District 4
1x3 Callsigns (100)
| Callsign | Phonetic | Morse | End Date | Available Date | Status |
|---|---|---|---|---|---|
| N4BRL | 11 | 53 | 2016-05-13 | 2018-05-14 | Available |
| N4BRM | 10 | 51 | 2027-06-10 | — | Active (Vanity) |
| N4BRN | 12 | 49 | 2027-07-01 | — | Active (Vanity) |
| N4BRO | 11 | 55 | 2030-03-17 | — | Active (Vanity) |
| N4BRP | 11 | 55 | 2030-07-14 | — | Active (Vanity) |
| N4BRQ | 11 | 57 | — | — | Available |
| N4BRR | 12 | 51 | 2035-04-07 | — | Active (Vanity) |
| N4BRS | 12 | 49 | 2026-09-01 | 2028-09-02 | Canceled (grace period) |
| N4BRT | 11 | 47 | 2028-04-28 | — | Active (Vanity) |
| N4BRU | 12 | 51 | 2027-07-20 | — | Active (Vanity) |
| N4BRV | 11 | 53 | 2031-05-21 | — | Active |
| N4BRW | 11 | 53 | 2025-10-23 | — | Active (Vanity) |
| N4BRX | 11 | 55 | 2032-10-29 | — | Active (Vanity) |
| N4BRY | 11 | 57 | 2031-04-27 | — | Active (Vanity) |
| N4BRZ | 11 | 55 | — | — | Available |
| N4BSA | 11 | 47 | 2028-12-19 | — | Active (Vanity) |
| N4BSB | 11 | 51 | 2033-01-10 | — | Active (Vanity) |
| N4BSC | 11 | 53 | 2033-12-05 | — | Active (Vanity) |
| N4BSD | 11 | 49 | 2034-07-09 | — | Active |
| N4BSE | 11 | 43 | 2035-11-28 | — | Active |
| N4BSF | 11 | 51 | 2033-10-26 | — | Active |
| N4BSG | 10 | 51 | 2033-03-07 | — | Active (Vanity) |
| N4BSH | 11 | 49 | 2025-08-29 | 2027-08-30 | Canceled (grace period) |
| N4BSI | 12 | 45 | 2000-03-24 | 2002-03-25 | Available |
| N4BSJ | 12 | 55 | 2029-04-21 | — | Active (Vanity) |
| N4BSK | 11 | 51 | 2012-03-17 | 2014-03-18 | Available |
| N4BSL | 11 | 51 | 2020-05-29 | 2022-05-30 | Available |
| N4BSM | 10 | 49 | 2027-06-09 | — | Active (Vanity) |
| N4BSN | 12 | 47 | 2036-10-10 | — | Active |
| N4BSO | 11 | 53 | 2036-02-07 | — | Active |
| N4BSP | 11 | 53 | 2032-08-06 | — | Active |
| N4BSQ | 11 | 55 | — | — | Available |
| N4BSR | 12 | 49 | 2012-06-02 | 2014-06-03 | Available |
| N4BSS | 12 | 47 | 2025-12-11 | — | Active (Vanity) |
| N4BST | 11 | 45 | 2034-09-20 | — | Active |
| N4BSU | 12 | 49 | — | — | Available |
| N4BSV | 11 | 51 | 2005-01-23 | 2007-01-24 | Available |
| N4BSW | 11 | 51 | 2027-08-05 | — | Active (Vanity) |
| N4BSX | 11 | 53 | 2024-03-26 | 2026-03-27 | Available |
| N4BSY | 11 | 55 | — | — | Available |
| N4BSZ | 11 | 53 | 2025-03-12 | — | Active (Vanity) |
| N4BTA | 10 | 45 | 2029-02-10 | — | Active (Vanity) |
| N4BTB | 10 | 49 | 2033-11-10 | — | Active (Vanity) |
| N4BTC | 10 | 51 | 2023-05-16 | 2025-05-17 | Available |
| N4BTD | 10 | 47 | 2034-01-10 | — | Active |
| N4BTE | 10 | 41 | 2027-11-28 | — | Active |
| N4BTF | 10 | 49 | — | — | Available |
| N4BTG | 9 | 49 | 2034-06-18 | — | Active (Vanity) |
| N4BTH | 10 | 47 | 2032-12-14 | — | Active (Vanity) |
| N4BTI | 11 | 43 | 2035-01-21 | — | Active (Vanity) |
| N4BTJ | 11 | 53 | 2036-02-18 | — | Active (Vanity) |
| N4BTK | 10 | 49 | 2031-05-21 | — | Active (Vanity) |
| N4BTL | 10 | 49 | 2030-08-21 | — | Active (Vanity) |
| N4BTM | 9 | 47 | 2026-12-23 | — | Active (Vanity) |
| N4BTN | 11 | 45 | — | — | Available |
| N4BTO | 10 | 51 | 1998-11-24 | 2000-11-25 | Available |
| N4BTP | 10 | 51 | 2024-04-12 | 2026-04-13 | Available |
| N4BTQ | 10 | 53 | — | — | Available |
| N4BTR | 11 | 47 | 2030-05-21 | — | Active (Vanity) |
| N4BTS | 11 | 45 | 2027-08-16 | — | Active |
| N4BTT | 10 | 43 | 2027-01-14 | — | Active (Vanity) |
| N4BTU | 11 | 47 | 2015-04-13 | 2017-04-14 | Available |
| N4BTV | 10 | 49 | 2024-03-29 | 2026-03-30 | Available |
| N4BTW | 10 | 49 | 2036-05-24 | — | Active (Vanity) |
| N4BTX | 10 | 51 | 2001-02-12 | 2003-02-13 | Available |
| N4BTY | 10 | 53 | — | — | Available |
| N4BTZ | 10 | 51 | 1997-08-05 | 1999-08-06 | Available |
| N4BUA | 11 | 49 | 2027-05-18 | — | Active (Vanity) |
| N4BUB | 11 | 53 | 2035-04-26 | — | Active |
| N4BUC | 11 | 55 | 2016-04-16 | 2018-04-17 | Available |
| N4BUD | 11 | 51 | 2027-06-17 | — | Active (Vanity) |
| N4BUE | 11 | 45 | 2034-03-13 | — | Active (Vanity) |
| N4BUF | 11 | 53 | 2024-09-19 | 2026-09-20 | Available |
| N4BUG | 10 | 53 | 2025-12-08 | — | Active (Vanity) |
| N4BUH | 11 | 51 | — | — | Available |
| N4BUI | 12 | 47 | 2001-09-03 | 2003-09-04 | Available |
| N4BUJ | 12 | 57 | 2016-09-11 | 2018-09-12 | Available |
| N4BUK | 11 | 53 | 2033-10-22 | — | Active |
| N4BUL | 11 | 53 | — | — | Available |
| N4BUM | 10 | 51 | 2022-03-20 | 2024-03-21 | Available |
| N4BUN | 12 | 49 | 2028-09-28 | — | Active |
| N4BUO | 11 | 55 | — | — | Available |
| N4BUP | 11 | 55 | — | — | Available |
| N4BUQ | 11 | 57 | 2027-05-28 | — | Active |
| N4BUR | 12 | 51 | 2028-03-24 | — | Active (Vanity) |
| N4BUS | 12 | 49 | 2028-02-27 | — | Active (Vanity) |
| N4BUT | 11 | 47 | 2029-06-07 | — | Active (Vanity) |
| N4BUU | 12 | 51 | — | — | Available |
| N4BUV | 11 | 53 | — | — | Available |
| N4BUW | 11 | 53 | 2014-05-10 | 2016-05-11 | Available |
| N4BUX | 11 | 55 | 2027-11-10 | — | Active |
| N4BUY | 11 | 57 | 2014-04-12 | 2016-04-13 | Available |
| N4BUZ | 11 | 55 | 2031-06-22 | — | Active (Vanity) |
| N4BVA | 10 | 51 | — | — | Available |
| N4BVB | 10 | 55 | — | — | Available |
| N4BVC | 10 | 57 | 2014-06-17 | 2016-06-18 | Available |
| N4BVD | 10 | 53 | 2005-11-30 | 2007-12-01 | Available |
| N4BVE | 10 | 47 | 2024-03-22 | 2026-03-23 | Available |
| N4BVF | 10 | 55 | 2004-05-24 | 2006-05-25 | Available |
| N4BVG | 9 | 55 | — | — | Available |