District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| AC4FS | 10 | 53 | 2031-05-14 | — | Active |
| AC4FT | 9 | 51 | 2031-09-04 | — | Active |
| AC4FU | 10 | 55 | — | — | Available |
| AC4FV | 9 | 57 | — | — | Available |
| AC4FW | 9 | 57 | 2021-05-21 | 2023-05-22 | Available |
| AC4FX | 9 | 59 | 2022-10-24 | 2024-10-25 | Available |
| AC4FY | 9 | 61 | 2001-05-28 | 2003-05-29 | Available |
| AC4FZ | 9 | 59 | 2033-06-29 | — | Active |
| AC4GA | 8 | 53 | 2035-09-27 | — | Active (Vanity) |
| AC4GB | 8 | 57 | 2031-05-28 | — | Active |
| AC4GC | 8 | 59 | 2033-01-05 | — | Active |
| AC4GD | 8 | 55 | 2011-06-04 | 2013-06-05 | Available |
| AC4GE | 8 | 49 | 2031-06-12 | — | Active |
| AC4GF | 8 | 57 | 2033-04-20 | — | Active |
| AC4GG | 7 | 57 | 2026-05-08 | 2028-05-09 | Canceled (grace period) |
| AC4GH | 8 | 55 | 2031-08-10 | — | Active |
| AC4GI | 9 | 51 | 2001-09-18 | 2003-09-19 | Available |
| AC4GJ | 9 | 61 | 2028-09-24 | — | Active |
| AC4GK | 8 | 57 | 2031-04-20 | — | Active (Vanity) |
| AC4GL | 8 | 57 | 2011-06-18 | 2013-06-19 | Available |
| AC4GM | 7 | 55 | 2032-05-05 | — | Active |
| AC4GN | 9 | 53 | 2011-06-18 | 2013-06-19 | Available |
| AC4GO | 8 | 59 | 2021-06-18 | 2023-06-19 | Available |
| AC4GP | 8 | 59 | 2033-03-28 | — | Active |
| AC4GQ | 8 | 61 | 2011-06-18 | 2013-06-19 | Available |
| AC4GR | 9 | 55 | 2031-06-18 | — | Active |
| AC4GS | 9 | 53 | 2014-11-05 | 2016-11-06 | Available |
| AC4GT | 8 | 51 | 2021-06-25 | 2023-06-26 | Available |
| AC4GU | 9 | 55 | 2031-07-02 | — | Active |
| AC4GV | 8 | 57 | 2001-07-02 | 2003-07-03 | Available |
| AC4GW | 8 | 57 | 2027-11-10 | — | Active (Vanity) |
| AC4GX | 8 | 59 | 2001-11-26 | 2003-11-27 | Available |
| AC4GY | 8 | 61 | — | — | Available |
| AC4GZ | 8 | 59 | 2031-07-02 | — | Active |
| AC4HA | 9 | 51 | 2003-03-09 | 2005-03-10 | Available |
| AC4HB | 9 | 55 | 2031-10-01 | — | Active |
| AC4HC | 9 | 57 | 2001-07-02 | 2003-07-03 | Available |
| AC4HD | 9 | 53 | 2031-08-05 | — | Active |
| AC4HE | 9 | 47 | 2021-07-02 | 2023-07-03 | Available |
| AC4HF | 9 | 55 | 2021-07-01 | 2023-07-02 | Available |
| AC4HG | 8 | 55 | 2031-07-09 | — | Active |
| AC4HH | 9 | 53 | 2031-07-09 | — | Active |
| AC4HI | 10 | 49 | 2031-07-16 | — | Active |
| AC4HJ | 10 | 59 | 2011-07-16 | 2013-07-17 | Available |
| AC4HK | 9 | 55 | — | — | Available |
| AC4HL | 9 | 55 | 2011-07-16 | 2013-07-17 | Available |
| AC4HM | 8 | 53 | 2030-01-24 | — | Active (Vanity) |
| AC4HN | 10 | 51 | 2022-07-26 | 2024-07-27 | Available |
| AC4HO | 9 | 57 | 2001-07-23 | 2003-07-24 | Available |
| AC4HP | 9 | 57 | 2031-07-26 | — | Active |
| AC4HQ | 9 | 59 | 2032-09-13 | — | Active |
| AC4HR | 10 | 53 | 2023-03-05 | 2025-03-06 | Available |
| AC4HS | 10 | 51 | 2021-07-30 | 2023-07-31 | Available |
| AC4HT | 9 | 49 | 2035-09-26 | — | Active |
| AC4HU | 10 | 53 | — | — | Available |
| AC4HV | 9 | 55 | 2034-05-17 | — | Active |
| AC4HW | 9 | 55 | — | — | Available |
| AC4HX | 9 | 57 | 2031-08-06 | — | Active |
| AC4HY | 9 | 59 | 2011-04-05 | 2013-04-06 | Available |
| AC4HZ | 9 | 57 | — | — | Available |
| AC4IA | 10 | 47 | 2023-07-27 | 2025-07-28 | Available |
| AC4IB | 10 | 51 | 2022-12-27 | 2024-12-28 | Available |
| AC4IC | 10 | 53 | 2021-08-06 | 2023-08-07 | Available |
| AC4ID | 10 | 49 | 2032-03-24 | — | Active |
| AC4IE | 10 | 43 | 2001-08-06 | 2003-08-07 | Available |
| AC4IF | 10 | 51 | 2001-08-06 | 2003-08-07 | Available |
| AC4IG | 9 | 51 | — | — | Available |
| AC4IH | 10 | 49 | 2032-02-14 | — | Active |
| AC4II | 11 | 45 | 2031-08-13 | — | Active |
| AC4IJ | 11 | 55 | 2001-08-13 | 2003-08-14 | Available |
| AC4IK | 10 | 51 | 2011-11-19 | 2013-11-20 | Available |
| AC4IL | 10 | 51 | — | — | Available |
| AC4IM | 9 | 49 | 2032-05-22 | — | Active |
| AC4IN | 11 | 47 | 2011-08-13 | 2013-08-14 | Available |
| AC4IO | 10 | 53 | 2031-08-13 | — | Active |
| AC4IP | 10 | 53 | 2029-06-02 | — | Active (Vanity) |
| AC4IQ | 10 | 55 | 2001-08-20 | 2003-08-21 | Available |
| AC4IR | 11 | 49 | 2021-10-26 | 2023-10-27 | Available |
| AC4IS | 11 | 47 | 2034-01-04 | — | Active |
| AC4IT | 10 | 45 | 2023-04-12 | 2025-04-13 | Available |
| AC4IU | 11 | 49 | 2031-08-27 | — | Active |
| AC4IV | 10 | 51 | 2031-08-27 | — | Active |
| AC4IW | 10 | 51 | 2022-08-27 | 2024-08-28 | Available |
| AC4IX | 10 | 53 | 2018-08-04 | 2020-08-05 | Available |
| AC4IY | 10 | 55 | 2014-09-20 | 2016-09-21 | Available |
| AC4IZ | 10 | 53 | 2011-08-27 | 2013-08-28 | Available |
| AC4JA | 10 | 57 | 2004-01-17 | 2006-01-18 | Available |
| AC4JB | 10 | 61 | 2031-08-27 | — | Active |
| AC4JC | 10 | 63 | 2035-05-16 | — | Active (Vanity) |
| AC4JD | 10 | 59 | 2035-11-21 | — | Active (Vanity) |
| AC4JE | 10 | 53 | — | — | Available |
| AC4JF | 10 | 61 | 2031-09-10 | — | Active |
| AC4JG | 9 | 61 | 2036-09-30 | — | Active (Vanity) |
| AC4JH | 10 | 59 | 2007-08-29 | 2009-08-30 | Available |
| AC4JI | 11 | 55 | 2031-09-10 | — | Active |
| AC4JJ | 11 | 65 | 2021-09-10 | 2023-09-11 | Available |
| AC4JK | 10 | 61 | 2027-02-27 | — | Active (Vanity) |
| AC4JL | 10 | 61 | 2029-09-17 | — | Active (Vanity) |
| AC4JM | 9 | 59 | 2033-02-15 | — | Active (Vanity) |
| AC4JN | 11 | 57 | 2011-09-17 | 2013-09-18 | Available |