sensors Mode-S transponder
0C43AC
ICAO 24-bit transponder address · allocated to Dominican Republic
Currently assigned to HI1128 · GULFSTREAM 5
- Hex
- 0C43AC
- Octal
- 03041654
- Decimal
- 803,756
- Country
- DO
- Tail
- HI1128
- Type
- GLF5
- Flights observed
- 54
- Distinct callsigns
- 1
- Country
- DO
- Last broadcast
- 12h ago
Last known position
Country allocation
The ICAO 24-bit address 0C43AC 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 |
|---|---|---|---|
| HI1128 | - | 54 | 2026-06-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | HI1128 | - | Jun 1, 22:05 UTC | Jun 2, 07:55 UTC | 9h 50m |
| 2026-06-01 | HI1128 | EWR → DAL | Jun 1, 17:30 UTC | Jun 1, 20:40 UTC | 3h 10m |
| 2026-05-30 | HI1128 | - | May 30, 21:05 UTC | May 31, 15:10 UTC | 18h 5m |
| 2026-05-30 | HI1128 | - | May 30, 17:05 UTC | May 31, 15:10 UTC | 22h 5m |
| 2026-05-30 | HI1128 | - | May 30, 16:35 UTC | May 31, 15:00 UTC | 22h 25m |
| 2026-05-28 | HI1128 | - | May 28, 23:05 UTC | May 29, 08:35 UTC | 9h 30m |
| 2026-05-28 | HI1128 | - | May 28, 10:40 UTC | May 28, 20:40 UTC | 10h 0m |
| 2026-05-27 | HI1128 | - | May 27, 21:35 UTC | May 27, 21:50 UTC | 15m |
| 2026-05-25 | HI1128 | - | May 25, 16:55 UTC | May 26, 00:14 UTC | 7h 20m |
| 2026-05-24 | HI1128 | - | May 24, 20:00 UTC | May 25, 02:05 UTC | 6h 5m |
| 2026-05-23 | HI1128 | - | May 23, 18:25 UTC | May 23, 19:30 UTC | 1h 5m |
| 2026-05-22 | HI1128 | - | May 22, 05:05 UTC | May 22, 14:35 UTC | 9h 30m |
| 2026-05-21 | HI1128 | - | May 21, 15:10 UTC | May 22, 14:35 UTC | 23h 25m |
| 2026-05-21 | HI1128 | - | May 21, 13:45 UTC | May 22, 09:45 UTC | 20h 0m |
| 2026-05-20 | HI1128 | - | May 20, 23:25 UTC | May 21, 01:45 UTC | 2h 20m |
| 2026-05-18 | HI1128 | - | May 18, 19:50 UTC | May 18, 20:05 UTC | 15m |
| 2026-05-18 | HI1128 | - | May 18, 02:30 UTC | May 18, 02:45 UTC | 15m |
| 2026-05-17 | HI1128 | - | May 17, 22:30 UTC | May 18, 00:00 UTC | 1h 30m |
| 2026-05-17 | HI1128 | - | May 17, 15:45 UTC | May 17, 19:05 UTC | 3h 20m |
| 2026-05-15 | HI1128 | - | May 15, 21:15 UTC | May 16, 00:25 UTC | 3h 10m |
| 2026-05-15 | HI1128 | - | May 15, 05:45 UTC | May 15, 13:20 UTC | 7h 35m |
| 2026-05-13 | HI1128 | - | May 13, 21:55 UTC | May 14, 07:25 UTC | 9h 30m |
| 2026-05-12 | HI1128 | - | May 12, 20:10 UTC | May 12, 20:50 UTC | 40m |
| 2026-05-11 | HI1128 | - | May 11, 21:15 UTC | May 11, 21:40 UTC | 25m |
| 2026-05-10 | HI1128 | - | May 10, 23:05 UTC | May 11, 01:40 UTC | 2h 35m |
| 2026-05-10 | HI1128 | - | May 10, 16:00 UTC | May 10, 22:09 UTC | 6h 10m |
| 2026-05-09 | HI1128 | - | May 9, 21:05 UTC | May 9, 23:50 UTC | 2h 45m |
| 2026-05-08 | HI1128 | - | May 8, 01:09 UTC | May 8, 02:09 UTC | 1h 0m |
| 2026-05-07 | HI1128 | - | May 7, 20:05 UTC | May 7, 21:00 UTC | 55m |
| 2026-05-05 | HI1128 | - | May 5, 21:40 UTC | May 5, 22:40 UTC | 1h 0m |
| 2026-05-02 | HI1128 | - | May 2, 21:50 UTC | May 2, 22:00 UTC | 10m |
| 2026-05-02 | HI1128 | - | May 2, 20:10 UTC | May 2, 20:35 UTC | 25m |
| 2026-05-02 | HI1128 | - | May 2, 17:20 UTC | May 2, 17:55 UTC | 35m |
| 2026-05-01 | HI1128 | - | May 1, 23:25 UTC | May 2, 15:55 UTC | 16h 31m |
| 2026-05-01 | HI1128 | - | May 1, 19:40 UTC | May 1, 19:50 UTC | 10m |
| 2026-04-28 | HI1128 | - | Apr 28, 02:30 UTC | Apr 28, 18:15 UTC | 15h 45m |
| 2026-04-25 | HI1128 | - | Apr 25, 23:35 UTC | Apr 26, 00:05 UTC | 30m |
| 2026-04-24 | HI1128 | - | Apr 24, 19:10 UTC | Apr 24, 23:50 UTC | 4h 40m |
| 2026-04-24 | HI1128 | - | Apr 24, 17:30 UTC | Apr 24, 17:55 UTC | 25m |
| 2026-04-23 | HI1128 | - | Apr 23, 21:45 UTC | Apr 24, 16:20 UTC | 18h 35m |
| 2026-04-23 | HI1128 | - | Apr 23, 17:35 UTC | Apr 23, 18:50 UTC | 1h 14m |
| 2026-04-23 | HI1128 | - | Apr 23, 03:40 UTC | Apr 23, 04:40 UTC | 1h 0m |
| 2026-04-19 | HI1128 | - | Apr 19, 16:30 UTC | Apr 19, 17:00 UTC | 30m |
| 2026-04-18 | HI1128 | - | Apr 18, 08:15 UTC | Apr 18, 21:45 UTC | 13h 30m |
| 2026-04-17 | HI1128 | - | Apr 17, 15:20 UTC | Apr 17, 16:30 UTC | 1h 10m |
| 2026-04-17 | HI1128 | - | Apr 17, 15:05 UTC | Apr 18, 12:40 UTC | 21h 35m |
| 2026-04-17 | HI1128 | - | Apr 17, 13:35 UTC | Apr 17, 15:15 UTC | 1h 39m |
| 2026-04-16 | HI1128 | - | Apr 16, 05:24 UTC | Apr 16, 07:05 UTC | 1h 40m |
| 2026-04-16 | HI1128 | - | Apr 16, 01:10 UTC | Apr 16, 02:00 UTC | 50m |
| 2026-04-15 | HI1128 | - | Apr 15, 23:10 UTC | Apr 16, 01:05 UTC | 1h 55m |
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 HI1128 page for operator, model, and routing details .