District 4
2x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| KB4OQZ | 11 | 79 | — | — | Available |
| KB4ORA | 12 | 67 | 2027-01-31 | — | Active |
| KB4ORB | 12 | 71 | — | — | Available |
| KB4ORC | 12 | 73 | — | — | Available |
| KB4ORD | 12 | 69 | 2005-06-06 | 2007-06-07 | Available |
| KB4ORE | 12 | 63 | — | — | Available |
| KB4ORF | 12 | 71 | — | — | Available |
| KB4ORG | 11 | 71 | — | — | Available |
| KB4ORH | 12 | 69 | — | — | Available |
| KB4ORI | 13 | 65 | — | — | Available |
| KB4ORJ | 13 | 75 | — | — | Available |
| KB4ORK | 12 | 71 | — | — | Available |
| KB4ORL | 12 | 71 | — | — | Available |
| KB4ORM | 11 | 69 | — | — | Available |
| KB4ORN | 13 | 67 | 2017-02-18 | 2019-02-19 | Available |
| KB4ORO | 12 | 73 | — | — | Available |
| KB4ORP | 12 | 73 | — | — | Available |
| KB4ORQ | 12 | 75 | — | — | Available |
| KB4ORR | 13 | 69 | — | — | Available |
| KB4ORS | 13 | 67 | — | — | Available |
| KB4ORT | 12 | 65 | — | — | Available |
| KB4ORU | 13 | 69 | 2013-06-29 | 2015-06-30 | Available |
| KB4ORV | 12 | 71 | — | — | Available |
| KB4ORW | 12 | 71 | — | — | Available |
| KB4ORX | 12 | 73 | 2015-09-21 | 2017-09-22 | Available |
| KB4ORY | 12 | 75 | — | — | Available |
| KB4ORZ | 12 | 73 | — | — | Available |
| KB4OSA | 12 | 65 | — | — | Available |
| KB4OSB | 12 | 69 | 2005-12-07 | 2007-12-08 | Available |
| KB4OSC | 12 | 71 | 2018-01-27 | 2020-01-28 | Available |
| KB4OSD | 12 | 67 | — | — | Available |
| KB4OSE | 12 | 61 | — | — | Available |
| KB4OSF | 12 | 69 | 2003-07-13 | 2005-07-14 | Available |
| KB4OSG | 11 | 69 | — | — | Available |
| KB4OSH | 12 | 67 | 1999-10-31 | 2001-11-01 | Available |
| KB4OSI | 13 | 63 | 2028-02-27 | — | Active |
| KB4OSJ | 13 | 73 | — | — | Available |
| KB4OSK | 12 | 69 | 2023-08-19 | 2025-08-20 | Available |
| KB4OSL | 12 | 69 | — | — | Available |
| KB4OSM | 11 | 67 | — | — | Available |
| KB4OSN | 13 | 65 | 2007-09-22 | 2009-09-23 | Available |
| KB4OSO | 12 | 71 | 2015-04-26 | 2017-04-27 | Available |
| KB4OSP | 12 | 71 | — | — | Available |
| KB4OSQ | 12 | 73 | — | — | Available |
| KB4OSR | 13 | 67 | — | — | Available |
| KB4OSS | 13 | 65 | 2029-08-02 | — | Active (Vanity) |
| KB4OST | 12 | 63 | — | — | Available |
| KB4OSU | 13 | 67 | — | — | Available |
| KB4OSV | 12 | 69 | — | — | Available |
| KB4OSW | 12 | 69 | — | — | Available |
| KB4OSX | 12 | 71 | 2032-02-01 | — | Active (Vanity) |
| KB4OSY | 12 | 73 | — | — | Available |
| KB4OSZ | 12 | 71 | — | — | Available |
| KB4OTA | 11 | 63 | — | — | Available |
| KB4OTB | 11 | 67 | — | — | Available |
| KB4OTC | 11 | 69 | — | — | Available |
| KB4OTD | 11 | 65 | 2007-02-21 | 2009-02-22 | Available |
| KB4OTE | 11 | 59 | 2015-06-27 | 2017-06-28 | Available |
| KB4OTF | 11 | 67 | — | — | Available |
| KB4OTG | 10 | 67 | — | — | Available |
| KB4OTH | 11 | 65 | 2015-06-06 | 2017-06-07 | Available |
| KB4OTI | 12 | 61 | 2035-08-03 | — | Active |
| KB4OTJ | 12 | 71 | 2025-10-15 | — | Active |
| KB4OTK | 11 | 67 | 2035-07-24 | — | Active |
| KB4OTL | 11 | 67 | — | — | Available |
| KB4OTM | 10 | 65 | — | — | Available |
| KB4OTN | 12 | 63 | 2036-01-22 | — | Active |
| KB4OTO | 11 | 69 | — | — | Available |
| KB4OTP | 11 | 69 | — | — | Available |
| KB4OTQ | 11 | 71 | — | — | Available |
| KB4OTR | 12 | 65 | — | — | Available |
| KB4OTS | 12 | 63 | — | — | Available |
| KB4OTT | 11 | 61 | 2005-09-06 | 2007-09-07 | Available |
| KB4OTU | 12 | 65 | — | — | Available |
| KB4OTV | 11 | 67 | — | — | Available |
| KB4OTW | 11 | 67 | 2015-04-05 | 2017-04-06 | Available |
| KB4OTX | 11 | 69 | 2015-03-30 | 2017-03-31 | Available |
| KB4OTY | 11 | 71 | — | — | Available |
| KB4OTZ | 11 | 69 | — | — | Available |
| KB4OUA | 12 | 67 | 2007-03-24 | 2009-03-25 | Available |
| KB4OUB | 12 | 71 | 2005-07-12 | 2007-07-13 | Available |
| KB4OUC | 12 | 73 | 2007-04-21 | 2009-04-22 | Available |
| KB4OUD | 12 | 69 | — | — | Available |
| KB4OUE | 12 | 63 | — | — | Available |
| KB4OUF | 12 | 71 | 2026-08-28 | 2028-08-29 | Canceled (grace period) |
| KB4OUG | 11 | 71 | — | — | Available |
| KB4OUH | 12 | 69 | — | — | Available |
| KB4OUI | 13 | 65 | 2028-12-04 | — | Active (Vanity) |
| KB4OUJ | 13 | 75 | 2013-05-11 | 2015-05-12 | Available |
| KB4OUK | 12 | 71 | — | — | Available |
| KB4OUL | 12 | 71 | — | — | Available |
| KB4OUM | 11 | 69 | — | — | Available |
| KB4OUN | 13 | 67 | — | — | Available |
| KB4OUO | 12 | 73 | — | — | Available |
| KB4OUP | 12 | 73 | — | — | Available |
| KB4OUQ | 12 | 75 | — | — | Available |
| KB4OUR | 13 | 69 | 2015-10-12 | 2017-10-13 | Available |
| KB4OUS | 13 | 67 | 2005-03-27 | 2007-03-28 | Available |
| KB4OUT | 12 | 65 | 2026-01-29 | — | Active |
| KB4OUU | 13 | 69 | — | — | Available |