District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4SCN | 12 | 49 | 2014-05-31 | 2016-06-01 | Available |
| N4SCO | 11 | 55 | 2018-06-08 | 2020-06-09 | Available |
| N4SCP | 11 | 55 | 2028-11-10 | — | Active |
| N4SCQ | 11 | 57 | — | — | Available |
| N4SCR | 12 | 51 | 2027-10-24 | — | Active |
| N4SCS | 12 | 49 | 2029-03-23 | — | Active |
| N4SCT | 11 | 47 | 2030-04-07 | — | Active |
| N4SCU | 12 | 51 | 2030-08-25 | — | Active |
| N4SCV | 11 | 53 | 2029-08-13 | — | Active (Vanity) |
| N4SCW | 11 | 53 | 2033-06-09 | — | Active (Vanity) |
| N4SCX | 11 | 55 | 2028-01-23 | — | Active |
| N4SCY | 11 | 57 | 2023-01-05 | 2025-01-06 | Available |
| N4SCZ | 11 | 55 | 2027-11-14 | — | Active |
| N4SDA | 11 | 45 | 2026-02-23 | — | Active (Vanity) |
| N4SDB | 11 | 49 | 2031-12-03 | — | Active (Vanity) |
| N4SDC | 11 | 51 | 2028-06-18 | — | Active |
| N4SDD | 11 | 47 | 2032-03-05 | — | Active (Vanity) |
| N4SDE | 11 | 41 | 2021-03-17 | 2023-03-18 | Available |
| N4SDF | 11 | 49 | 2027-02-23 | — | Active (Vanity) |
| N4SDG | 10 | 49 | 2036-02-17 | — | Active (Vanity) |
| N4SDH | 11 | 47 | 2031-12-31 | — | Active (Vanity) |
| N4SDI | 12 | 43 | 2018-06-01 | 2020-06-02 | Available |
| N4SDJ | 12 | 53 | 2033-04-20 | — | Active |
| N4SDK | 11 | 49 | 2031-04-16 | — | Active (Vanity) |
| N4SDL | 11 | 49 | 2034-03-26 | — | Active (Vanity) |
| N4SDM | 10 | 47 | 2034-03-02 | — | Active (Vanity) |
| N4SDN | 12 | 45 | 2030-11-06 | — | Active (Vanity) |
| N4SDO | 11 | 51 | 2031-04-26 | — | Active (Vanity) |
| N4SDP | 11 | 51 | 2010-03-26 | 2012-03-27 | Available |
| N4SDQ | 11 | 53 | 2004-03-15 | 2006-03-16 | Available |
| N4SDR | 12 | 47 | 2028-05-22 | — | Active |
| N4SDS | 12 | 45 | 2026-05-19 | — | Active (Vanity) |
| N4SDT | 11 | 43 | 2034-09-07 | — | Active (Vanity) |
| N4SDU | 12 | 47 | 2019-06-30 | 2021-07-01 | Available |
| N4SDV | 11 | 49 | 2019-04-20 | 2021-04-21 | Available |
| N4SDW | 11 | 49 | 2035-03-04 | — | Active (Vanity) |
| N4SDX | 11 | 51 | 2017-10-24 | 2019-10-25 | Available |
| N4SDY | 11 | 53 | 1998-02-23 | 2000-02-24 | Available |
| N4SDZ | 11 | 51 | 2028-01-12 | — | Active |
| N4SEA | 11 | 39 | 2033-08-23 | — | Active (Vanity) |
| N4SEB | 11 | 43 | 2033-05-19 | — | Active (Vanity) |
| N4SEC | 11 | 45 | 2028-03-21 | — | Active (Vanity) |
| N4SED | 11 | 41 | 2031-11-09 | — | Active (Vanity) |
| N4SEE | 11 | 35 | 2031-02-27 | — | Active (Vanity) |
| N4SEF | 11 | 43 | 2011-10-29 | 2013-10-30 | Available |
| N4SEG | 10 | 43 | 2018-12-18 | 2020-12-19 | Available |
| N4SEH | 11 | 41 | 2029-11-01 | — | Active |
| N4SEI | 12 | 37 | 2035-04-04 | — | Active (Vanity) |
| N4SEJ | 12 | 47 | 2028-03-31 | — | Active (Vanity) |
| N4SEK | 11 | 43 | 2012-03-10 | 2014-03-11 | Available |
| N4SEL | 11 | 43 | 2027-01-14 | — | Active (Vanity) |
| N4SEM | 10 | 41 | 2033-10-26 | — | Active (Vanity) |
| N4SEN | 12 | 39 | 2027-08-25 | — | Active |
| N4SEO | 11 | 45 | 2001-05-07 | 2003-05-08 | Available |
| N4SEP | 11 | 45 | 2027-11-18 | — | Active |
| N4SEQ | 11 | 47 | 2034-02-16 | — | Active (Vanity) |
| N4SER | 12 | 41 | 2034-01-27 | — | Active (Vanity) |
| N4SES | 12 | 39 | 2030-07-27 | — | Active (Vanity) |
| N4SET | 11 | 37 | 2028-07-08 | — | Active (Vanity) |
| N4SEU | 12 | 41 | 2008-06-15 | 2010-06-16 | Available |
| N4SEV | 11 | 43 | 2029-07-28 | — | Active (Vanity) |
| N4SEW | 11 | 43 | 2021-03-20 | 2023-03-21 | Available |
| N4SEX | 11 | 45 | 2030-08-22 | — | Active (Vanity) |
| N4SEY | 11 | 47 | 1998-03-01 | 2000-03-02 | Available |
| N4SEZ | 11 | 45 | 1998-03-01 | 2000-03-02 | Available |
| N4SFA | 11 | 47 | 2030-06-16 | — | Active |
| N4SFB | 11 | 51 | — | — | Available |
| N4SFC | 11 | 53 | 2031-12-29 | — | Active (Vanity) |
| N4SFD | 11 | 49 | 2035-01-22 | — | Active (Vanity) |
| N4SFE | 11 | 43 | 2020-06-22 | 2022-06-23 | Available |
| N4SFF | 11 | 51 | 2026-03-26 | — | Active (Vanity) |
| N4SFG | 10 | 51 | 2022-04-14 | 2024-04-15 | Available |
| N4SFH | 11 | 49 | 2030-07-31 | — | Active |
| N4SFI | 12 | 45 | — | — | Available |
| N4SFJ | 12 | 55 | 2007-11-19 | 2009-11-20 | Available |
| N4SFK | 11 | 51 | 1998-03-01 | 2000-03-02 | Available |
| N4SFL | 11 | 51 | 2035-07-08 | — | Active (Vanity) |
| N4SFM | 10 | 49 | 2009-01-25 | 2011-01-26 | Available |
| N4SFN | 12 | 47 | 2028-01-23 | — | Active |
| N4SFO | 11 | 53 | 2002-06-28 | 2004-06-29 | Available |
| N4SFP | 11 | 53 | 1998-03-01 | 2000-03-02 | Available |
| N4SFQ | 11 | 55 | 2027-12-16 | — | Active |
| N4SFR | 12 | 49 | 2034-03-29 | — | Active |
| N4SFS | 12 | 47 | 2029-07-23 | — | Active (Vanity) |
| N4SFT | 11 | 45 | 2022-06-30 | 2024-07-01 | Available |
| N4SFU | 12 | 49 | 2029-06-01 | — | Active |
| N4SFV | 11 | 51 | — | — | Available |
| N4SFW | 11 | 51 | — | — | Available |
| N4SFX | 11 | 53 | 2024-03-15 | 2026-03-16 | Available |
| N4SFY | 11 | 55 | 2007-12-19 | 2009-12-20 | Available |
| N4SFZ | 11 | 53 | — | — | Available |
| N4SGA | 10 | 47 | 2023-01-19 | 2025-01-20 | Available |
| N4SGB | 10 | 51 | 2028-12-29 | — | Active |
| N4SGC | 10 | 53 | 2019-03-26 | 2021-03-27 | Available |
| N4SGD | 10 | 49 | 1998-03-08 | 2000-03-09 | Available |
| N4SGE | 10 | 43 | 2018-03-26 | 2020-03-27 | Available |
| N4SGF | 10 | 51 | 2008-04-07 | 2010-04-08 | Available |
| N4SGG | 9 | 51 | 2018-03-31 | 2020-04-01 | Available |
| N4SGH | 10 | 49 | 2028-02-20 | — | Active |
| N4SGI | 11 | 45 | 1998-03-08 | 2000-03-09 | Available |