sensors Mode-S transponder
4CADE1
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KDG · AIRBUS A-321neo
- Hex
- 4CADE1
- Octal
- 23126741
- Decimal
- 5,025,249
- Country
- IE
- Tail
- EI-KDG
- Type
- A21N
- Flights observed
- 75
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 19h ago
Last known position
Country allocation
The ICAO 24-bit address 4CADE1 falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| KZR908 | Air Astana | 8 | 2026-05-25 |
| KZR915 | Air Astana | 7 | 2026-05-20 |
| KZR963 | Air Astana | 6 | 2026-05-22 |
| KZR907 | Air Astana | 6 | 2026-05-25 |
| KZR964 | Air Astana | 5 | 2026-05-22 |
| KZR292 | Air Astana | 5 | 2026-05-27 |
| KZR215 | Air Astana | 5 | 2026-05-06 |
| KZR925 | Air Astana | 4 | 2026-05-29 |
| KZR917 | Air Astana | 4 | 2026-05-16 |
| KZR291 | Air Astana | 4 | 2026-05-26 |
| KZR227 | Air Astana | 4 | 2026-05-04 |
| KZR916 | Air Astana | 3 | 2026-05-12 |
| KZR263 | Air Astana | 3 | 2026-05-21 |
| KZR216 | Air Astana | 3 | 2026-05-06 |
| KZR918 | Air Astana | 2 | 2026-05-07 |
| KZR228 | Air Astana | 2 | 2026-05-04 |
| KZR926 | Air Astana | 1 | 2026-05-29 |
| KZR266 | - | 1 | 2026-05-18 |
| KZR265 | Air Astana | 1 | 2026-05-17 |
| KZR139 | Air Astana | 1 | 2026-05-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KZR926 | AYT → ALA | May 29, 09:25 UTC | May 29, 11:20 UTC | 1h 55m |
| 2026-05-29 | KZR925 | ALA → AYT | May 29, 05:55 UTC | May 29, 08:10 UTC | 2h 15m |
| 2026-05-28 | KZR925 | ALA → AYT | May 28, 10:20 UTC | May 29, 08:10 UTC | 21h 50m |
| 2026-05-28 | KZR925 | ALA → AYT | May 28, 09:10 UTC | May 29, 08:10 UTC | 23h 0m |
| 2026-05-28 | KZR925 | ALA → AYT | May 28, 06:00 UTC | May 28, 07:55 UTC | 1h 55m |
| 2026-05-27 | KZR292 | BOM → ALA | May 27, 00:30 UTC | May 27, 02:29 UTC | 2h 0m |
| 2026-05-26 | KZR291 | ALA → BOM | May 26, 21:00 UTC | May 26, 23:05 UTC | 2h 5m |
| 2026-05-25 | KZR908 | DEL → ALA | May 25, 08:25 UTC | May 25, 09:05 UTC | 40m |
| 2026-05-25 | KZR907 | ALA → DEL | May 25, 04:20 UTC | May 25, 05:05 UTC | 45m |
| 2026-05-22 | KZR964 | DEL → ALA | May 22, 20:00 UTC | May 22, 20:45 UTC | 45m |
| 2026-05-22 | KZR963 | ALA → DEL | May 22, 17:40 UTC | May 22, 18:35 UTC | 55m |
| 2026-05-21 | KZR263 | ALA → MED | May 21, 05:25 UTC | May 21, 15:45 UTC | 10h 20m |
| 2026-05-20 | KZR263 | ALA → MED | May 20, 12:25 UTC | May 21, 08:25 UTC | 20h 0m |
| 2026-05-20 | KZR263 | ALA → MED | May 20, 11:05 UTC | May 21, 08:25 UTC | 21h 20m |
| 2026-05-20 | KZR915 | ALA → AYT | May 20, 07:30 UTC | May 20, 09:30 UTC | 2h 0m |
| 2026-05-18 | KZR266 | - | May 18, 07:10 UTC | May 18, 18:05 UTC | 10h 55m |
| 2026-05-17 | KZR265 | ALA → JED | May 17, 10:45 UTC | May 18, 10:15 UTC | 23h 30m |
| 2026-05-16 | KZR917 | NQZ → IST | May 16, 18:35 UTC | May 17, 06:25 UTC | 11h 50m |
| 2026-05-15 | KZR964 | DEL → ALA | May 15, 20:45 UTC | May 15, 21:25 UTC | 40m |
| 2026-05-15 | KZR963 | ALA → DEL | May 15, 18:20 UTC | May 15, 19:10 UTC | 50m |
| 2026-05-13 | KZR964 | DEL → ALA | May 13, 20:05 UTC | May 13, 20:45 UTC | 40m |
| 2026-05-13 | KZR908 | DEL → ALA | May 13, 06:40 UTC | May 13, 18:20 UTC | 11h 40m |
| 2026-05-12 | KZR916 | AYT → ALA | May 12, 11:05 UTC | May 13, 04:45 UTC | 17h 40m |
| 2026-05-12 | KZR915 | ALA → AYT | May 12, 09:05 UTC | May 12, 09:20 UTC | 15m |
| 2026-05-12 | KZR915 | ALA → AYT | May 12, 07:00 UTC | May 12, 08:15 UTC | 1h 15m |
| 2026-05-10 | KZR292 | BOM → ALA | May 10, 12:15 UTC | May 11, 03:00 UTC | 14h 45m |
| 2026-05-10 | KZR916 | AYT → ALA | May 10, 11:15 UTC | May 10, 11:35 UTC | 20m |
| 2026-05-10 | KZR915 | ALA → AYT | May 10, 09:24 UTC | May 10, 09:50 UTC | 25m |
| 2026-05-09 | KZR915 | ALA → AYT | May 9, 18:40 UTC | May 10, 08:35 UTC | 13h 55m |
| 2026-05-09 | KZR139 | ALA → TBS | May 9, 16:05 UTC | May 9, 17:15 UTC | 1h 10m |
| 2026-05-07 | KZR918 | IST → NQZ | May 7, 10:30 UTC | May 7, 11:40 UTC | 1h 10m |
| 2026-05-07 | KZR917 | NQZ → IST | May 7, 05:35 UTC | May 7, 06:30 UTC | 55m |
| 2026-05-06 | KZR917 | NQZ → IST | May 6, 10:20 UTC | May 7, 06:30 UTC | 20h 9m |
| 2026-05-06 | KZR216 | AYT → NQZ | May 6, 08:50 UTC | May 7, 06:30 UTC | 21h 39m |
| 2026-05-06 | KZR215 | NQZ → AYT | May 6, 07:01 UTC | May 6, 07:20 UTC | 20m |
| 2026-05-06 | KZR215 | NQZ → AYT | May 6, 05:15 UTC | May 6, 06:15 UTC | 1h 0m |
| 2026-05-04 | KZR228 | PEK → NQZ | May 4, 20:15 UTC | May 4, 20:40 UTC | 25m |
| 2026-05-04 | KZR227 | NQZ → PEK | May 4, 17:55 UTC | May 4, 18:15 UTC | 20m |
| 2026-05-04 | KZR227 | NQZ → PEK | May 4, 14:20 UTC | May 4, 14:45 UTC | 25m |
| 2026-05-02 | KZR216 | AYT → NQZ | May 2, 08:45 UTC | May 2, 10:35 UTC | 1h 50m |
| 2026-05-02 | KZR215 | NQZ → AYT | May 2, 07:00 UTC | May 2, 07:20 UTC | 20m |
| 2026-05-02 | KZR215 | NQZ → AYT | May 2, 05:05 UTC | May 2, 06:15 UTC | 1h 10m |
| 2026-04-29 | KZR964 | DEL → ALA | Apr 29, 20:20 UTC | Apr 29, 21:15 UTC | 55m |
| 2026-04-29 | KZR963 | ALA → DEL | Apr 29, 17:40 UTC | Apr 29, 18:30 UTC | 50m |
| 2026-04-28 | KZR963 | ALA → DEL | Apr 28, 20:20 UTC | Apr 29, 18:30 UTC | 22h 11m |
| 2026-04-28 | KZR963 | ALA → DEL | Apr 28, 06:50 UTC | Apr 28, 18:40 UTC | 11h 50m |
| 2026-04-28 | KZR907 | ALA → DEL | Apr 28, 04:15 UTC | Apr 28, 05:05 UTC | 50m |
| 2026-04-27 | KZR908 | DEL → ALA | Apr 27, 06:45 UTC | Apr 27, 07:20 UTC | 35m |
| 2026-04-27 | KZR907 | ALA → DEL | Apr 27, 04:35 UTC | Apr 27, 05:10 UTC | 35m |
| 2026-04-26 | KZR292 | BOM → ALA | Apr 26, 01:35 UTC | Apr 26, 18:35 UTC | 17h 0m |
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 EI-KDG page for operator, model, and routing details .