District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| NN4RO | 12 | 51 | — | — | Available |
| NN4RP | 12 | 51 | — | — | Available |
| NN4RQ | 12 | 53 | — | — | Available |
| NN4RR | 13 | 47 | 2019-08-09 | 2021-08-10 | Available |
| NN4RS | 13 | 45 | — | — | Available |
| NN4RT | 12 | 43 | 2033-10-20 | — | Active (Vanity) |
| NN4RU | 13 | 47 | — | — | Available |
| NN4RV | 12 | 49 | — | — | Available |
| NN4RW | 12 | 49 | — | — | Available |
| NN4RX | 12 | 51 | — | — | Available |
| NN4RY | 12 | 53 | — | — | Available |
| NN4RZ | 12 | 51 | — | — | Available |
| NN4SA | 12 | 43 | 2035-02-10 | — | Active (Vanity) |
| NN4SB | 12 | 47 | — | — | Available |
| NN4SC | 12 | 49 | — | — | Available |
| NN4SD | 12 | 45 | — | — | Available |
| NN4SE | 12 | 39 | — | — | Available |
| NN4SF | 12 | 47 | — | — | Available |
| NN4SG | 11 | 47 | — | — | Available |
| NN4SH | 12 | 45 | — | — | Available |
| NN4SI | 13 | 41 | — | — | Available |
| NN4SJ | 13 | 51 | — | — | Available |
| NN4SK | 12 | 47 | — | — | Available |
| NN4SL | 12 | 47 | — | — | Available |
| NN4SM | 11 | 45 | — | — | Available |
| NN4SN | 13 | 43 | — | — | Available |
| NN4SO | 12 | 49 | — | — | Available |
| NN4SP | 12 | 49 | — | — | Available |
| NN4SQ | 12 | 51 | — | — | Available |
| NN4SR | 13 | 45 | — | — | Available |
| NN4SS | 13 | 43 | 2032-07-20 | — | Active (Vanity) |
| NN4ST | 12 | 41 | — | — | Available |
| NN4SU | 13 | 45 | — | — | Available |
| NN4SV | 12 | 47 | — | — | Available |
| NN4SW | 12 | 47 | — | — | Available |
| NN4SX | 12 | 49 | — | — | Available |
| NN4SY | 12 | 51 | — | — | Available |
| NN4SZ | 12 | 49 | — | — | Available |
| NN4TA | 11 | 41 | — | — | Available |
| NN4TB | 11 | 45 | — | — | Available |
| NN4TC | 11 | 47 | — | — | Available |
| NN4TD | 11 | 43 | — | — | Available |
| NN4TE | 11 | 37 | — | — | Available |
| NN4TF | 11 | 45 | — | — | Available |
| NN4TG | 10 | 45 | — | — | Available |
| NN4TH | 11 | 43 | — | — | Available |
| NN4TI | 12 | 39 | — | — | Available |
| NN4TJ | 12 | 49 | — | — | Available |
| NN4TK | 11 | 45 | — | — | Available |
| NN4TL | 11 | 45 | — | — | Available |
| NN4TM | 10 | 43 | — | — | Available |
| NN4TN | 12 | 41 | — | — | Available |
| NN4TO | 11 | 47 | 2019-10-08 | 2021-10-09 | Available |
| NN4TP | 11 | 47 | — | — | Available |
| NN4TQ | 11 | 49 | — | — | Available |
| NN4TR | 12 | 43 | — | — | Available |
| NN4TS | 12 | 41 | — | — | Available |
| NN4TT | 11 | 39 | 2028-11-24 | — | Active (Vanity) |
| NN4TU | 12 | 43 | — | — | Available |
| NN4TV | 11 | 45 | — | — | Available |
| NN4TW | 11 | 45 | — | — | Available |
| NN4TX | 11 | 47 | — | — | Available |
| NN4TY | 11 | 49 | — | — | Available |
| NN4TZ | 11 | 47 | — | — | Available |
| NN4UA | 12 | 45 | 2025-10-14 | — | Active (Vanity) |
| NN4UB | 12 | 49 | — | — | Available |
| NN4UC | 12 | 51 | — | — | Available |
| NN4UD | 12 | 47 | — | — | Available |
| NN4UE | 12 | 41 | — | — | Available |
| NN4UF | 12 | 49 | — | — | Available |
| NN4UG | 11 | 49 | — | — | Available |
| NN4UH | 12 | 47 | — | — | Available |
| NN4UI | 13 | 43 | — | — | Available |
| NN4UJ | 13 | 53 | — | — | Available |
| NN4UK | 12 | 49 | — | — | Available |
| NN4UL | 12 | 49 | — | — | Available |
| NN4UM | 11 | 47 | — | — | Available |
| NN4UN | 13 | 45 | — | — | Available |
| NN4UO | 12 | 51 | — | — | Available |
| NN4UP | 12 | 51 | — | — | Available |
| NN4UQ | 12 | 53 | — | — | Available |
| NN4UR | 13 | 47 | — | — | Available |
| NN4US | 13 | 45 | 2029-09-15 | — | Active (Vanity) |
| NN4UT | 12 | 43 | — | — | Available |
| NN4UU | 13 | 47 | — | — | Available |
| NN4UV | 12 | 49 | — | — | Available |
| NN4UW | 12 | 49 | — | — | Available |
| NN4UX | 12 | 51 | — | — | Available |
| NN4UY | 12 | 53 | — | — | Available |
| NN4UZ | 12 | 51 | — | — | Available |
| NN4VA | 11 | 47 | 2033-06-04 | — | Active (Vanity) |
| NN4VB | 11 | 51 | — | — | Available |
| NN4VC | 11 | 53 | — | — | Available |
| NN4VD | 11 | 49 | — | — | Available |
| NN4VE | 11 | 43 | — | — | Available |
| NN4VF | 11 | 51 | — | — | Available |
| NN4VG | 10 | 51 | — | — | Available |
| NN4VH | 11 | 49 | — | — | Available |
| NN4VI | 12 | 45 | — | — | Available |
| NN4VJ | 12 | 55 | — | — | Available |