sensors Mode-S transponder
0C4144
ICAO 24-bit transponder address · allocated to Dominican Republic
Currently assigned to HI955 · CESSNA 560XL Citation XLS
- Hex
- 0C4144
- Octal
- 03040504
- Decimal
- 803,140
- Country
- DO
- Tail
- HI955
- Type
- C56X
- Flights observed
- 73
- Distinct callsigns
- 1
- Country
- DO
- Last broadcast
- 10d ago
Last known position
Country allocation
The ICAO 24-bit address 0C4144 falls within the block assigned to Dominican Republic (DO) by ICAO Annex 10, Volume III. Every aircraft registered in Dominican Republic receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| HI955 | - | 73 | 2026-07-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-07 | HI955 | - | Jul 7, 19:55 UTC | Jul 7, 20:15 UTC | 20m |
| 2026-07-06 | HI955 | - | Jul 6, 23:20 UTC | Jul 7, 18:15 UTC | 18h 55m |
| 2026-07-06 | HI955 | - | Jul 6, 18:20 UTC | Jul 6, 18:55 UTC | 35m |
| 2026-07-05 | HI955 | - | Jul 5, 20:25 UTC | Jul 5, 20:35 UTC | 10m |
| 2026-07-02 | HI955 | - | Jul 2, 14:20 UTC | Jul 2, 14:40 UTC | 20m |
| 2026-06-30 | HI955 | - | Jun 30, 12:05 UTC | Jul 1, 01:10 UTC | 13h 5m |
| 2026-06-29 | HI955 | - | Jun 29, 23:44 UTC | Jun 30, 23:00 UTC | 23h 16m |
| 2026-06-29 | HI955 | - | Jun 29, 19:35 UTC | Jun 29, 20:15 UTC | 40m |
| 2026-06-29 | HI955 | - | Jun 29, 16:55 UTC | Jun 29, 17:45 UTC | 50m |
| 2026-06-29 | HI955 | - | Jun 29, 12:49 UTC | Jun 29, 13:09 UTC | 20m |
| 2026-06-28 | HI955 | - | Jun 28, 21:55 UTC | Jun 29, 00:20 UTC | 2h 25m |
| 2026-06-28 | HI955 | - | Jun 28, 14:25 UTC | Jun 28, 18:05 UTC | 3h 40m |
| 2026-06-23 | HI955 | - | Jun 23, 22:55 UTC | Jun 23, 23:14 UTC | 20m |
| 2026-06-23 | HI955 | - | Jun 23, 18:20 UTC | Jun 23, 21:05 UTC | 2h 45m |
| 2026-06-22 | HI955 | - | Jun 22, 11:44 UTC | Jun 22, 14:19 UTC | 2h 35m |
| 2026-06-22 | HI955 | - | Jun 22, 01:00 UTC | Jun 22, 02:45 UTC | 1h 45m |
| 2026-06-20 | HI955 | - | Jun 20, 18:59 UTC | Jun 20, 19:19 UTC | 20m |
| 2026-06-20 | HI955 | - | Jun 20, 14:14 UTC | Jun 20, 16:44 UTC | 2h 30m |
| 2026-06-19 | HI955 | MGY → OPF | Jun 19, 23:14 UTC | Jun 20, 02:19 UTC | 3h 5m |
| 2026-06-19 | HI955 | - | Jun 19, 20:04 UTC | Jun 19, 22:04 UTC | 2h 0m |
| 2026-06-19 | HI955 | - | Jun 19, 14:49 UTC | Jun 19, 18:54 UTC | 4h 5m |
| 2026-06-18 | HI955 | - | Jun 18, 10:35 UTC | Jun 19, 02:50 UTC | 16h 14m |
| 2026-06-17 | HI955 | - | Jun 17, 19:40 UTC | Jun 17, 21:30 UTC | 1h 50m |
| 2026-06-14 | HI955 | - | Jun 14, 23:44 UTC | Jun 15, 00:10 UTC | 25m |
| 2026-06-14 | HI955 | - | Jun 14, 17:45 UTC | Jun 14, 21:35 UTC | 3h 50m |
| 2026-06-14 | HI955 | - | Jun 14, 15:10 UTC | Jun 14, 16:15 UTC | 1h 5m |
| 2026-06-12 | HI955 | - | Jun 12, 23:15 UTC | Jun 13, 00:30 UTC | 1h 15m |
| 2026-06-12 | HI955 | - | Jun 12, 18:55 UTC | Jun 12, 21:20 UTC | 2h 25m |
| 2026-06-12 | HI955 | - | Jun 12, 13:55 UTC | Jun 12, 17:30 UTC | 3h 35m |
| 2026-06-11 | HI955 | - | Jun 11, 20:20 UTC | Jun 11, 20:30 UTC | 10m |
| 2026-06-07 | HI955 | - | Jun 7, 16:50 UTC | Jun 7, 22:15 UTC | 5h 25m |
| 2026-06-04 | HI955 | - | Jun 4, 19:25 UTC | Jun 4, 19:40 UTC | 15m |
| 2026-06-04 | HI955 | - | Jun 4, 17:40 UTC | Jun 4, 17:50 UTC | 10m |
| 2026-06-03 | HI955 | - | Jun 3, 22:55 UTC | Jun 3, 23:05 UTC | 10m |
| 2026-06-02 | HI955 | - | Jun 2, 11:05 UTC | Jun 2, 11:25 UTC | 20m |
| 2026-06-01 | HI955 | - | Jun 1, 12:20 UTC | Jun 1, 12:50 UTC | 30m |
| 2026-05-31 | HI955 | - | May 31, 19:20 UTC | May 31, 19:30 UTC | 10m |
| 2026-05-30 | HI955 | - | May 30, 13:20 UTC | May 30, 15:55 UTC | 2h 35m |
| 2026-05-30 | HI955 | - | May 30, 01:40 UTC | May 30, 01:50 UTC | 10m |
| 2026-05-29 | HI955 | - | May 29, 14:45 UTC | May 29, 23:50 UTC | 9h 5m |
| 2026-05-27 | HI955 | - | May 27, 20:10 UTC | May 27, 20:35 UTC | 25m |
| 2026-05-26 | HI955 | - | May 26, 21:59 UTC | May 27, 20:35 UTC | 22h 35m |
| 2026-05-26 | HI955 | - | May 26, 20:05 UTC | May 26, 20:24 UTC | 20m |
| 2026-05-26 | HI955 | - | May 26, 13:10 UTC | May 26, 13:40 UTC | 30m |
| 2026-05-22 | HI955 | - | May 22, 14:25 UTC | May 22, 14:50 UTC | 25m |
| 2026-05-22 | HI955 | - | May 22, 12:25 UTC | May 22, 12:40 UTC | 15m |
| 2026-05-22 | HI955 | - | May 22, 02:30 UTC | May 22, 02:40 UTC | 10m |
| 2026-05-16 | HI955 | - | May 16, 16:00 UTC | May 16, 16:20 UTC | 20m |
| 2026-05-15 | HI955 | - | May 15, 22:15 UTC | May 15, 23:05 UTC | 50m |
| 2026-05-15 | HI955 | - | May 15, 18:10 UTC | May 15, 20:15 UTC | 2h 5m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the HI955 page for operator, model, and routing details .