District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4SOB | 11 | 53 | 2026-08-15 | — | Active (Vanity) |
| N4SOC | 11 | 55 | 2033-09-04 | — | Active |
| N4SOD | 11 | 51 | 2035-01-31 | — | Active (Vanity) |
| N4SOE | 11 | 45 | 2036-11-15 | — | Active |
| N4SOF | 11 | 53 | 2018-05-19 | 2020-05-20 | Available |
| N4SOG | 10 | 53 | 2028-06-08 | — | Active |
| N4SOH | 11 | 51 | 2019-01-01 | 2021-01-02 | Available |
| N4SOI | 12 | 47 | 2027-09-06 | — | Active (Vanity) |
| N4SOJ | 12 | 57 | 2017-12-26 | 2019-12-27 | Available |
| N4SOK | 11 | 53 | 2028-01-23 | — | Active |
| N4SOL | 11 | 53 | 2030-07-24 | — | Active (Vanity) |
| N4SOM | 10 | 51 | 1998-04-12 | 2000-04-13 | Available |
| N4SON | 12 | 49 | 2007-12-18 | 2009-12-19 | Available |
| N4SOO | 11 | 55 | 2030-02-19 | — | Active (Vanity) |
| N4SOP | 11 | 55 | 2019-01-03 | 2021-01-04 | Available |
| N4SOQ | 11 | 57 | 2007-12-23 | 2009-12-24 | Available |
| N4SOR | 12 | 51 | 2031-03-19 | — | Active (Vanity) |
| N4SOT | 11 | 47 | 2028-02-06 | — | Active |
| N4SOU | 12 | 51 | 2033-01-10 | — | Active (Vanity) |
| N4SOV | 11 | 53 | 2032-01-07 | — | Active |
| N4SOW | 11 | 53 | — | — | Available |
| N4SOX | 11 | 55 | 2021-04-27 | 2023-04-28 | Available |
| N4SOY | 11 | 57 | 1998-04-19 | 2000-04-20 | Available |
| N4SOZ | 11 | 55 | 1998-04-19 | 2000-04-20 | Available |
| N4SPA | 11 | 49 | 2029-10-04 | — | Active (Vanity) |
| N4SPB | 11 | 53 | 1998-04-19 | 2000-04-20 | Available |
| N4SPC | 11 | 55 | 2025-06-16 | — | Active (Vanity) |
| N4SPD | 11 | 51 | 2031-03-13 | — | Active (Vanity) |
| N4SPE | 11 | 45 | 2007-12-18 | 2009-12-19 | Available |
| N4SPF | 11 | 53 | 1998-04-19 | 2000-04-20 | Available |
| N4SPG | 10 | 53 | 2028-12-27 | — | Active (Vanity) |
| N4SPH | 11 | 51 | 1998-04-19 | 2000-04-20 | Available |
| N4SPI | 12 | 47 | — | — | Available |
| N4SPJ | 12 | 57 | 2029-03-11 | — | Active (Vanity) |
| N4SPK | 11 | 53 | 2028-08-16 | — | Active (Vanity) |
| N4SPL | 11 | 53 | 2036-03-21 | — | Active (Vanity) |
| N4SPM | 10 | 51 | 2035-06-21 | — | Active (Vanity) |
| N4SPN | 12 | 49 | 2022-07-07 | 2024-07-08 | Available |
| N4SPO | 11 | 55 | 1998-04-19 | 2000-04-20 | Available |
| N4SPP | 11 | 55 | 2035-08-02 | — | Active |
| N4SPQ | 11 | 57 | 2004-01-03 | 2006-01-04 | Available |
| N4SPR | 12 | 51 | 2034-09-24 | — | Active (Vanity) |
| N4SPS | 12 | 49 | 2036-04-18 | — | Active (Vanity) |
| N4SPT | 11 | 47 | 2035-12-13 | — | Active (Vanity) |
| N4SPU | 12 | 51 | 1997-08-05 | 1999-08-06 | Available |
| N4SPV | 11 | 53 | 2028-01-26 | — | Active |
| N4SPW | 11 | 53 | 2027-12-24 | — | Active |
| N4SPX | 11 | 55 | 2032-12-22 | — | Active |
| N4SPY | 11 | 57 | 2029-09-24 | — | Active |
| N4SPZ | 11 | 55 | 2028-01-23 | — | Active |
| N4SQA | 11 | 51 | 2028-04-20 | — | Active |
| N4SQB | 11 | 55 | 2031-09-17 | — | Active |
| N4SQC | 11 | 57 | 2023-03-02 | 2025-03-03 | Available |
| N4SQD | 11 | 53 | 2018-07-20 | 2020-07-21 | Available |
| N4SQE | 11 | 47 | 2017-12-03 | 2019-12-04 | Available |
| N4SQF | 11 | 55 | — | — | Available |
| N4SQG | 10 | 55 | — | — | Available |
| N4SQH | 11 | 53 | 2028-01-08 | — | Active |
| N4SQI | 12 | 49 | 2012-03-10 | 2014-03-11 | Available |
| N4SQJ | 12 | 59 | 1998-04-26 | 2000-04-27 | Available |
| N4SQK | 11 | 55 | 2029-07-01 | — | Active |
| N4SQL | 11 | 55 | 2016-01-19 | 2018-01-20 | Available |
| N4SQM | 10 | 53 | 2008-01-09 | 2010-01-10 | Available |
| N4SQN | 12 | 51 | — | — | Available |
| N4SQO | 11 | 57 | 2008-02-25 | 2010-02-26 | Available |
| N4SQP | 11 | 57 | — | — | Available |
| N4SQQ | 11 | 59 | 1998-04-26 | 2000-04-27 | Available |
| N4SQR | 12 | 53 | 2010-05-22 | 2012-05-23 | Available |
| N4SQS | 12 | 51 | 2028-04-20 | — | Active |
| N4SQT | 11 | 49 | — | — | Available |
| N4SQU | 12 | 53 | 1998-04-26 | 2000-04-27 | Available |
| N4SQV | 11 | 55 | 2031-05-21 | — | Active |
| N4SQW | 11 | 55 | 2002-03-07 | 2004-03-08 | Available |
| N4SQX | 11 | 57 | 1998-04-26 | 2000-04-27 | Available |
| N4SQY | 11 | 59 | 2028-01-13 | — | Active |
| N4SQZ | 11 | 57 | 2031-03-08 | — | Active |
| N4SRA | 12 | 45 | 2034-02-13 | — | Active |
| N4SRB | 12 | 49 | 2029-10-12 | — | Active (Vanity) |
| N4SRC | 12 | 51 | 2030-11-20 | — | Active (Vanity) |
| N4SRD | 12 | 47 | 2034-07-23 | — | Active (Vanity) |
| N4SRE | 12 | 41 | 2028-01-22 | — | Active |
| N4SRF | 12 | 49 | 2031-06-02 | — | Active (Vanity) |
| N4SRG | 11 | 49 | 2033-08-17 | — | Active |
| N4SRH | 12 | 47 | 2030-11-10 | — | Active (Vanity) |
| N4SRI | 13 | 43 | 2014-07-16 | 2016-07-17 | Available |
| N4SRJ | 13 | 53 | 2021-03-19 | 2023-03-20 | Available |
| N4SRK | 12 | 49 | 2030-04-22 | — | Active |
| N4SRL | 12 | 49 | — | — | Available |
| N4SRM | 11 | 47 | 2008-11-13 | 2010-11-14 | Available |
| N4SRN | 13 | 45 | 2026-08-12 | — | Active (Vanity) |
| N4SRO | 12 | 51 | 2027-12-26 | — | Active |
| N4SRP | 12 | 51 | 2035-07-24 | — | Active (Vanity) |
| N4SRQ | 12 | 53 | 2030-05-25 | — | Active (Vanity) |
| N4SRR | 13 | 47 | 2029-12-17 | — | Active |
| N4SRS | 13 | 45 | 2033-07-15 | — | Active (Vanity) |
| N4SRT | 12 | 43 | 2004-03-26 | 2006-03-27 | Available |
| N4SRU | 13 | 47 | 1998-04-26 | 2000-04-27 | Available |
| N4SRV | 12 | 49 | 2033-08-30 | — | Active (Vanity) |
| N4SRW | 12 | 49 | 2032-08-30 | — | Active (Vanity) |
| N4SRX | 12 | 51 | 1998-04-26 | 2000-04-27 | Available |