District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| AI4ZS | 11 | 47 | 2026-07-20 | — | Active |
| AI4ZT | 10 | 45 | 2027-06-21 | — | Active |
| AI4ZU | 11 | 49 | 2028-07-06 | — | Active |
| AI4ZV | 10 | 51 | 2026-01-10 | — | Active |
| AI4ZW | 10 | 51 | 2007-07-31 | 2009-08-01 | Available |
| AI4ZX | 10 | 53 | 2007-07-28 | 2009-07-29 | Available |
| AI4ZY | 10 | 55 | 2009-06-26 | 2011-06-27 | Available |
| AI4ZZ | 10 | 53 | 2027-07-09 | — | Active |
| AJ4AA | 10 | 51 | 2034-07-08 | — | Active (Vanity) |
| AJ4AB | 10 | 55 | 2033-06-27 | — | Active |
| AJ4AC | 10 | 57 | 2034-07-14 | — | Active |
| AJ4AD | 10 | 53 | 2028-05-01 | — | Active |
| AJ4AE | 10 | 47 | 2017-07-11 | 2019-07-12 | Available |
| AJ4AF | 10 | 55 | 2037-01-24 | — | Active |
| AJ4AG | 9 | 55 | 2007-08-14 | 2009-08-15 | Available |
| AJ4AH | 10 | 53 | 2032-03-19 | — | Active |
| AJ4AI | 11 | 49 | 2033-06-24 | — | Active |
| AJ4AJ | 11 | 59 | 2027-10-11 | — | Active (Vanity) |
| AJ4AK | 10 | 55 | 2027-07-16 | — | Active |
| AJ4AL | 10 | 55 | 2034-08-10 | — | Active |
| AJ4AM | 9 | 53 | 2027-07-09 | — | Active |
| AJ4AN | 11 | 51 | 2027-07-18 | — | Active |
| AJ4AO | 10 | 57 | 2026-07-12 | — | Active |
| AJ4AP | 10 | 57 | 2007-08-14 | 2009-08-15 | Available |
| AJ4AQ | 10 | 59 | 2027-07-19 | — | Active |
| AJ4AR | 11 | 53 | 2034-01-26 | — | Active |
| AJ4AS | 11 | 51 | 2036-03-22 | — | Active |
| AJ4AT | 10 | 49 | 2036-06-19 | — | Active |
| AJ4AU | 11 | 53 | 2022-04-12 | 2024-04-13 | Available |
| AJ4AV | 10 | 55 | 2027-10-15 | — | Active |
| AJ4AW | 10 | 55 | 2016-03-14 | 2018-03-15 | Available |
| AJ4AX | 10 | 57 | 2027-07-27 | — | Active |
| AJ4AY | 10 | 59 | 2030-05-16 | — | Active (Vanity) |
| AJ4AZ | 10 | 57 | 2032-07-28 | — | Active |
| AJ4BA | 10 | 55 | 2023-06-01 | 2025-06-02 | Available |
| AJ4BB | 10 | 59 | 2033-05-08 | — | Active |
| AJ4BC | 10 | 61 | 2027-05-28 | — | Active |
| AJ4BD | 10 | 57 | 2036-05-21 | — | Active (Vanity) |
| AJ4BE | 10 | 51 | 2007-08-31 | 2009-09-01 | Available |
| AJ4BF | 10 | 59 | 2007-09-05 | 2009-09-06 | Available |
| AJ4BG | 9 | 59 | 2022-02-11 | 2024-02-12 | Available |
| AJ4BH | 10 | 57 | 2036-04-01 | — | Active (Vanity) |
| AJ4BI | 11 | 53 | 2027-08-16 | — | Active |
| AJ4BJ | 11 | 63 | 2007-09-07 | 2009-09-08 | Available |
| AJ4BK | 10 | 59 | 2027-08-17 | — | Active |
| AJ4BL | 10 | 59 | 2016-06-11 | 2018-06-12 | Available |
| AJ4BM | 9 | 57 | 2026-06-16 | — | Active |
| AJ4BN | 11 | 55 | 2033-06-30 | — | Active |
| AJ4BO | 10 | 61 | 2023-06-08 | 2025-06-09 | Available |
| AJ4BP | 10 | 61 | 2027-11-19 | — | Active |
| AJ4BQ | 10 | 63 | 2036-04-05 | — | Active |
| AJ4BR | 11 | 57 | 2032-05-07 | — | Active |
| AJ4BS | 11 | 55 | 2027-09-06 | — | Active |
| AJ4BT | 10 | 53 | 2033-01-24 | — | Active (Vanity) |
| AJ4BU | 11 | 57 | 2008-09-09 | 2010-09-10 | Available |
| AJ4BV | 10 | 59 | 2027-08-09 | — | Active |
| AJ4BW | 10 | 59 | 2034-06-03 | — | Active |
| AJ4BX | 10 | 61 | 2035-04-25 | — | Active (Vanity) |
| AJ4BY | 10 | 63 | 2007-10-19 | 2009-10-20 | Available |
| AJ4BZ | 10 | 61 | 2028-02-23 | — | Active |
| AJ4CA | 10 | 57 | 2027-09-17 | — | Active |
| AJ4CB | 10 | 61 | 2007-10-12 | 2009-10-13 | Available |
| AJ4CC | 10 | 63 | 2028-12-14 | — | Active |
| AJ4CD | 10 | 59 | 2012-09-18 | 2014-09-19 | Available |
| AJ4CE | 10 | 53 | 2012-09-28 | 2014-09-29 | Available |
| AJ4CF | 10 | 61 | 2007-10-10 | 2009-10-11 | Available |
| AJ4CG | 9 | 61 | 2035-12-14 | — | Active |
| AJ4CH | 10 | 59 | 2032-10-10 | — | Active |
| AJ4CI | 11 | 55 | 2022-05-14 | 2024-05-15 | Available |
| AJ4CJ | 11 | 65 | 2027-10-02 | — | Active |
| AJ4CK | 10 | 61 | 2021-04-09 | 2023-04-10 | Available |
| AJ4CL | 10 | 61 | 2027-10-09 | — | Active |
| AJ4CM | 9 | 59 | 2027-10-09 | — | Active |
| AJ4CN | 11 | 57 | 2036-02-22 | — | Active |
| AJ4CO | 10 | 63 | 2027-10-12 | — | Active |
| AJ4CP | 10 | 63 | 2027-07-06 | — | Active |
| AJ4CQ | 10 | 65 | 2017-03-19 | 2019-03-20 | Available |
| AJ4CR | 11 | 59 | 2017-08-17 | 2019-08-18 | Available |
| AJ4CS | 11 | 57 | 2027-10-24 | — | Active (Vanity) |
| AJ4CT | 10 | 55 | 2027-06-25 | — | Active |
| AJ4CU | 11 | 59 | 2034-10-25 | — | Active |
| AJ4CV | 10 | 61 | 2007-11-06 | 2009-11-07 | Available |
| AJ4CW | 10 | 61 | 2027-10-23 | — | Active |
| AJ4CX | 10 | 63 | 2017-10-29 | 2019-10-30 | Available |
| AJ4CY | 10 | 65 | 2007-12-01 | 2009-12-02 | Available |
| AJ4CZ | 10 | 63 | 2007-12-28 | 2009-12-29 | Available |
| AJ4DA | 10 | 53 | 2027-08-06 | — | Active |
| AJ4DB | 10 | 57 | 2034-11-19 | — | Active (Vanity) |
| AJ4DC | 10 | 59 | 2027-11-07 | — | Active |
| AJ4DD | 10 | 55 | 2034-06-08 | — | Active |
| AJ4DE | 10 | 49 | 2008-01-04 | 2010-01-05 | Available |
| AJ4DF | 10 | 57 | 2008-02-20 | 2010-02-21 | Available |
| AJ4DG | 9 | 57 | 2034-08-17 | — | Active |
| AJ4DH | 10 | 55 | 2027-11-27 | — | Active |
| AJ4DI | 11 | 51 | 2027-11-27 | — | Active |
| AJ4DJ | 11 | 61 | 2027-01-26 | — | Active |
| AJ4DK | 10 | 57 | 2027-10-12 | — | Active (Vanity) |
| AJ4DL | 10 | 57 | 2032-11-19 | — | Active (Vanity) |
| AJ4DM | 9 | 55 | 2027-11-27 | — | Active |
| AJ4DN | 11 | 53 | 2029-04-07 | — | Active |