sensors Mode-S transponder
4CAC0C
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KDE · AIRBUS A-321neo
- Hex
- 4CAC0C
- Octal
- 23126014
- Decimal
- 5,024,780
- Country
- IE
- Tail
- EI-KDE
- Type
- A21N
- Flights observed
- 70
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 12h ago
Last known position
Country allocation
The ICAO 24-bit address 4CAC0C 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 |
|---|---|---|---|
| KZR215 | Air Astana | 17 | 2026-05-30 |
| KZR216 | Air Astana | 5 | 2026-05-30 |
| KZR964 | Air Astana | 4 | 2026-05-04 |
| KZR963 | Air Astana | 4 | 2026-05-04 |
| KZR907 | Air Astana | 4 | 2026-05-22 |
| KZR917 | Air Astana | 3 | 2026-05-21 |
| KZR908 | Air Astana | 3 | 2026-04-17 |
| KZR589 | - | 3 | 2026-06-01 |
| KZR569 | - | 3 | 2026-06-01 |
| KZR558 | Air Astana | 3 | 2026-05-12 |
| KZR557 | - | 3 | 2026-05-12 |
| KZR139 | Air Astana | 3 | 2026-05-22 |
| KZR291 | Air Astana | 2 | 2026-05-23 |
| KZR227 | Air Astana | 2 | 2026-05-25 |
| KZR225 | Air Astana | 2 | 2026-05-29 |
| KZR984 | Air Astana | 1 | 2026-05-13 |
| KZR918 | Air Astana | 1 | 2026-05-21 |
| KZR562 | Air Astana | 1 | 2026-05-19 |
| KZR313 | Air Astana | 1 | 2026-05-20 |
| KZR292 | Air Astana | 1 | 2026-05-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | KZR569 | - | Jun 1, 23:50 UTC | Jun 2, 10:35 UTC | 10h 45m |
| 2026-06-01 | KZR569 | - | Jun 1, 09:05 UTC | Jun 2, 09:00 UTC | 23h 55m |
| 2026-06-01 | KZR569 | - | Jun 1, 08:50 UTC | Jun 2, 03:05 UTC | 18h 15m |
| 2026-06-01 | KZR589 | - | Jun 1, 04:45 UTC | Jun 1, 06:30 UTC | 1h 45m |
| 2026-05-31 | KZR589 | - | May 31, 09:05 UTC | Jun 1, 06:30 UTC | 21h 25m |
| 2026-05-31 | KZR589 | - | May 31, 08:45 UTC | Jun 1, 06:30 UTC | 21h 45m |
| 2026-05-30 | KZR216 | AYT → NQZ | May 30, 09:05 UTC | May 31, 09:00 UTC | 23h 55m |
| 2026-05-30 | KZR216 | AYT → NQZ | May 30, 08:45 UTC | May 30, 10:40 UTC | 1h 55m |
| 2026-05-30 | KZR215 | NQZ → AYT | May 30, 07:05 UTC | May 30, 07:25 UTC | 20m |
| 2026-05-29 | KZR215 | NQZ → AYT | May 29, 11:05 UTC | May 30, 06:25 UTC | 19h 20m |
| 2026-05-29 | KZR226 | AYT → NQZ | May 29, 10:00 UTC | May 30, 06:25 UTC | 20h 25m |
| 2026-05-29 | KZR225 | NQZ → AYT | May 29, 06:00 UTC | May 29, 06:15 UTC | 15m |
| 2026-05-29 | KZR225 | NQZ → AYT | May 29, 04:35 UTC | May 29, 05:20 UTC | 45m |
| 2026-05-25 | KZR228 | PEK → NQZ | May 25, 20:15 UTC | May 26, 01:20 UTC | 5h 5m |
| 2026-05-25 | KZR227 | NQZ → PEK | May 25, 18:05 UTC | May 25, 18:25 UTC | 20m |
| 2026-05-25 | KZR227 | NQZ → PEK | May 25, 14:30 UTC | May 25, 15:00 UTC | 30m |
| 2026-05-24 | KZR292 | BOM → ALA | May 24, 00:50 UTC | May 24, 02:45 UTC | 1h 55m |
| 2026-05-23 | KZR291 | ALA → BOM | May 23, 07:40 UTC | May 23, 23:10 UTC | 15h 30m |
| 2026-05-22 | KZR907 | ALA → DEL | May 22, 18:40 UTC | May 23, 05:15 UTC | 10h 34m |
| 2026-05-22 | KZR139 | ALA → TBS | May 22, 16:55 UTC | May 22, 17:10 UTC | 15m |
| 2026-05-21 | KZR918 | IST → NQZ | May 21, 09:20 UTC | May 21, 11:30 UTC | 2h 10m |
| 2026-05-21 | KZR917 | NQZ → IST | May 21, 07:00 UTC | May 21, 07:10 UTC | 10m |
| 2026-05-20 | KZR917 | NQZ → IST | May 20, 18:20 UTC | May 21, 06:15 UTC | 11h 55m |
| 2026-05-20 | KZR313 | NQZ → SCO | May 20, 16:35 UTC | May 20, 16:50 UTC | 15m |
| 2026-05-19 | KZR562 | JED → NQZ | May 19, 00:40 UTC | May 19, 12:15 UTC | 11h 35m |
| 2026-05-17 | KZR216 | AYT → NQZ | May 17, 08:55 UTC | May 17, 11:25 UTC | 2h 30m |
| 2026-05-17 | KZR215 | NQZ → AYT | May 17, 04:30 UTC | May 17, 07:25 UTC | 2h 55m |
| 2026-05-16 | KZR215 | NQZ → AYT | May 16, 11:11 UTC | May 17, 07:25 UTC | 20h 15m |
| 2026-05-16 | KZR215 | NQZ → AYT | May 16, 09:40 UTC | May 17, 07:25 UTC | 21h 45m |
| 2026-05-16 | KZR215 | NQZ → AYT | May 16, 08:41 UTC | May 17, 07:00 UTC | 22h 20m |
| 2026-05-16 | KZR215 | NQZ → AYT | May 16, 06:55 UTC | May 16, 07:16 UTC | 20m |
| 2026-05-15 | KZR215 | NQZ → AYT | May 15, 11:10 UTC | May 16, 06:01 UTC | 18h 50m |
| 2026-05-15 | KZR215 | NQZ → AYT | May 15, 10:05 UTC | May 16, 06:01 UTC | 19h 55m |
| 2026-05-15 | KZR215 | NQZ → AYT | May 15, 07:45 UTC | May 15, 08:05 UTC | 20m |
| 2026-05-15 | KZR215 | NQZ → AYT | May 15, 05:50 UTC | May 15, 06:45 UTC | 55m |
| 2026-05-13 | KZR984 | GUW → NQZ | May 13, 19:05 UTC | May 13, 19:15 UTC | 10m |
| 2026-05-13 | KZR216 | AYT → NQZ | May 13, 08:45 UTC | May 13, 11:15 UTC | 2h 30m |
| 2026-05-13 | KZR215 | NQZ → AYT | May 13, 06:55 UTC | May 13, 07:15 UTC | 20m |
| 2026-05-12 | KZR558 | SSH → NQZ | May 12, 11:05 UTC | May 13, 06:10 UTC | 19h 5m |
| 2026-05-12 | KZR558 | SSH → NQZ | May 12, 10:20 UTC | May 13, 06:10 UTC | 19h 50m |
| 2026-05-12 | KZR558 | SSH → NQZ | May 12, 07:05 UTC | May 13, 06:10 UTC | 23h 5m |
| 2026-05-12 | KZR557 | - | May 12, 04:20 UTC | May 12, 13:30 UTC | 9h 10m |
| 2026-05-11 | KZR557 | - | May 11, 11:05 UTC | May 12, 11:00 UTC | 23h 56m |
| 2026-05-11 | KZR557 | - | May 11, 09:10 UTC | May 12, 07:25 UTC | 22h 15m |
| 2026-05-11 | KZR215 | NQZ → AYT | May 11, 07:05 UTC | May 11, 07:25 UTC | 20m |
| 2026-05-10 | KZR215 | NQZ → AYT | May 10, 11:05 UTC | May 11, 06:20 UTC | 19h 15m |
| 2026-05-10 | KZR215 | NQZ → AYT | May 10, 10:05 UTC | May 11, 06:20 UTC | 20h 15m |
| 2026-05-10 | KZR917 | NQZ → IST | May 10, 05:04 UTC | May 11, 04:40 UTC | 23h 35m |
| 2026-05-09 | KZR216 | AYT → NQZ | May 9, 08:40 UTC | May 9, 10:40 UTC | 2h 0m |
| 2026-05-09 | KZR215 | NQZ → AYT | May 9, 06:50 UTC | May 9, 07:10 UTC | 20m |
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-KDE page for operator, model, and routing details .