (Vanity) |
| K4CDB | 9 | 59 | 2024-10-16 | 2026-10-17 | Available |
| K4CDC | 9 | 61 | 2026-12-13 | — | Active (Vanity) |
| K4CDD | 9 | 57 | 2032-09-02 | — | Active (Vanity) |
| K4CDE | 9 | 51 | 2032-04-12 | — | Active (Vanity) |
| K4CDF | 9 | 59 | 2027-10-16 | — | Active |
| K4CDG | 8 | 59 | 2030-11-21 | — | Active (Vanity) |
| K4CDH | 9 | 57 | 2028-05-09 | — | Active (Vanity) |
| K4CDI | 10 | 53 | 2016-02-15 | 2018-02-16 | Available |
| K4CDJ | 10 | 63 | — | — | Available |
| K4CDK | 9 | 59 | 2030-09-29 | — | Active (Vanity) |
| K4CDL | 9 | 59 | 2035-02-06 | — | Active |
| K4CDM | 8 | 57 | 2034-12-24 | — | Active (Vanity) |
| K4CDN | 10 | 55 | 2031-07-12 | — | Active (Vanity) |
| K4CDO | 9 | 61 | — | — | Available |
| K4CDP | 9 | 61 | — | — | Available |
| K4CDQ | 9 | 63 | 2035-09-15 | — | Active (Vanity) |
| K4CDR | 10 | 57 | 2024-03-05 | 2026-03-06 | Available |
| K4CDS | 10 | 55 | 2034-07-17 | — | Active (Vanity) |
| K4CDT | 9 | 53 | 2034-03-28 | — | Active (Vanity) |
| K4CDU | 10 | 57 | — | — | Available |
| K4CDV | 9 | 59 | — | — | Available |
| K4CDW | 9 | 59 | 2032-04-26 | — | Active (Vanity) |
| K4CDX | 9 | 61 | 2036-12-18 | — | Active (Vanity) |
| K4CDY | 9 | 63 | — | — | Available |
| K4CDZ | 9 | 61 | — | — | Available |
| K4CEA | 9 | 49 | 2031-07-17 | — | Active (Vanity) |
| K4CEB | 9 | 53 | 2028-03-04 | — | Active (Vanity) |
| K4CEC | 9 | 55 | 2029-05-06 | — | Active |
| K4CED | 9 | 51 | 2025-11-20 | — | Active |
| K4CEE | 9 | 45 | 2033-01-10 | — | Active (Vanity) |
| K4CEF | 9 | 53 | 2028-10-12 | — | Active (Vanity) |
| K4CEG | 8 | 53 | 2031-11-04 | — | Active (Vanity) |
| K4CEH | 9 | 51 | 2026-06-20 | — | Active (Vanity) |
| K4CEI | 10 | 47 | 2024-05-24 | 2026-05-25 | Available |
| K4CEJ | 10 | 57 | 2026-06-06 | — | Active (Vanity) |
| K4CEK | 9 | 53 | 2027-10-31 | — | Active |
| K4CEL | 9 | 53 | 2028-01-08 | — | Active (Vanity) |
| K4CEM | 8 | 51 | 2035-01-21 | — | Active (Vanity) |
| K4CEN | 10 | 49 | — | — | Available |
| K4CEO | 9 | 55 | 2035-04-15 | — | Active (Vanity) |
| K4CEP | 9 | 55 | 2034-03-06 | — | Active (Vanity) |
| K4CEQ | 9 | 57 | 2010-05-29 | 2012-05-30 | Available |
| K4CER | 10 | 51 | 2029-02-03 | — | Active (Vanity) |
| K4CES | 10 | 49 | 2035-07-30 | — | Active (Vanity) |
| K4CET | 9 | 47 | 2033-07-29 | — | Active (Vanity) |
| K4CEU | 10 | 51 | — | — | Available |
| K4CEV | 9 | 53 | — | — | Available |
| K4CEW | 9 | 53 | 2016-02-07 | 2018-02-08 | Available |
| K4CEX | 9 | 55 | 2013-05-18 | 2015-05-19 | Available |
| K4CEY | 9 | 57 | 2027-05-28 | — | Active |
| K4CEZ | 9 | 55 | 2014-09-20 | 2016-09-21 | Available |
| K4CFA | 9 | 57 | 2034-09-14 | — | Active |
| K4CFB | 9 | 61 | 2028-01-09 | — | Active (Vanity) |
| K4CFC | 9 | 63 | 2030-11-03 | — | Active (Vanity) |
| K4CFD | 9 | 59 | 2029-04-15 | — | Active |
| K4CFE | 9 | 53 | 2029-09-30 | — | Active (Vanity) |
| K4CFF | 9 | 61 | 2035-08-26 | — | Active (Vanity) |
| K4CFG | 8 | 61 | 2028-06-19 | — | Active (Vanity) |
| K4CFH | 9 | 59 | 2031-02-03 | — | Active (Vanity) |
| K4CFI | 10 | 55 | 2027-09-21 | — | Active (Vanity) |
| K4CFJ | 10 | 65 | 2022-03-28 | 2024-03-29 | Available |
| K4CFK | 9 | 61 | 2027-08-15 | — | Active (Vanity) |
| K4CFL | 9 | 61 | 2034-12-22 | — | Active |
| K4CFM | 8 | 59 | 2029-03-05 | — | Active (Vanity) |
| K4CFN | 10 | 57 | 2031-07-26 | — | Active (Vanity) |
| K4CFO | 9 | 63 | 2025-12-15 | — | Active |
| K4CFP | 9 | 63 | 2032-11-08 | — | Active (Vanity) |
| K4CFQ | 9 | 65 | 2020-11-27 | 2022-11-28 | Available |
| K4CFR | 10 | 59 | 2030-06-01 | — | Active (Vanity) |