District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4SKF | 11 | 51 | 2023-04-03 | 2025-04-04 | Available |
| N4SKG | 10 | 51 | 2013-06-15 | 2015-06-16 | Available |
| N4SKH | 11 | 49 | 2021-01-06 | 2023-01-07 | Available |
| N4SKI | 12 | 45 | 2028-03-12 | — | Active |
| N4SKJ | 12 | 55 | 1998-03-29 | 2000-03-30 | Available |
| N4SKK | 11 | 51 | 1998-03-29 | 2000-03-30 | Available |
| N4SKL | 11 | 51 | 2020-03-13 | 2022-03-14 | Available |
| N4SKM | 10 | 49 | — | — | Available |
| N4SKN | 12 | 47 | 2028-03-11 | — | Active (Vanity) |
| N4SKO | 11 | 53 | 2028-03-31 | — | Active |
| N4SKP | 11 | 53 | 2035-12-09 | — | Active (Vanity) |
| N4SKQ | 11 | 55 | 2029-01-19 | — | Active |
| N4SKR | 12 | 49 | 1999-07-09 | 2001-07-10 | Available |
| N4SKS | 12 | 47 | 2027-04-17 | — | Active (Vanity) |
| N4SKT | 11 | 45 | 2035-05-28 | — | Active (Vanity) |
| N4SKU | 12 | 49 | 2008-04-22 | 2010-04-23 | Available |
| N4SKV | 11 | 51 | 2000-08-21 | 2002-08-22 | Available |
| N4SKW | 11 | 51 | 2017-12-20 | 2019-12-21 | Available |
| N4SKX | 11 | 53 | 2008-01-23 | 2010-01-24 | Available |
| N4SKY | 11 | 55 | 2028-01-16 | — | Active |
| N4SKZ | 11 | 53 | 2020-07-17 | 2022-07-18 | Available |
| N4SLA | 11 | 47 | 2007-11-19 | 2009-11-20 | Available |
| N4SLB | 11 | 51 | 2026-04-01 | — | Active (Vanity) |
| N4SLC | 11 | 53 | 2026-03-24 | 2028-03-25 | Canceled (grace period) |
| N4SLD | 11 | 49 | 2027-11-14 | — | Active |
| N4SLE | 11 | 43 | 2023-06-01 | 2025-06-02 | Available |
| N4SLF | 11 | 51 | 2028-04-17 | — | Active |
| N4SLG | 10 | 51 | 2022-09-07 | 2024-09-08 | Available |
| N4SLH | 11 | 49 | 2020-03-08 | 2022-03-09 | Available |
| N4SLI | 12 | 45 | 2027-11-14 | — | Active |
| N4SLJ | 12 | 55 | 2018-06-11 | 2020-06-12 | Available |
| N4SLK | 11 | 51 | 1998-03-29 | 2000-03-30 | Available |
| N4SLL | 11 | 51 | 2030-01-22 | — | Active |
| N4SLM | 10 | 49 | 2026-08-23 | — | Active (Vanity) |
| N4SLN | 12 | 47 | 2008-06-21 | 2010-06-22 | Available |
| N4SLO | 11 | 53 | 2011-05-13 | 2013-05-14 | Available |
| N4SLP | 11 | 53 | 2031-08-26 | — | Active (Vanity) |
| N4SLQ | 11 | 55 | — | — | Available |
| N4SLR | 12 | 49 | 2021-07-02 | 2023-07-03 | Available |
| N4SLS | 12 | 47 | 2036-04-08 | — | Active (Vanity) |
| N4SLT | 11 | 45 | 2033-12-16 | — | Active (Vanity) |
| N4SLU | 12 | 49 | 2003-01-18 | 2005-01-19 | Available |
| N4SLV | 11 | 51 | 2028-10-16 | — | Active (Vanity) |
| N4SLW | 11 | 51 | — | — | Available |
| N4SLX | 11 | 53 | 2011-08-01 | 2013-08-02 | Available |
| N4SLY | 11 | 55 | 2028-05-14 | — | Active |
| N4SLZ | 11 | 53 | 2007-12-02 | 2009-12-03 | Available |
| N4SMA | 10 | 45 | 2035-12-09 | — | Active (Vanity) |
| N4SMB | 10 | 49 | 2028-03-11 | — | Active (Vanity) |
| N4SMC | 10 | 51 | 2026-03-01 | — | Active (Vanity) |
| N4SMD | 10 | 47 | 2036-06-26 | — | Active (Vanity) |
| N4SME | 10 | 41 | 2031-06-11 | — | Active (Vanity) |
| N4SMF | 10 | 49 | 2033-04-19 | — | Active (Vanity) |
| N4SMG | 9 | 49 | 2031-01-14 | — | Active (Vanity) |
| N4SMH | 10 | 47 | 2036-07-19 | — | Active (Vanity) |
| N4SMI | 11 | 43 | 2028-04-07 | — | Active |
| N4SMJ | 11 | 53 | 2030-12-22 | — | Active (Vanity) |
| N4SMK | 10 | 49 | 2026-06-21 | — | Active (Vanity) |
| N4SML | 10 | 49 | 2034-07-08 | — | Active (Vanity) |
| N4SMM | 9 | 47 | 2028-08-02 | — | Active (Vanity) |
| N4SMN | 11 | 45 | — | — | Available |
| N4SMO | 10 | 51 | 2029-06-20 | — | Active |
| N4SMP | 10 | 51 | 2030-07-20 | — | Active |
| N4SMQ | 10 | 53 | 2029-06-25 | — | Active |
| N4SMR | 11 | 47 | 2028-07-13 | — | Active |
| N4SMS | 11 | 45 | 2030-04-17 | — | Active (Vanity) |
| N4SMT | 10 | 43 | 2020-10-09 | 2022-10-10 | Available |
| N4SMU | 11 | 47 | 2027-10-07 | — | Active |
| N4SMV | 10 | 49 | 2015-04-10 | 2017-04-11 | Available |
| N4SMW | 10 | 49 | 2028-03-31 | — | Active |
| N4SMX | 10 | 51 | 2006-05-12 | 2008-05-13 | Available |
| N4SMY | 10 | 53 | 1998-04-12 | 2000-04-13 | Available |
| N4SMZ | 10 | 51 | 2021-12-09 | 2023-12-10 | Available |
| N4SNA | 12 | 43 | 2034-11-16 | — | Active (Vanity) |
| N4SNB | 12 | 47 | 2035-04-08 | — | Active (Vanity) |
| N4SNC | 12 | 49 | 2007-05-05 | 2009-05-06 | Available |
| N4SND | 12 | 45 | 1998-04-12 | 2000-04-13 | Available |
| N4SNE | 12 | 39 | 2010-03-06 | 2012-03-07 | Available |
| N4SNF | 12 | 47 | 1999-08-15 | 2001-08-16 | Available |
| N4SNG | 11 | 47 | 2018-08-14 | 2020-08-15 | Available |
| N4SNH | 12 | 45 | 2008-04-30 | 2010-05-01 | Available |
| N4SNI | 13 | 41 | 2027-12-05 | — | Active (Vanity) |
| N4SNJ | 13 | 51 | 2024-09-04 | 2026-09-05 | Available |
| N4SNK | 12 | 47 | 2030-03-09 | — | Active (Vanity) |
| N4SNL | 12 | 47 | 2002-05-02 | 2004-05-03 | Available |
| N4SNM | 11 | 45 | 2023-09-07 | 2025-09-08 | Available |
| N4SNN | 13 | 43 | 2027-11-19 | — | Active |
| N4SNO | 12 | 49 | 2018-09-08 | 2020-09-09 | Available |
| N4SNP | 12 | 49 | — | — | Available |
| N4SNQ | 12 | 51 | 2024-12-12 | — | Active |
| N4SNR | 13 | 45 | 2029-04-01 | — | Active |
| N4SNS | 13 | 43 | 2028-06-16 | — | Active |
| N4SNT | 12 | 41 | 2018-08-31 | 2020-09-01 | Available |
| N4SNU | 13 | 45 | 2028-05-05 | — | Active |
| N4SNV | 12 | 47 | 2031-11-12 | — | Active |
| N4SNW | 12 | 47 | 2027-06-20 | — | Active |
| N4SNX | 12 | 49 | 2007-12-23 | 2009-12-24 | Available |
| N4SNY | 12 | 51 | 2035-06-03 | — | Active (Vanity) |
| N4SNZ | 12 | 49 | 1998-04-12 | 2000-04-13 | Available |
| N4SOA | 11 | 49 | 1998-04-12 | 2000-04-13 | Available |