sensors Mode-S transponder
4CAC10
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KGA · AIRBUS A-321neo
- Hex
- 4CAC10
- Octal
- 23126020
- Decimal
- 5,024,784
- Country
- IE
- Tail
- EI-KGA
- Type
- A21N
- Flights observed
- 105
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 9h ago
Last known position
Country allocation
The ICAO 24-bit address 4CAC10 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 |
|---|---|---|---|
| KZR911 | Air Astana | 15 | 2026-05-28 |
| KZR932 | Air Astana | 12 | 2026-05-28 |
| KZR931 | Air Astana | 10 | 2026-05-27 |
| KZR912 | Air Astana | 10 | 2026-05-28 |
| KZR921 | Air Astana | 5 | 2026-05-15 |
| KZR586 | Air Astana | 5 | 2026-05-18 |
| KZR563 | Air Astana | 5 | 2026-06-01 |
| KZR916 | Air Astana | 4 | 2026-05-03 |
| KZR267 | Air Astana | 4 | 2026-04-30 |
| KZR564 | Air Astana | 3 | 2026-05-24 |
| KZR268 | Air Astana | 3 | 2026-04-30 |
| KZR227 | Air Astana | 3 | 2026-05-09 |
| KZR141 | Air Astana | 3 | 2026-04-30 |
| KZR922 | Air Astana | 2 | 2026-05-16 |
| KZR915 | Air Astana | 2 | 2026-04-17 |
| KZR907 | Air Astana | 2 | 2026-05-25 |
| KZR200 | - | 2 | 2026-05-12 |
| KZR142 | Air Astana | 2 | 2026-04-30 |
| KZR964 | Air Astana | 1 | 2026-05-31 |
| KZR963 | Air Astana | 1 | 2026-05-31 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | KZR563 | ALA → HKT | Jun 1, 22:25 UTC | Jun 2, 10:00 UTC | 11h 35m |
| 2026-05-31 | KZR964 | DEL → ALA | May 31, 20:50 UTC | May 31, 21:40 UTC | 50m |
| 2026-05-31 | KZR963 | ALA → DEL | May 31, 18:30 UTC | May 31, 19:30 UTC | 1h 0m |
| 2026-05-30 | KZR563 | ALA → HKT | May 30, 22:05 UTC | May 31, 19:30 UTC | 21h 25m |
| 2026-05-30 | KZR563 | ALA → HKT | May 30, 21:25 UTC | May 31, 19:30 UTC | 22h 5m |
| 2026-05-30 | KZR563 | ALA → HKT | May 30, 03:45 UTC | May 30, 23:05 UTC | 19h 20m |
| 2026-05-29 | KZR563 | ALA → HKT | May 29, 23:00 UTC | May 30, 22:00 UTC | 23h 0m |
| 2026-05-29 | KZR914 | IST → ALA | May 29, 09:40 UTC | May 30, 03:45 UTC | 18h 5m |
| 2026-05-29 | KZR913 | ALA → IST | May 29, 07:35 UTC | May 29, 08:00 UTC | 25m |
| 2026-05-28 | KZR912 | IST → ALA | May 28, 19:15 UTC | May 29, 06:50 UTC | 11h 35m |
| 2026-05-28 | KZR911 | ALA → IST | May 28, 17:20 UTC | May 28, 17:40 UTC | 20m |
| 2026-05-28 | KZR932 | BKK → ALA | May 28, 03:40 UTC | May 28, 16:45 UTC | 13h 5m |
| 2026-05-27 | KZR931 | ALA → BKK | May 27, 22:00 UTC | May 28, 02:00 UTC | 4h 0m |
| 2026-05-26 | KZR912 | IST → ALA | May 26, 20:34 UTC | May 26, 21:20 UTC | 45m |
| 2026-05-26 | KZR911 | ALA → IST | May 26, 16:59 UTC | May 26, 17:15 UTC | 15m |
| 2026-05-26 | KZR911 | ALA → IST | May 26, 06:25 UTC | May 26, 16:20 UTC | 9h 55m |
| 2026-05-25 | KZR907 | ALA → DEL | May 25, 18:20 UTC | May 26, 04:50 UTC | 10h 30m |
| 2026-05-24 | KZR564 | HKT → ALA | May 24, 23:00 UTC | May 25, 16:50 UTC | 17h 50m |
| 2026-05-24 | KZR564 | HKT → ALA | May 24, 21:35 UTC | May 25, 16:50 UTC | 19h 15m |
| 2026-05-23 | KZR932 | BKK → ALA | May 23, 03:35 UTC | May 23, 07:50 UTC | 4h 15m |
| 2026-05-22 | KZR931 | ALA → BKK | May 22, 21:45 UTC | May 23, 01:50 UTC | 4h 5m |
| 2026-05-21 | KZR912 | IST → ALA | May 21, 20:20 UTC | May 21, 21:35 UTC | 1h 15m |
| 2026-05-21 | KZR912 | IST → ALA | May 21, 19:25 UTC | May 21, 19:35 UTC | 10m |
| 2026-05-21 | KZR911 | ALA → IST | May 21, 16:50 UTC | May 21, 17:00 UTC | 10m |
| 2026-05-21 | KZR911 | ALA → IST | May 21, 14:55 UTC | May 21, 16:10 UTC | 1h 15m |
| 2026-05-18 | KZR564 | HKT → ALA | May 18, 14:15 UTC | May 19, 09:50 UTC | 19h 34m |
| 2026-05-18 | KZR586 | MLE → ALA | May 18, 12:35 UTC | May 19, 09:50 UTC | 21h 14m |
| 2026-05-18 | KZR586 | MLE → ALA | May 18, 10:05 UTC | May 19, 09:50 UTC | 23h 44m |
| 2026-05-18 | KZR586 | MLE → ALA | May 18, 08:05 UTC | May 19, 08:00 UTC | 23h 54m |
| 2026-05-18 | KZR586 | MLE → ALA | May 18, 06:25 UTC | May 19, 05:55 UTC | 23h 29m |
| 2026-05-17 | KZR586 | MLE → ALA | May 17, 20:10 UTC | May 18, 16:10 UTC | 20h 0m |
| 2026-05-17 | KZR911 | ALA → IST | May 17, 17:05 UTC | May 17, 17:25 UTC | 20m |
| 2026-05-17 | KZR911 | ALA → IST | May 17, 14:40 UTC | May 17, 16:05 UTC | 1h 25m |
| 2026-05-16 | KZR911 | ALA → IST | May 16, 18:05 UTC | May 17, 16:05 UTC | 22h 0m |
| 2026-05-16 | KZR922 | FRA → NQZ | May 16, 16:05 UTC | May 17, 16:01 UTC | 23h 55m |
| 2026-05-16 | KZR922 | FRA → NQZ | May 16, 14:05 UTC | May 16, 18:50 UTC | 4h 45m |
| 2026-05-15 | KZR921 | NQZ → FRA | May 15, 16:05 UTC | May 16, 11:21 UTC | 19h 16m |
| 2026-05-15 | KZR921 | NQZ → FRA | May 15, 14:05 UTC | May 16, 11:21 UTC | 21h 15m |
| 2026-05-15 | KZR921 | NQZ → FRA | May 15, 13:50 UTC | May 16, 11:21 UTC | 21h 30m |
| 2026-05-15 | KZR921 | NQZ → FRA | May 15, 07:20 UTC | May 15, 11:40 UTC | 4h 20m |
| 2026-05-14 | KZR921 | NQZ → FRA | May 14, 12:35 UTC | May 15, 11:40 UTC | 23h 5m |
| 2026-05-14 | KZR210 | ICN → NQZ | May 14, 07:05 UTC | May 14, 07:25 UTC | 20m |
| 2026-05-14 | KZR209 | NQZ → ICN | May 14, 03:35 UTC | May 14, 03:55 UTC | 20m |
| 2026-05-12 | KZR200 | - | May 12, 03:35 UTC | May 12, 11:40 UTC | 8h 5m |
| 2026-05-11 | KZR200 | - | May 11, 12:05 UTC | May 12, 11:40 UTC | 23h 36m |
| 2026-05-11 | KZR199 | - | May 11, 06:45 UTC | May 12, 04:50 UTC | 22h 5m |
| 2026-05-09 | KZR228 | PEK → NQZ | May 9, 20:30 UTC | May 9, 20:44 UTC | 15m |
| 2026-05-09 | KZR227 | NQZ → PEK | May 9, 18:05 UTC | May 9, 18:20 UTC | 15m |
| 2026-05-09 | KZR227 | NQZ → PEK | May 9, 14:25 UTC | May 9, 14:50 UTC | 25m |
| 2026-05-08 | KZR227 | NQZ → PEK | May 8, 16:05 UTC | May 9, 14:50 UTC | 22h 45m |
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-KGA page for operator, model, and routing details .