District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| K4BMM | 7 | 55 | 2033-11-25 | — | Active (Vanity) |
| K4BMN | 9 | 53 | 2028-08-07 | — | Active |
| K4BMO | 8 | 59 | 2025-01-21 | — | Active |
| K4BMP | 8 | 59 | 2027-11-01 | — | Active (Vanity) |
| K4BMQ | 8 | 61 | — | — | Available |
| K4BMR | 9 | 55 | 2028-03-03 | — | Active (Vanity) |
| K4BMS | 9 | 53 | 2031-08-13 | — | Active (Vanity) |
| K4BMT | 8 | 51 | 2033-10-19 | — | Active |
| K4BMU | 9 | 55 | 2034-10-24 | — | Active |
| K4BMV | 8 | 57 | 2030-05-11 | — | Active (Vanity) |
| K4BMW | 8 | 57 | 2028-09-01 | — | Active (Vanity) |
| K4BMX | 8 | 59 | 2029-12-04 | — | Active (Vanity) |
| K4BMY | 8 | 61 | — | — | Available |
| K4BMZ | 8 | 59 | 2027-11-04 | — | Active |
| K4BNA | 10 | 51 | 2036-12-10 | — | Active (Vanity) |
| K4BNB | 10 | 55 | 2035-09-29 | — | Active (Vanity) |
| K4BNC | 10 | 57 | 2035-05-19 | — | Active |
| K4BND | 10 | 53 | 2030-09-18 | — | Active (Vanity) |
| K4BNE | 10 | 47 | 2016-07-02 | 2018-07-03 | Available |
| K4BNF | 10 | 55 | 2027-10-27 | — | Active (Vanity) |
| K4BNG | 9 | 55 | 2030-02-15 | — | Active (Vanity) |
| K4BNH | 10 | 53 | — | — | Available |
| K4BNI | 11 | 49 | 2017-02-24 | 2019-02-25 | Available |
| K4BNJ | 11 | 59 | 2030-04-02 | — | Active (Vanity) |
| K4BNK | 10 | 55 | 2036-10-06 | — | Active (Vanity) |
| K4BNL | 10 | 55 | 2024-07-08 | 2026-07-09 | Available |
| K4BNM | 9 | 53 | 1997-08-04 | 1999-08-05 | Available |
| K4BNN | 11 | 51 | 2028-09-29 | — | Active (Vanity) |
| K4BNO | 10 | 57 | — | — | Available |
| K4BNP | 10 | 57 | 2016-08-06 | 2018-08-07 | Available |
| K4BNQ | 10 | 59 | — | — | Available |
| K4BNR | 11 | 53 | 2022-12-21 | 2024-12-22 | Available |
| K4BNS | 11 | 51 | 2026-10-07 | — | Active |
| K4BNT | 10 | 49 | 2034-05-24 | — | Active |
| K4BNU | 11 | 53 | — | — | Available |
| K4BNV | 10 | 55 | 2030-05-22 | — | Active |
| K4BNW | 10 | 55 | — | — | Available |
| K4BNX | 10 | 57 | 2018-01-09 | 2020-01-10 | Available |
| K4BNY | 10 | 59 | 2008-02-26 | 2010-02-27 | Available |
| K4BNZ | 10 | 57 | 2029-06-25 | — | Active (Vanity) |
| K4BOA | 9 | 57 | 2026-07-02 | 2028-07-03 | Canceled (grace period) |
| K4BOB | 9 | 61 | 2028-08-09 | — | Active (Vanity) |
| K4BOC | 9 | 63 | — | — | Available |
| K4BOD | 9 | 59 | — | — | Available |
| K4BOE | 9 | 53 | 2029-09-21 | — | Active (Vanity) |
| K4BOF | 9 | 61 | 2035-04-22 | — | Active (Vanity) |
| K4BOG | 8 | 61 | 2031-08-31 | — | Active (Vanity) |
| K4BOH | 9 | 59 | 2025-10-06 | — | Active (Vanity) |
| K4BOI | 10 | 55 | 2027-01-07 | — | Active |
| K4BOJ | 10 | 65 | 2036-07-28 | — | Active (Vanity) |
| K4BOK | 9 | 61 | 2032-07-13 | — | Active |
| K4BOL | 9 | 61 | — | — | Available |
| K4BOM | 8 | 59 | 2035-12-12 | — | Active (Vanity) |
| K4BON | 10 | 57 | 2028-08-05 | — | Active (Vanity) |
| K4BOO | 9 | 63 | 2034-12-30 | — | Active (Vanity) |
| K4BOP | 9 | 63 | 2034-09-13 | — | Active |
| K4BOQ | 9 | 65 | — | — | Available |
| K4BOR | 10 | 59 | — | — | Available |
| K4BOS | 10 | 57 | 2035-01-11 | — | Active (Vanity) |
| K4BOT | 9 | 55 | 2036-01-10 | — | Active (Vanity) |
| K4BOU | 10 | 59 | — | — | Available |
| K4BOV | 9 | 61 | 2035-09-19 | — | Active |
| K4BOW | 9 | 61 | 2029-12-22 | — | Active (Vanity) |
| K4BOX | 9 | 63 | 2029-06-07 | — | Active (Vanity) |
| K4BOY | 9 | 65 | 2031-05-04 | — | Active (Vanity) |
| K4BOZ | 9 | 63 | 2032-12-22 | — | Active (Vanity) |
| K4BPA | 9 | 57 | — | — | Available |
| K4BPB | 9 | 61 | — | — | Available |
| K4BPC | 9 | 63 | 2036-01-06 | — | Active (Vanity) |
| K4BPD | 9 | 59 | 2031-04-02 | — | Active (Vanity) |
| K4BPE | 9 | 53 | 2034-09-28 | — | Active (Vanity) |
| K4BPF | 9 | 61 | 2024-07-14 | 2026-07-15 | Available |
| K4BPG | 8 | 61 | — | — | Available |
| K4BPH | 9 | 59 | 2006-11-05 | 2008-11-06 | Available |
| K4BPI | 10 | 55 | 2031-06-22 | — | Active (Vanity) |
| K4BPJ | 10 | 65 | 2001-10-15 | 2003-10-16 | Available |
| K4BPK | 9 | 61 | 2019-05-30 | 2021-05-31 | Available |
| K4BPL | 9 | 61 | — | — | Available |
| K4BPM | 8 | 59 | 2036-09-26 | — | Active (Vanity) |
| K4BPN | 10 | 57 | — | — | Available |
| K4BPO | 9 | 63 | — | — | Available |
| K4BPP | 9 | 63 | — | — | Available |
| K4BPQ | 9 | 65 | 2017-04-23 | 2019-04-24 | Available |
| K4BPR | 10 | 59 | 2035-02-18 | — | Active (Vanity) |
| K4BPS | 10 | 57 | — | — | Available |
| K4BPT | 9 | 55 | 2032-04-15 | — | Active (Vanity) |
| K4BPU | 10 | 59 | — | — | Available |
| K4BPV | 9 | 61 | — | — | Available |
| K4BPW | 9 | 61 | 2032-01-23 | — | Active (Vanity) |
| K4BPX | 9 | 63 | — | — | Available |
| K4BPY | 9 | 65 | — | — | Available |
| K4BPZ | 9 | 63 | — | — | Available |
| K4BQA | 9 | 59 | 2034-11-08 | — | Active (Vanity) |
| K4BQB | 9 | 63 | — | — | Available |
| K4BQC | 9 | 65 | 2004-05-24 | 2006-05-25 | Available |
| K4BQD | 9 | 61 | 2014-09-27 | 2016-09-28 | Available |
| K4BQE | 9 | 55 | 2023-02-11 | 2025-02-12 | Available |
| K4BQF | 9 | 63 | 2034-05-24 | — | Active (Vanity) |
| K4BQG | 8 | 63 | 2028-10-23 | — | Active |
| K4BQH | 9 | 61 | 2034-11-08 | — | Active (Vanity) |