District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4OOB | 10 | 59 | 2026-05-05 | — | Active |
| N4OOC | 10 | 61 | 2036-04-22 | — | Active |
| N4OOD | 10 | 57 | 2021-06-04 | 2023-06-05 | Available |
| N4OOE | 10 | 51 | 2036-09-19 | — | Active |
| N4OOF | 10 | 59 | 2003-01-05 | 2005-01-06 | Available |
| N4OOG | 9 | 59 | 2018-08-18 | 2020-08-19 | Available |
| N4OOH | 10 | 57 | 2006-07-25 | 2008-07-26 | Available |
| N4OOI | 11 | 53 | 2001-04-17 | 2003-04-18 | Available |
| N4OOJ | 11 | 63 | 2033-10-05 | — | Active |
| N4OOK | 10 | 59 | 2034-08-20 | — | Active (Vanity) |
| N4OOL | 10 | 59 | 2016-03-06 | 2018-03-07 | Available |
| N4OOM | 9 | 57 | 2027-06-13 | — | Active |
| N4OON | 11 | 55 | — | — | Available |
| N4OOO | 10 | 61 | 2036-05-02 | — | Active |
| N4OOP | 10 | 61 | 2006-08-01 | 2008-08-02 | Available |
| N4OOQ | 10 | 63 | — | — | Available |
| N4OOR | 11 | 57 | 2016-05-16 | 2018-05-17 | Available |
| N4OOS | 11 | 55 | 2024-04-05 | 2026-04-06 | Available |
| N4OOT | 10 | 53 | 2031-02-13 | — | Active (Vanity) |
| N4OOU | 11 | 57 | 2016-05-04 | 2018-05-05 | Available |
| N4OOV | 10 | 59 | 2016-01-26 | 2018-01-27 | Available |
| N4OOW | 10 | 59 | 2027-06-06 | — | Active |
| N4OOX | 10 | 61 | 2029-05-21 | — | Active |
| N4OOY | 10 | 63 | — | — | Available |
| N4OOZ | 10 | 61 | 2032-01-10 | — | Active |
| N4OPA | 10 | 55 | 2032-02-15 | — | Active (Vanity) |
| N4OPB | 10 | 59 | 2014-03-24 | 2016-03-25 | Available |
| N4OPC | 10 | 61 | 2006-02-15 | 2008-02-16 | Available |
| N4OPD | 10 | 57 | 2014-12-20 | 2016-12-21 | Available |
| N4OPE | 10 | 51 | 2028-06-01 | — | Active |
| N4OPF | 10 | 59 | 2009-07-28 | 2011-07-29 | Available |
| N4OPG | 9 | 59 | 2029-12-31 | — | Active |
| N4OPH | 10 | 57 | 2034-05-17 | — | Active (Vanity) |
| N4OPI | 11 | 53 | 2033-07-22 | — | Active (Vanity) |
| N4OPJ | 11 | 63 | 2006-05-20 | 2008-05-21 | Available |
| N4OPK | 10 | 59 | 2028-07-27 | — | Active |
| N4OPL | 10 | 59 | 2002-06-16 | 2004-06-17 | Available |
| N4OPM | 9 | 57 | 2009-12-24 | 2011-12-25 | Available |
| N4OPN | 11 | 55 | 2018-07-27 | 2020-07-28 | Available |
| N4OPO | 10 | 61 | — | — | Available |
| N4OPP | 10 | 61 | — | — | Available |
| N4OPQ | 10 | 63 | 2026-06-17 | — | Active |
| N4OPR | 11 | 57 | 2035-05-30 | — | Active (Vanity) |
| N4OPS | 11 | 55 | 2030-03-03 | — | Active (Vanity) |
| N4OPT | 10 | 53 | 2006-07-29 | 2008-07-30 | Available |
| N4OPU | 11 | 57 | — | — | Available |
| N4OPV | 10 | 59 | 2026-07-30 | — | Active |
| N4OPW | 10 | 59 | — | — | Available |
| N4OPX | 10 | 61 | 2032-12-08 | — | Active |
| N4OPY | 10 | 63 | 1998-12-15 | 2000-12-16 | Available |
| N4OPZ | 10 | 61 | — | — | Available |
| N4OQA | 10 | 57 | 2006-06-20 | 2008-06-21 | Available |
| N4OQB | 10 | 61 | 2028-04-10 | — | Active (Vanity) |
| N4OQC | 10 | 63 | — | — | Available |
| N4OQD | 10 | 59 | 2006-05-14 | 2008-05-15 | Available |
| N4OQE | 10 | 53 | 2006-05-13 | 2008-05-14 | Available |
| N4OQF | 10 | 61 | 2023-02-06 | 2025-02-07 | Available |
| N4OQG | 9 | 61 | 2011-02-26 | 2013-02-27 | Available |
| N4OQH | 10 | 59 | 1997-12-22 | 1999-12-23 | Available |
| N4OQI | 11 | 55 | 2011-12-16 | 2013-12-17 | Available |
| N4OQJ | 11 | 65 | 2032-05-10 | — | Active |
| N4OQK | 10 | 61 | 2024-05-24 | 2026-05-25 | Available |
| N4OQL | 10 | 61 | 2006-06-04 | 2008-06-05 | Available |
| N4OQM | 9 | 59 | — | — | Available |
| N4OQN | 11 | 57 | 2026-09-07 | — | Active |
| N4OQO | 10 | 63 | 2016-05-22 | 2018-05-23 | Available |
| N4OQP | 10 | 63 | 2018-11-07 | 2020-11-08 | Available |
| N4OQQ | 10 | 65 | 2019-12-15 | 2021-12-16 | Available |
| N4OQR | 11 | 59 | 2026-06-17 | — | Active |
| N4OQS | 11 | 57 | 2036-09-18 | — | Active |
| N4OQT | 10 | 55 | 2003-06-01 | 2005-06-02 | Available |
| N4OQU | 11 | 59 | — | — | Available |
| N4OQV | 10 | 61 | 2036-09-04 | — | Active |
| N4OQW | 10 | 61 | 2026-09-08 | — | Active |
| N4OQX | 10 | 63 | 2016-05-16 | 2018-05-17 | Available |
| N4OQY | 10 | 65 | — | — | Available |
| N4OQZ | 10 | 63 | 1998-08-17 | 2000-08-18 | Available |
| N4ORA | 11 | 51 | 2028-03-23 | — | Active |
| N4ORB | 11 | 55 | 2032-05-14 | — | Active |
| N4ORC | 11 | 57 | 2026-11-14 | — | Active |
| N4ORD | 11 | 53 | 2033-12-03 | — | Active (Vanity) |
| N4ORE | 11 | 47 | 2036-09-27 | — | Active |
| N4ORF | 11 | 55 | 2036-05-22 | — | Active |
| N4ORG | 10 | 55 | 2026-05-15 | — | Active |
| N4ORH | 11 | 53 | 1999-05-16 | 2001-05-17 | Available |
| N4ORI | 12 | 49 | 2032-09-15 | — | Active |
| N4ORJ | 12 | 59 | 2010-02-05 | 2012-02-06 | Available |
| N4ORK | 11 | 55 | 2006-05-24 | 2008-05-25 | Available |
| N4ORL | 11 | 55 | 2036-11-19 | — | Active |
| N4ORM | 10 | 53 | 2029-12-12 | — | Active |
| N4ORN | 12 | 51 | 2020-01-09 | 2022-01-10 | Available |
| N4ORO | 11 | 57 | 2036-05-21 | — | Active |
| N4ORP | 11 | 57 | 2036-05-31 | — | Active |
| N4ORQ | 11 | 59 | 2036-06-30 | — | Active |
| N4ORR | 12 | 53 | 2032-07-26 | — | Active (Vanity) |
| N4ORS | 12 | 51 | 2036-07-29 | — | Active |
| N4ORT | 11 | 49 | 2032-01-19 | — | Active (Vanity) |
| N4ORU | 12 | 53 | 2031-08-27 | — | Active |
| N4ORV | 11 | 55 | 2028-03-06 | — | Active (Vanity) |
| N4ORW | 11 | 55 | — | — | Available |