District 4
2x2 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| AD4SE | 10 | 41 | 2034-05-31 | — | Active |
| AD4SF | 10 | 49 | 2034-05-31 | — | Active |
| AD4SG | 9 | 49 | 2014-05-31 | 2016-06-01 | Available |
| AD4SH | 10 | 47 | 2034-07-06 | — | Active |
| AD4SI | 11 | 43 | — | — | Available |
| AD4SJ | 11 | 53 | — | — | Available |
| AD4SK | 10 | 49 | — | — | Available |
| AD4SL | 10 | 49 | 1999-03-11 | 2001-03-12 | Available |
| AD4SM | 9 | 47 | 2034-03-20 | — | Active |
| AD4SN | 11 | 45 | 2001-09-17 | 2003-09-18 | Available |
| AD4SO | 10 | 51 | 2033-01-19 | — | Active |
| AD4SP | 10 | 51 | 2034-03-08 | — | Active |
| AD4SQ | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| AD4SR | 11 | 47 | 2023-08-03 | 2025-08-04 | Available |
| AD4SS | 11 | 45 | 2014-02-15 | 2016-02-16 | Available |
| AD4ST | 10 | 43 | 2032-01-21 | — | Active |
| AD4SU | 11 | 47 | 2013-02-16 | 2015-02-17 | Available |
| AD4SV | 10 | 49 | 2034-05-03 | — | Active |
| AD4SW | 10 | 49 | 2023-05-21 | 2025-05-22 | Available |
| AD4SX | 10 | 51 | 2025-05-13 | — | Active (Vanity) |
| AD4SY | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| AD4SZ | 10 | 51 | — | — | Available |
| AD4TA | 9 | 43 | 2036-03-15 | — | Active (Vanity) |
| AD4TB | 9 | 47 | — | — | Available |
| AD4TC | 9 | 49 | 2034-01-04 | — | Active |
| AD4TD | 9 | 45 | 2015-08-11 | 2017-08-12 | Available |
| AD4TE | 9 | 39 | 2024-03-05 | 2026-03-06 | Available |
| AD4TF | 9 | 47 | 2023-06-01 | 2025-06-02 | Available |
| AD4TG | 8 | 47 | — | — | Available |
| AD4TH | 9 | 45 | 2025-06-21 | 2027-06-22 | Canceled (grace period) |
| AD4TI | 10 | 41 | 2034-10-24 | — | Active |
| AD4TJ | 10 | 51 | 2032-02-11 | — | Active |
| AD4TK | 9 | 47 | 2033-09-21 | — | Active |
| AD4TL | 9 | 47 | 2024-03-05 | 2026-03-06 | Available |
| AD4TM | 8 | 45 | 2032-12-23 | — | Active (Vanity) |
| AD4TN | 10 | 43 | 2035-11-10 | — | Active (Vanity) |
| AD4TO | 9 | 49 | 2022-06-12 | 2024-06-13 | Available |
| AD4TP | 9 | 49 | 1999-07-27 | 2001-07-28 | Available |
| AD4TQ | 9 | 51 | 2033-10-19 | — | Active |
| AD4TR | 10 | 45 | 2032-04-13 | — | Active (Vanity) |
| AD4TS | 10 | 43 | 1998-05-20 | 2000-05-21 | Available |
| AD4TT | 9 | 41 | 2033-08-03 | — | Active |
| AD4TU | 10 | 45 | — | — | Available |
| AD4TV | 9 | 47 | 2003-10-05 | 2005-10-06 | Available |
| AD4TW | 9 | 47 | 2023-08-24 | 2025-08-25 | Available |
| AD4TX | 9 | 49 | 2034-04-05 | — | Active |
| AD4TY | 9 | 51 | 2034-01-04 | — | Active |
| AD4TZ | 9 | 49 | 2033-06-08 | — | Active |
| AD4UA | 10 | 47 | 2022-02-11 | 2024-02-12 | Available |
| AD4UB | 10 | 51 | 2032-07-21 | — | Active |
| AD4UC | 10 | 53 | 2024-07-15 | 2026-07-16 | Available |
| AD4UD | 10 | 49 | 2034-02-22 | — | Active |
| AD4UE | 10 | 43 | 2004-04-05 | 2006-04-06 | Available |
| AD4UF | 10 | 51 | 2003-10-19 | 2005-10-20 | Available |
| AD4UG | 9 | 51 | — | — | Available |
| AD4UH | 10 | 49 | 2034-05-31 | — | Active |
| AD4UI | 11 | 45 | 2002-10-16 | 2004-10-17 | Available |
| AD4UJ | 11 | 55 | 1999-02-03 | 2001-02-04 | Available |
| AD4UK | 10 | 51 | 2008-09-27 | 2010-09-28 | Available |
| AD4UL | 10 | 51 | 2033-08-24 | — | Active |
| AD4UM | 9 | 49 | 2034-03-29 | — | Active |
| AD4UN | 11 | 47 | 2024-03-29 | 2026-03-30 | Available |
| AD4UO | 10 | 53 | 2027-06-28 | — | Active |
| AD4UP | 10 | 53 | 2034-03-29 | — | Active |
| AD4UQ | 10 | 55 | 2034-03-29 | — | Active |
| AD4UR | 11 | 49 | 2034-03-29 | — | Active |
| AD4US | 11 | 47 | 2024-03-29 | 2026-03-30 | Available |
| AD4UT | 10 | 45 | — | — | Available |
| AD4UU | 11 | 49 | 2034-06-03 | — | Active |
| AD4UV | 10 | 51 | — | — | Available |
| AD4UW | 10 | 51 | 2003-10-19 | 2005-10-20 | Available |
| AD4UX | 10 | 53 | 2024-03-05 | 2026-03-06 | Available |
| AD4UY | 10 | 55 | 1998-10-20 | 2000-10-21 | Available |
| AD4UZ | 10 | 53 | — | — | Available |
| AD4VA | 9 | 49 | 2027-02-13 | — | Active (Vanity) |
| AD4VB | 9 | 53 | 2014-03-01 | 2016-03-02 | Available |
| AD4VC | 9 | 55 | 1998-11-24 | 2000-11-25 | Available |
| AD4VD | 9 | 51 | — | — | Available |
| AD4VE | 9 | 45 | 2030-10-14 | — | Active (Vanity) |
| AD4VF | 9 | 53 | 2036-01-03 | — | Active |
| AD4VG | 8 | 53 | 2014-03-29 | 2016-03-30 | Available |
| AD4VH | 9 | 51 | — | — | Available |
| AD4VI | 10 | 47 | 2034-08-27 | — | Active |
| AD4VJ | 10 | 57 | 2031-06-04 | — | Active |
| AD4VK | 9 | 53 | 2034-03-08 | — | Active |
| AD4VL | 9 | 53 | 2014-05-10 | 2016-05-11 | Available |
| AD4VM | 8 | 51 | 2034-01-23 | — | Active |
| AD4VN | 10 | 49 | 2014-05-03 | 2016-05-04 | Available |
| AD4VO | 9 | 55 | 2003-11-16 | 2005-11-17 | Available |
| AD4VP | 9 | 55 | 2024-03-22 | 2026-03-23 | Available |
| AD4VQ | 9 | 57 | 2003-10-25 | 2005-10-26 | Available |
| AD4VR | 10 | 51 | 2031-10-15 | — | Active (Vanity) |
| AD4VS | 10 | 49 | 2032-08-23 | — | Active |
| AD4VT | 9 | 47 | 2012-06-20 | 2014-06-21 | Available |
| AD4VU | 10 | 51 | 2024-03-29 | 2026-03-30 | Available |
| AD4VV | 9 | 53 | 2014-03-29 | 2016-03-30 | Available |
| AD4VW | 9 | 53 | 2009-01-16 | 2011-01-17 | Available |
| AD4VX | 9 | 55 | 2007-11-17 | 2009-11-18 | Available |
| AD4VY | 9 | 57 | 2026-04-04 | — | Active |
| AD4VZ | 9 | 55 | 1999-06-10 | 2001-06-11 | Available |