District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| WU4JS | 12 | 57 | — | — | Available |
| WU4JT | 11 | 55 | — | — | Available |
| WU4JU | 12 | 59 | — | — | Available |
| WU4JV | 11 | 61 | — | — | Available |
| WU4JW | 11 | 61 | — | — | Available |
| WU4JX | 11 | 63 | — | — | Available |
| WU4JY | 11 | 65 | — | — | Available |
| WU4JZ | 11 | 63 | — | — | Available |
| WU4KA | 10 | 53 | — | — | Available |
| WU4KB | 10 | 57 | — | — | Available |
| WU4KC | 10 | 59 | — | — | Available |
| WU4KD | 10 | 55 | — | — | Available |
| WU4KE | 10 | 49 | — | — | Available |
| WU4KF | 10 | 57 | — | — | Available |
| WU4KG | 9 | 57 | — | — | Available |
| WU4KH | 10 | 55 | — | — | Available |
| WU4KI | 11 | 51 | — | — | Available |
| WU4KJ | 11 | 61 | — | — | Available |
| WU4KK | 10 | 57 | — | — | Available |
| WU4KL | 10 | 57 | — | — | Available |
| WU4KM | 9 | 55 | — | — | Available |
| WU4KN | 11 | 53 | — | — | Available |
| WU4KO | 10 | 59 | — | — | Available |
| WU4KP | 10 | 59 | — | — | Available |
| WU4KQ | 10 | 61 | — | — | Available |
| WU4KR | 11 | 55 | — | — | Available |
| WU4KS | 11 | 53 | — | — | Available |
| WU4KT | 10 | 51 | — | — | Available |
| WU4KU | 11 | 55 | — | — | Available |
| WU4KV | 10 | 57 | — | — | Available |
| WU4KW | 10 | 57 | — | — | Available |
| WU4KX | 10 | 59 | — | — | Available |
| WU4KY | 10 | 61 | — | — | Available |
| WU4KZ | 10 | 59 | — | — | Available |
| WU4LA | 10 | 53 | — | — | Available |
| WU4LB | 10 | 57 | — | — | Available |
| WU4LC | 10 | 59 | — | — | Available |
| WU4LD | 10 | 55 | — | — | Available |
| WU4LE | 10 | 49 | — | — | Available |
| WU4LF | 10 | 57 | — | — | Available |
| WU4LG | 9 | 57 | — | — | Available |
| WU4LH | 10 | 55 | — | — | Available |
| WU4LI | 11 | 51 | — | — | Available |
| WU4LJ | 11 | 61 | — | — | Available |
| WU4LK | 10 | 57 | — | — | Available |
| WU4LL | 10 | 57 | — | — | Available |
| WU4LM | 9 | 55 | — | — | Available |
| WU4LN | 11 | 53 | — | — | Available |
| WU4LO | 10 | 59 | — | — | Available |
| WU4LP | 10 | 59 | — | — | Available |
| WU4LQ | 10 | 61 | — | — | Available |
| WU4LR | 11 | 55 | — | — | Available |
| WU4LS | 11 | 53 | — | — | Available |
| WU4LT | 10 | 51 | — | — | Available |
| WU4LU | 11 | 55 | — | — | Available |
| WU4LV | 10 | 57 | — | — | Available |
| WU4LW | 10 | 57 | — | — | Available |
| WU4LX | 10 | 59 | — | — | Available |
| WU4LY | 10 | 61 | — | — | Available |
| WU4LZ | 10 | 59 | — | — | Available |
| WU4MA | 9 | 51 | — | — | Available |
| WU4MB | 9 | 55 | — | — | Available |
| WU4MC | 9 | 57 | — | — | Available |
| WU4MD | 9 | 53 | — | — | Available |
| WU4ME | 9 | 47 | — | — | Available |
| WU4MF | 9 | 55 | — | — | Available |
| WU4MG | 8 | 55 | — | — | Available |
| WU4MH | 9 | 53 | — | — | Available |
| WU4MI | 10 | 49 | — | — | Available |
| WU4MJ | 10 | 59 | — | — | Available |
| WU4MK | 9 | 55 | — | — | Available |
| WU4ML | 9 | 55 | — | — | Available |
| WU4MM | 8 | 53 | — | — | Available |
| WU4MN | 10 | 51 | — | — | Available |
| WU4MO | 9 | 57 | — | — | Available |
| WU4MP | 9 | 57 | — | — | Available |
| WU4MQ | 9 | 59 | — | — | Available |
| WU4MR | 10 | 53 | — | — | Available |
| WU4MS | 10 | 51 | — | — | Available |
| WU4MT | 9 | 49 | — | — | Available |
| WU4MU | 10 | 53 | — | — | Available |
| WU4MV | 9 | 55 | — | — | Available |
| WU4MW | 9 | 55 | — | — | Available |
| WU4MX | 9 | 57 | — | — | Available |
| WU4MY | 9 | 59 | — | — | Available |
| WU4MZ | 9 | 57 | — | — | Available |
| WU4NA | 11 | 49 | — | — | Available |
| WU4NB | 11 | 53 | — | — | Available |
| WU4NC | 11 | 55 | 2026-04-09 | — | Active (Vanity) |
| WU4ND | 11 | 51 | — | — | Available |
| WU4NE | 11 | 45 | — | — | Available |
| WU4NF | 11 | 53 | — | — | Available |
| WU4NG | 10 | 53 | — | — | Available |
| WU4NH | 11 | 51 | — | — | Available |
| WU4NI | 12 | 47 | — | — | Available |
| WU4NJ | 12 | 57 | — | — | Available |
| WU4NK | 11 | 53 | — | — | Available |
| WU4NL | 11 | 53 | — | — | Available |
| WU4NM | 10 | 51 | — | — | Available |
| WU4NN | 12 | 49 | — | — | Available |