District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| NB4XS | 11 | 53 | — | — | Available |
| NB4XT | 10 | 51 | — | — | Available |
| NB4XU | 11 | 55 | — | — | Available |
| NB4XV | 10 | 57 | — | — | Available |
| NB4XW | 10 | 57 | — | — | Available |
| NB4XX | 10 | 59 | — | — | Available |
| NB4XY | 10 | 61 | — | — | Available |
| NB4XZ | 10 | 59 | — | — | Available |
| NB4YA | 10 | 55 | — | — | Available |
| NB4YB | 10 | 59 | — | — | Available |
| NB4YC | 10 | 61 | — | — | Available |
| NB4YD | 10 | 57 | — | — | Available |
| NB4YE | 10 | 51 | — | — | Available |
| NB4YF | 10 | 59 | — | — | Available |
| NB4YG | 9 | 59 | — | — | Available |
| NB4YH | 10 | 57 | — | — | Available |
| NB4YI | 11 | 53 | — | — | Available |
| NB4YJ | 11 | 63 | — | — | Available |
| NB4YK | 10 | 59 | — | — | Available |
| NB4YL | 10 | 59 | — | — | Available |
| NB4YM | 9 | 57 | — | — | Available |
| NB4YN | 11 | 55 | — | — | Available |
| NB4YO | 10 | 61 | — | — | Available |
| NB4YP | 10 | 61 | — | — | Available |
| NB4YQ | 10 | 63 | — | — | Available |
| NB4YR | 11 | 57 | — | — | Available |
| NB4YS | 11 | 55 | — | — | Available |
| NB4YT | 10 | 53 | — | — | Available |
| NB4YU | 11 | 57 | — | — | Available |
| NB4YV | 10 | 59 | — | — | Available |
| NB4YW | 10 | 59 | — | — | Available |
| NB4YX | 10 | 61 | — | — | Available |
| NB4YY | 10 | 63 | — | — | Available |
| NB4YZ | 10 | 61 | — | — | Available |
| NB4ZA | 10 | 53 | — | — | Available |
| NB4ZB | 10 | 57 | — | — | Available |
| NB4ZC | 10 | 59 | — | — | Available |
| NB4ZD | 10 | 55 | — | — | Available |
| NB4ZE | 10 | 49 | — | — | Available |
| NB4ZF | 10 | 57 | — | — | Available |
| NB4ZG | 9 | 57 | — | — | Available |
| NB4ZH | 10 | 55 | — | — | Available |
| NB4ZI | 11 | 51 | — | — | Available |
| NB4ZJ | 11 | 61 | — | — | Available |
| NB4ZK | 10 | 57 | — | — | Available |
| NB4ZL | 10 | 57 | — | — | Available |
| NB4ZM | 9 | 55 | — | — | Available |
| NB4ZN | 11 | 53 | — | — | Available |
| NB4ZO | 10 | 59 | — | — | Available |
| NB4ZP | 10 | 59 | — | — | Available |
| NB4ZQ | 10 | 61 | — | — | Available |
| NB4ZR | 11 | 55 | — | — | Available |
| NB4ZS | 11 | 53 | — | — | Available |
| NB4ZT | 10 | 51 | — | — | Available |
| NB4ZU | 11 | 55 | — | — | Available |
| NB4ZV | 10 | 57 | — | — | Available |
| NB4ZW | 10 | 57 | — | — | Available |
| NB4ZX | 10 | 59 | — | — | Available |
| NB4ZY | 10 | 61 | — | — | Available |
| NB4ZZ | 10 | 59 | — | — | Available |
| NC4AA | 10 | 49 | 2027-10-16 | — | Active (Vanity) |
| NC4AB | 10 | 53 | 2030-11-19 | — | Active (Vanity) |
| NC4AC | 10 | 55 | 2028-09-16 | — | Active (Vanity) |
| NC4AD | 10 | 51 | 2025-06-01 | — | Active (Vanity) |
| NC4AE | 10 | 45 | 2027-07-31 | — | Active (Vanity) |
| NC4AF | 10 | 53 | 2031-09-28 | — | Active (Vanity) |
| NC4AG | 9 | 53 | 2033-09-28 | — | Active (Vanity) |
| NC4AH | 10 | 51 | 2034-10-04 | — | Active (Vanity) |
| NC4AI | 11 | 47 | — | — | Available |
| NC4AJ | 11 | 57 | — | — | Available |
| NC4AK | 10 | 53 | 2036-03-27 | — | Active (Vanity) |
| NC4AL | 10 | 53 | 2032-02-08 | — | Active (Vanity) |
| NC4AM | 9 | 51 | 2030-09-30 | — | Active (Vanity) |
| NC4AN | 11 | 49 | — | — | Available |
| NC4AO | 10 | 55 | — | — | Available |
| NC4AP | 10 | 55 | — | — | Available |
| NC4AQ | 10 | 57 | — | — | Available |
| NC4AR | 11 | 51 | 2028-11-18 | — | Active (Vanity) |
| NC4AS | 11 | 49 | 2025-10-16 | — | Active (Vanity) |
| NC4AT | 10 | 47 | 2036-03-24 | — | Active (Vanity) |
| NC4AU | 11 | 51 | 2030-09-11 | — | Active (Vanity) |
| NC4AV | 10 | 53 | — | — | Available |
| NC4AW | 10 | 53 | 2020-06-27 | 2022-06-28 | Available |
| NC4AX | 10 | 55 | 2031-07-23 | — | Active (Vanity) |
| NC4AY | 10 | 57 | — | — | Available |
| NC4AZ | 10 | 55 | 2035-12-15 | — | Active (Vanity) |
| NC4BA | 10 | 53 | — | — | Available |
| NC4BB | 10 | 57 | 2025-05-12 | — | Active (Vanity) |
| NC4BC | 10 | 59 | 2034-09-07 | — | Active (Vanity) |
| NC4BD | 10 | 55 | 2032-02-18 | — | Active (Vanity) |
| NC4BE | 10 | 49 | 2024-03-06 | 2026-03-07 | Available |
| NC4BF | 10 | 57 | — | — | Available |
| NC4BG | 9 | 57 | — | — | Available |
| NC4BH | 10 | 55 | 2032-09-04 | — | Active (Vanity) |
| NC4BI | 11 | 51 | — | — | Available |
| NC4BJ | 11 | 61 | 2030-06-17 | — | Active (Vanity) |
| NC4BK | 10 | 57 | — | — | Available |
| NC4BL | 10 | 57 | 2029-06-30 | — | Active (Vanity) |
| NC4BM | 9 | 55 | — | — | Available |
| NC4BN | 11 | 53 | — | — | Available |