sensors Mode-S transponder
4CAC13
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KGD · AIRBUS A-321neo
- Hex
- 4CAC13
- Octal
- 23126023
- Decimal
- 5,024,787
- Country
- IE
- Tail
- EI-KGD
- Type
- A21N
- Flights observed
- 102
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 13h ago
Last known position
Country allocation
The ICAO 24-bit address 4CAC13 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 |
|---|---|---|---|
| KZR921 | Air Astana | 19 | 2026-05-27 |
| KZR931 | Air Astana | 9 | 2026-05-09 |
| KZR922 | Air Astana | 9 | 2026-05-27 |
| KZR585 | Air Astana | 7 | 2026-05-07 |
| KZR932 | Air Astana | 5 | 2026-05-10 |
| KZR911 | Air Astana | 5 | 2026-05-08 |
| KZR572 | - | 5 | 2026-05-18 |
| KZR645 | Air Astana | 4 | 2026-04-22 |
| KZR586 | Air Astana | 4 | 2026-04-16 |
| KZR912 | Air Astana | 3 | 2026-05-08 |
| KZR267 | Air Astana | 3 | 2026-05-28 |
| KZR964 | Air Astana | 2 | 2026-05-29 |
| KZR963 | Air Astana | 2 | 2026-05-28 |
| KZR918 | Air Astana | 2 | 2026-05-23 |
| KZR646 | Air Astana | 2 | 2026-04-22 |
| KZR268 | Air Astana | 2 | 2026-05-01 |
| KZR227 | Air Astana | 2 | 2026-05-20 |
| KZR199 | - | 2 | 2026-05-18 |
| KZR193 | Air Astana | 2 | 2026-05-05 |
| KZR162 | Air Astana | 2 | 2026-04-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KZR964 | DEL → ALA | May 29, 20:35 UTC | May 29, 21:20 UTC | 45m |
| 2026-05-28 | KZR963 | ALA → DEL | May 28, 23:00 UTC | May 29, 18:40 UTC | 19h 40m |
| 2026-05-28 | KZR267 | ALA → PEK | May 28, 20:55 UTC | May 28, 21:15 UTC | 20m |
| 2026-05-27 | KZR922 | FRA → NQZ | May 27, 13:55 UTC | May 27, 17:50 UTC | 3h 55m |
| 2026-05-27 | KZR921 | NQZ → FRA | May 27, 07:05 UTC | May 27, 11:30 UTC | 4h 25m |
| 2026-05-26 | KZR921 | NQZ → FRA | May 26, 14:50 UTC | May 27, 11:30 UTC | 20h 40m |
| 2026-05-26 | KZR922 | FRA → NQZ | May 26, 14:00 UTC | May 27, 11:30 UTC | 21h 30m |
| 2026-05-26 | KZR921 | NQZ → FRA | May 26, 06:59 UTC | May 26, 11:20 UTC | 4h 20m |
| 2026-05-25 | KZR921 | NQZ → FRA | May 25, 14:50 UTC | May 26, 11:20 UTC | 20h 30m |
| 2026-05-25 | KZR921 | NQZ → FRA | May 25, 13:45 UTC | May 26, 11:20 UTC | 21h 35m |
| 2026-05-25 | KZR921 | NQZ → FRA | May 25, 07:00 UTC | May 25, 11:20 UTC | 4h 20m |
| 2026-05-24 | KZR921 | NQZ → FRA | May 24, 12:10 UTC | May 25, 10:45 UTC | 22h 35m |
| 2026-05-24 | KZR2100 | ICN → NQZ | May 24, 06:30 UTC | May 24, 12:40 UTC | 6h 10m |
| 2026-05-24 | KZR2090 | NQZ → ICN | May 24, 03:05 UTC | May 24, 03:25 UTC | 20m |
| 2026-05-23 | KZR918 | IST → NQZ | May 23, 10:30 UTC | May 23, 22:40 UTC | 12h 11m |
| 2026-05-22 | KZR922 | FRA → NQZ | May 22, 13:45 UTC | May 22, 18:10 UTC | 4h 25m |
| 2026-05-21 | KZR921 | NQZ → FRA | May 21, 18:05 UTC | May 22, 11:25 UTC | 17h 20m |
| 2026-05-21 | KZR921 | NQZ → FRA | May 21, 14:50 UTC | May 22, 11:25 UTC | 20h 35m |
| 2026-05-21 | KZR921 | NQZ → FRA | May 21, 14:00 UTC | May 22, 11:25 UTC | 21h 25m |
| 2026-05-20 | KZR921 | NQZ → FRA | May 20, 20:15 UTC | May 21, 11:25 UTC | 15h 10m |
| 2026-05-20 | KZR227 | NQZ → PEK | May 20, 17:55 UTC | May 20, 18:10 UTC | 15m |
| 2026-05-18 | KZR199 | - | May 18, 16:50 UTC | May 19, 11:50 UTC | 18h 59m |
| 2026-05-18 | KZR199 | - | May 18, 14:50 UTC | May 19, 11:50 UTC | 20h 59m |
| 2026-05-18 | KZR572 | - | May 18, 14:05 UTC | May 19, 11:50 UTC | 21h 44m |
| 2026-05-18 | KZR572 | - | May 18, 08:50 UTC | May 19, 08:45 UTC | 23h 54m |
| 2026-05-18 | KZR572 | - | May 18, 06:50 UTC | May 19, 04:30 UTC | 21h 39m |
| 2026-05-18 | KZR572 | - | May 18, 06:25 UTC | May 19, 04:30 UTC | 22h 4m |
| 2026-05-17 | KZR572 | - | May 17, 17:10 UTC | May 18, 16:45 UTC | 23h 35m |
| 2026-05-17 | KZR922 | FRA → NQZ | May 17, 14:50 UTC | May 18, 14:45 UTC | 23h 55m |
| 2026-05-17 | KZR922 | FRA → NQZ | May 17, 13:45 UTC | May 18, 09:35 UTC | 19h 50m |
| 2026-05-17 | KZR921 | NQZ → FRA | May 17, 07:00 UTC | May 17, 11:30 UTC | 4h 30m |
| 2026-05-16 | KZR921 | NQZ → FRA | May 16, 14:16 UTC | May 17, 11:30 UTC | 21h 15m |
| 2026-05-15 | KZR918 | IST → NQZ | May 15, 10:15 UTC | May 15, 11:15 UTC | 1h 0m |
| 2026-05-14 | KZR922 | FRA → NQZ | May 14, 13:50 UTC | May 15, 06:10 UTC | 16h 20m |
| 2026-05-14 | KZR921 | NQZ → FRA | May 14, 06:50 UTC | May 14, 11:25 UTC | 4h 35m |
| 2026-05-13 | KZR921 | NQZ → FRA | May 13, 14:51 UTC | May 14, 11:25 UTC | 20h 35m |
| 2026-05-13 | KZR921 | NQZ → FRA | May 13, 14:35 UTC | May 14, 11:25 UTC | 20h 50m |
| 2026-05-12 | KZR922 | FRA → NQZ | May 12, 17:05 UTC | May 13, 15:00 UTC | 21h 55m |
| 2026-05-12 | KZR922 | FRA → NQZ | May 12, 14:50 UTC | May 13, 14:45 UTC | 23h 55m |
| 2026-05-12 | KZR922 | FRA → NQZ | May 12, 13:51 UTC | May 12, 18:25 UTC | 4h 35m |
| 2026-05-12 | KZR921 | NQZ → FRA | May 12, 07:00 UTC | May 12, 11:30 UTC | 4h 30m |
| 2026-05-11 | KZR921 | NQZ → FRA | May 11, 14:50 UTC | May 12, 11:30 UTC | 20h 41m |
| 2026-05-11 | KZR921 | NQZ → FRA | May 11, 14:25 UTC | May 12, 11:30 UTC | 21h 6m |
| 2026-05-10 | KZR227 | NQZ → PEK | May 10, 20:50 UTC | May 11, 14:50 UTC | 18h 0m |
| 2026-05-10 | KZR932 | BKK → ALA | May 10, 03:25 UTC | May 10, 16:25 UTC | 13h 0m |
| 2026-05-09 | KZR931 | ALA → BKK | May 9, 21:40 UTC | May 10, 01:45 UTC | 4h 5m |
| 2026-05-08 | KZR931 | ALA → BKK | May 8, 22:50 UTC | May 9, 22:45 UTC | 23h 55m |
| 2026-05-08 | KZR912 | IST → ALA | May 8, 21:10 UTC | May 8, 23:05 UTC | 1h 55m |
| 2026-05-08 | KZR911 | ALA → IST | May 8, 16:55 UTC | May 8, 18:20 UTC | 1h 25m |
| 2026-05-07 | KZR585 | ALA → MLE | May 7, 01:55 UTC | May 7, 12:35 UTC | 10h 40m |
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-KGD page for operator, model, and routing details .