District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| AB4MM | 7 | 51 | 2034-09-06 | — | Active (Vanity) |
| AB4MN | 9 | 49 | 2018-11-18 | 2020-11-19 | Available |
| AB4MO | 8 | 55 | 2028-09-15 | — | Active |
| AB4MP | 8 | 55 | 2027-03-07 | — | Active (Vanity) |
| AB4MQ | 8 | 57 | 2033-04-11 | — | Active |
| AB4MR | 9 | 51 | — | — | Available |
| AB4MS | 9 | 49 | 2028-11-17 | — | Active |
| AB4MT | 8 | 47 | 2029-12-21 | — | Active (Vanity) |
| AB4MU | 9 | 51 | 1999-01-28 | 2001-01-29 | Available |
| AB4MV | 8 | 53 | 2018-10-20 | 2020-10-21 | Available |
| AB4MW | 8 | 53 | 2034-09-20 | — | Active (Vanity) |
| AB4MX | 8 | 55 | 2021-12-17 | 2023-12-18 | Available |
| AB4MY | 8 | 57 | 2028-12-23 | — | Active |
| AB4MZ | 8 | 55 | 2029-10-29 | — | Active |
| AB4NA | 10 | 47 | 2018-11-04 | 2020-11-05 | Available |
| AB4NB | 10 | 51 | 1999-02-21 | 2001-02-22 | Available |
| AB4NC | 10 | 53 | 2028-10-20 | — | Active |
| AB4ND | 10 | 49 | 2014-10-31 | 2016-11-01 | Available |
| AB4NE | 10 | 43 | 2016-05-06 | 2018-05-07 | Available |
| AB4NF | 10 | 51 | — | — | Available |
| AB4NG | 9 | 51 | 2018-11-05 | 2020-11-06 | Available |
| AB4NH | 10 | 49 | 2025-01-17 | 2027-01-18 | Canceled (grace period) |
| AB4NI | 11 | 45 | 2028-12-05 | — | Active |
| AB4NJ | 11 | 55 | 2028-11-16 | — | Active |
| AB4NK | 10 | 51 | 2034-09-14 | — | Active (Vanity) |
| AB4NL | 10 | 51 | 2028-11-25 | — | Active |
| AB4NM | 9 | 49 | 2029-02-03 | — | Active |
| AB4NN | 11 | 47 | 2032-01-05 | — | Active |
| AB4NO | 10 | 53 | 2036-06-04 | — | Active (Vanity) |
| AB4NP | 10 | 53 | 2033-01-25 | — | Active (Vanity) |
| AB4NQ | 10 | 55 | 2008-12-18 | 2010-12-19 | Available |
| AB4NR | 11 | 49 | 1999-04-04 | 2001-04-05 | Available |
| AB4NS | 11 | 47 | 2021-05-07 | 2023-05-08 | Available |
| AB4NT | 10 | 45 | 2033-02-04 | — | Active (Vanity) |
| AB4NU | 11 | 49 | — | — | Available |
| AB4NV | 10 | 51 | — | — | Available |
| AB4NW | 10 | 51 | 2035-05-02 | — | Active (Vanity) |
| AB4NX | 10 | 53 | 2035-04-14 | — | Active (Vanity) |
| AB4NY | 10 | 55 | 2008-12-22 | 2010-12-23 | Available |
| AB4NZ | 10 | 53 | 2010-12-11 | 2012-12-12 | Available |
| AB4OA | 9 | 53 | 2029-04-23 | — | Active |
| AB4OB | 9 | 57 | 2032-11-29 | — | Active (Vanity) |
| AB4OC | 9 | 59 | 2019-05-02 | 2021-05-03 | Available |
| AB4OD | 9 | 55 | 2030-05-02 | — | Active |
| AB4OE | 9 | 49 | 2009-01-18 | 2011-01-19 | Available |
| AB4OF | 9 | 57 | 2009-01-18 | 2011-01-19 | Available |
| AB4OG | 8 | 57 | 2019-02-27 | 2021-02-28 | Available |
| AB4OH | 9 | 55 | 2030-07-14 | — | Active |
| AB4OI | 10 | 51 | 2009-01-26 | 2011-01-27 | Available |
| AB4OJ | 10 | 61 | 2026-01-19 | — | Active |
| AB4OK | 9 | 57 | 2035-05-09 | — | Active (Vanity) |
| AB4OL | 9 | 57 | 2031-06-14 | — | Active |
| AB4OM | 8 | 55 | 2029-12-30 | — | Active |
| AB4ON | 10 | 53 | 2029-01-28 | — | Active |
| AB4OO | 9 | 59 | 2003-03-04 | 2005-03-05 | Available |
| AB4OP | 9 | 59 | 2021-02-26 | 2023-02-27 | Available |
| AB4OQ | 9 | 61 | — | — | Available |
| AB4OR | 10 | 55 | 2029-01-18 | — | Active |
| AB4OS | 10 | 53 | 2030-01-07 | — | Active |
| AB4OT | 9 | 51 | 2028-03-24 | — | Active (Vanity) |
| AB4OU | 10 | 55 | — | — | Available |
| AB4OV | 9 | 57 | — | — | Available |
| AB4OW | 9 | 57 | 2019-02-12 | 2021-02-13 | Available |
| AB4OX | 9 | 59 | 2009-01-22 | 2011-01-23 | Available |
| AB4OY | 9 | 61 | 1999-06-06 | 2001-06-07 | Available |
| AB4OZ | 9 | 59 | 2029-04-22 | — | Active |
| AB4PA | 9 | 53 | 1999-06-20 | 2001-06-21 | Available |
| AB4PB | 9 | 57 | 2001-04-10 | 2003-04-11 | Available |
| AB4PC | 9 | 59 | 2036-05-08 | — | Active (Vanity) |
| AB4PD | 9 | 55 | 2010-03-30 | 2012-03-31 | Available |
| AB4PE | 9 | 49 | 2019-07-12 | 2021-07-13 | Available |
| AB4PF | 9 | 57 | — | — | Available |
| AB4PG | 8 | 57 | 2032-03-12 | — | Active (Vanity) |
| AB4PH | 9 | 55 | 2019-05-20 | 2021-05-21 | Available |
| AB4PI | 10 | 51 | — | — | Available |
| AB4PJ | 10 | 61 | 2021-02-27 | 2023-02-28 | Available |
| AB4PK | 9 | 57 | 1999-07-03 | 2001-07-04 | Available |
| AB4PL | 9 | 57 | 1999-07-11 | 2001-07-12 | Available |
| AB4PM | 8 | 55 | 2008-11-25 | 2010-11-26 | Available |
| AB4PN | 10 | 53 | 2012-09-25 | 2014-09-26 | Available |
| AB4PO | 9 | 59 | 2019-06-11 | 2021-06-12 | Available |
| AB4PP | 9 | 59 | 2033-05-25 | — | Active |
| AB4PQ | 9 | 61 | 2019-03-22 | 2021-03-23 | Available |
| AB4PR | 10 | 55 | 2029-08-07 | — | Active |
| AB4PS | 10 | 53 | 2033-11-28 | — | Active (Vanity) |
| AB4PT | 9 | 51 | 2029-03-31 | — | Active |
| AB4PU | 10 | 55 | 2025-10-09 | — | Active (Vanity) |
| AB4PV | 9 | 57 | 2029-08-03 | — | Active |
| AB4PW | 9 | 57 | 2019-05-24 | 2021-05-25 | Available |
| AB4PX | 9 | 59 | 2029-09-18 | — | Active |
| AB4PY | 9 | 61 | — | — | Available |
| AB4PZ | 9 | 59 | 1999-08-15 | 2001-08-16 | Available |
| AB4QA | 9 | 55 | 2029-04-28 | — | Active |
| AB4QB | 9 | 59 | 2016-08-03 | 2018-08-04 | Available |
| AB4QC | 9 | 61 | 2027-10-28 | — | Active |
| AB4QD | 9 | 57 | 2012-07-07 | 2014-07-08 | Available |
| AB4QE | 9 | 51 | 2020-02-08 | 2022-02-09 | Available |
| AB4QF | 9 | 59 | 2028-10-23 | — | Active |
| AB4QG | 8 | 59 | 2001-05-22 | 2003-05-23 | Available |
| AB4QH | 9 | 57 | 1999-09-05 | 2001-09-06 | Available |