District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KA4YQ | 9 | 63 | — | — | Reserved |
| KA4YR | 10 | 57 | — | — | Reserved |
| KA4YS | 10 | 55 | — | — | Reserved |
| KA4YT | 9 | 53 | — | — | Reserved |
| KA4YU | 10 | 57 | — | — | Reserved |
| KA4YV | 9 | 59 | — | — | Reserved |
| KA4YW | 9 | 59 | — | — | Reserved |
| KA4YX | 9 | 61 | — | — | Reserved |
| KA4YY | 9 | 63 | — | — | Reserved |
| KA4YZ | 9 | 61 | — | — | Reserved |
| KA4ZA | 9 | 53 | — | — | Reserved |
| KA4ZB | 9 | 57 | — | — | Reserved |
| KA4ZC | 9 | 59 | — | — | Reserved |
| KA4ZD | 9 | 55 | — | — | Reserved |
| KA4ZE | 9 | 49 | — | — | Reserved |
| KA4ZF | 9 | 57 | — | — | Reserved |
| KA4ZG | 8 | 57 | — | — | Reserved |
| KA4ZH | 9 | 55 | — | — | Reserved |
| KA4ZI | 10 | 51 | — | — | Reserved |
| KA4ZJ | 10 | 61 | — | — | Reserved |
| KA4ZK | 9 | 57 | — | — | Reserved |
| KA4ZL | 9 | 57 | — | — | Reserved |
| KA4ZM | 8 | 55 | — | — | Reserved |
| KA4ZN | 10 | 53 | — | — | Reserved |
| KA4ZO | 9 | 59 | — | — | Reserved |
| KA4ZP | 9 | 59 | — | — | Reserved |
| KA4ZQ | 9 | 61 | — | — | Reserved |
| KA4ZR | 10 | 55 | — | — | Reserved |
| KA4ZS | 10 | 53 | — | — | Reserved |
| KA4ZT | 9 | 51 | — | — | Reserved |
| KA4ZU | 10 | 55 | — | — | Reserved |
| KA4ZV | 9 | 57 | — | — | Reserved |
| KA4ZW | 9 | 57 | — | — | Reserved |
| KA4ZX | 9 | 59 | — | — | Reserved |
| KA4ZY | 9 | 61 | — | — | Reserved |
| KA4ZZ | 9 | 59 | — | — | Reserved |
| KB4AA | 9 | 51 | 2024-03-05 | 2026-03-06 | Available |
| KB4AB | 9 | 55 | 2023-06-22 | 2025-06-23 | Available |
| KB4AC | 9 | 57 | 2027-05-02 | — | Active (Vanity) |
| KB4AD | 9 | 53 | 2019-10-29 | 2021-10-30 | Available |
| KB4AE | 9 | 47 | 2033-09-07 | — | Active |
| KB4AF | 9 | 55 | 2032-02-18 | — | Active (Vanity) |
| KB4AG | 8 | 55 | 2035-06-21 | — | Active (Vanity) |
| KB4AH | 9 | 53 | — | — | Available |
| KB4AI | 10 | 49 | 2027-01-31 | — | Active |
| KB4AJ | 10 | 59 | — | — | Available |
| KB4AK | 9 | 55 | 2017-11-13 | 2019-11-14 | Available |
| KB4AL | 9 | 55 | 2030-08-13 | — | Active (Vanity) |
| KB4AM | 8 | 53 | 2030-06-19 | — | Active |
| KB4AN | 10 | 51 | 2006-11-05 | 2008-11-06 | Available |
| KB4AO | 9 | 57 | 2018-04-07 | 2020-04-08 | Available |
| KB4AP | 9 | 57 | — | — | Available |
| KB4AQ | 9 | 59 | 2006-05-14 | 2008-05-15 | Available |
| KB4AR | 10 | 53 | 2033-06-02 | — | Active (Vanity) |
| KB4AS | 10 | 51 | 2030-04-10 | — | Active (Vanity) |
| KB4AT | 9 | 49 | 2008-10-23 | 2010-10-24 | Available |
| KB4AU | 10 | 53 | 2014-08-31 | 2016-09-01 | Available |
| KB4AV | 9 | 55 | 2028-01-23 | — | Active |
| KB4AW | 9 | 55 | 2034-06-08 | — | Active (Vanity) |
| KB4AX | 9 | 57 | 2033-07-06 | — | Active (Vanity) |
| KB4AY | 9 | 59 | 2035-05-10 | — | Active (Vanity) |
| KB4AZ | 9 | 57 | 2031-08-28 | — | Active (Vanity) |
| KB4BA | 9 | 55 | 2024-06-17 | 2026-06-18 | Available |
| KB4BB | 9 | 59 | 2033-09-06 | — | Active (Vanity) |
| KB4BC | 9 | 61 | 2026-07-15 | — | Active (Vanity) |
| KB4BD | 9 | 57 | — | — | Available |
| KB4BE | 9 | 51 | 2018-06-01 | 2020-06-02 | Available |
| KB4BF | 9 | 59 | 2027-11-14 | — | Active |
| KB4BG | 8 | 59 | 2030-01-30 | — | Active |
| KB4BH | 9 | 57 | 2036-05-22 | — | Active (Vanity) |
| KB4BI | 10 | 53 | 2032-07-07 | — | Active |
| KB4BJ | 10 | 63 | — | — | Available |
| KB4BK | 9 | 59 | 2035-01-13 | — | Active |
| KB4BL | 9 | 59 | — | — | Available |
| KB4BM | 8 | 57 | — | — | Available |
| KB4BN | 10 | 55 | 2016-02-22 | 2018-02-23 | Available |
| KB4BO | 9 | 61 | 2000-10-16 | 2002-10-17 | Available |
| KB4BP | 9 | 61 | — | — | Available |
| KB4BQ | 9 | 63 | — | — | Available |
| KB4BR | 10 | 57 | 2028-01-09 | — | Active |
| KB4BS | 10 | 55 | 2024-12-13 | — | Active |
| KB4BT | 9 | 53 | 2026-05-13 | — | Active |
| KB4BU | 10 | 57 | — | — | Available |
| KB4BV | 9 | 59 | — | — | Available |
| KB4BW | 9 | 59 | 2028-02-27 | — | Active |
| KB4BX | 9 | 61 | 2028-01-06 | — | Active |
| KB4BY | 9 | 63 | — | — | Available |
| KB4BZ | 9 | 61 | 2030-10-03 | — | Active (Vanity) |
| KB4CA | 9 | 57 | — | — | Available |
| KB4CB | 9 | 61 | 2031-06-29 | — | Active (Vanity) |
| KB4CC | 9 | 63 | 2033-04-11 | — | Active (Vanity) |
| KB4CD | 9 | 59 | 2018-04-09 | 2020-04-10 | Available |
| KB4CE | 9 | 53 | — | — | Available |
| KB4CF | 9 | 61 | 2028-01-27 | — | Active |
| KB4CG | 8 | 61 | 2033-05-04 | — | Active |
| KB4CH | 9 | 59 | 2028-07-22 | — | Active |
| KB4CI | 10 | 55 | 2028-03-21 | — | Active (Vanity) |
| KB4CJ | 10 | 65 | 2020-01-19 | 2022-01-20 | Available |
| KB4CK | 9 | 61 | 2025-09-06 | 2027-09-07 | Canceled (grace period) |
| KB4CL | 9 | 61 | 2027-01-30 | — | Active |