sensors Mode-S transponder
4CAD30
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KGJ · AIRBUS A-321neo
- Hex
- 4CAD30
- Octal
- 23126460
- Decimal
- 5,025,072
- Country
- IE
- Tail
- EI-KGJ
- Type
- A21N
- Flights observed
- 67
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 4CAD30 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 | 14 | 2026-05-02 |
| KZR210 | Air Astana | 8 | 2026-06-01 |
| KZR922 | Air Astana | 6 | 2026-05-03 |
| KZR209 | Air Astana | 6 | 2026-05-31 |
| KZR918 | Air Astana | 3 | 2026-06-01 |
| KZR227 | Air Astana | 3 | 2026-04-29 |
| KZR194 | Air Astana | 3 | 2026-05-27 |
| KZR174 | Air Astana | 3 | 2026-04-15 |
| KZR173 | Air Astana | 3 | 2026-04-15 |
| KZR917 | Air Astana | 2 | 2026-06-01 |
| KZR664 | Air Astana | 2 | 2026-05-19 |
| KZR564 | Air Astana | 2 | 2026-05-23 |
| KZR267 | Air Astana | 2 | 2026-05-25 |
| KZR157 | Air Astana | 2 | 2026-05-30 |
| KZR8002 | Air Astana | 1 | 2026-06-02 |
| KZR8001 | Air Astana | 1 | 2026-06-02 |
| KZR663 | Air Astana | 1 | 2026-05-19 |
| KZR268 | Air Astana | 1 | 2026-05-21 |
| KZR228 | Air Astana | 1 | 2026-04-29 |
| KZR2100 | Air Astana | 1 | 2026-04-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | KZR8002 | LCA → NQZ | Jun 2, 11:55 UTC | Jun 2, 13:45 UTC | 1h 50m |
| 2026-06-02 | KZR8001 | NQZ → LCA | Jun 2, 09:45 UTC | Jun 2, 09:55 UTC | 10m |
| 2026-06-01 | KZR918 | IST → NQZ | Jun 1, 20:10 UTC | Jun 2, 08:20 UTC | 12h 10m |
| 2026-06-01 | KZR917 | NQZ → IST | Jun 1, 17:55 UTC | Jun 1, 18:20 UTC | 25m |
| 2026-06-01 | KZR917 | NQZ → IST | Jun 1, 06:35 UTC | Jun 1, 17:15 UTC | 10h 40m |
| 2026-06-01 | KZR210 | ICN → NQZ | Jun 1, 01:05 UTC | Jun 1, 01:25 UTC | 20m |
| 2026-05-31 | KZR209 | NQZ → ICN | May 31, 22:10 UTC | May 31, 22:30 UTC | 20m |
| 2026-05-31 | KZR209 | NQZ → ICN | May 31, 00:15 UTC | May 31, 17:50 UTC | 17h 35m |
| 2026-05-30 | KZR157 | NQZ → CXR | May 30, 18:55 UTC | May 31, 17:50 UTC | 22h 55m |
| 2026-05-27 | KZR194 | CXR → ALA | May 27, 04:04 UTC | May 27, 23:50 UTC | 19h 46m |
| 2026-05-27 | KZR194 | CXR → ALA | May 27, 03:14 UTC | May 27, 23:50 UTC | 20h 36m |
| 2026-05-26 | KZR194 | CXR → ALA | May 26, 12:05 UTC | May 27, 07:50 UTC | 19h 46m |
| 2026-05-25 | KZR141 | ALA → TBS | May 25, 22:40 UTC | May 26, 10:20 UTC | 11h 40m |
| 2026-05-25 | KZR267 | ALA → PEK | May 25, 20:50 UTC | May 25, 21:09 UTC | 20m |
| 2026-05-23 | KZR564 | HKT → ALA | May 23, 21:40 UTC | May 24, 08:40 UTC | 11h 0m |
| 2026-05-21 | KZR268 | PEK → ALA | May 21, 23:00 UTC | May 21, 23:20 UTC | 20m |
| 2026-05-21 | KZR267 | ALA → PEK | May 21, 20:30 UTC | May 21, 20:45 UTC | 15m |
| 2026-05-19 | KZR664 | SCO → ALA | May 19, 17:45 UTC | May 19, 22:40 UTC | 4h 55m |
| 2026-05-19 | KZR663 | SCO → LHR | May 19, 10:15 UTC | May 19, 15:40 UTC | 5h 25m |
| 2026-05-17 | KZR564 | HKT → ALA | May 17, 21:40 UTC | May 18, 08:15 UTC | 10h 35m |
| 2026-05-06 | KZR157 | NQZ → CXR | May 6, 21:05 UTC | May 7, 13:50 UTC | 16h 46m |
| 2026-05-04 | KZR210 | ICN → NQZ | May 4, 07:45 UTC | May 4, 19:05 UTC | 11h 21m |
| 2026-05-04 | KZR210 | ICN → NQZ | May 4, 06:30 UTC | May 4, 06:40 UTC | 10m |
| 2026-05-04 | KZR209 | NQZ → ICN | May 4, 04:00 UTC | May 4, 04:15 UTC | 15m |
| 2026-05-03 | KZR922 | FRA → NQZ | May 3, 14:00 UTC | May 4, 03:00 UTC | 13h 0m |
| 2026-05-02 | KZR921 | NQZ → FRA | May 2, 16:05 UTC | May 3, 11:35 UTC | 19h 29m |
| 2026-05-02 | KZR921 | NQZ → FRA | May 2, 14:05 UTC | May 3, 11:35 UTC | 21h 29m |
| 2026-05-02 | KZR922 | FRA → NQZ | May 2, 13:45 UTC | May 3, 11:35 UTC | 21h 49m |
| 2026-05-02 | KZR921 | NQZ → FRA | May 2, 06:55 UTC | May 2, 11:30 UTC | 4h 35m |
| 2026-04-30 | KZR922 | FRA → NQZ | Apr 30, 13:45 UTC | Apr 30, 17:45 UTC | 4h 0m |
| 2026-04-30 | KZR921 | NQZ → FRA | Apr 30, 06:55 UTC | Apr 30, 11:40 UTC | 4h 45m |
| 2026-04-29 | KZR228 | PEK → NQZ | Apr 29, 20:20 UTC | Apr 29, 20:35 UTC | 15m |
| 2026-04-29 | KZR227 | NQZ → PEK | Apr 29, 18:00 UTC | Apr 29, 18:20 UTC | 20m |
| 2026-04-29 | KZR227 | NQZ → PEK | Apr 29, 14:15 UTC | Apr 29, 14:40 UTC | 25m |
| 2026-04-28 | KZR918 | IST → NQZ | Apr 28, 10:10 UTC | Apr 28, 11:15 UTC | 1h 5m |
| 2026-04-27 | KZR922 | FRA → NQZ | Apr 27, 13:50 UTC | Apr 28, 06:20 UTC | 16h 30m |
| 2026-04-27 | KZR921 | NQZ → FRA | Apr 27, 06:50 UTC | Apr 27, 11:30 UTC | 4h 40m |
| 2026-04-26 | KZR921 | NQZ → FRA | Apr 26, 12:30 UTC | Apr 27, 11:30 UTC | 23h 0m |
| 2026-04-26 | KZR921 | NQZ → FRA | Apr 26, 08:05 UTC | Apr 27, 08:00 UTC | 23h 55m |
| 2026-04-26 | KZR2100 | ICN → NQZ | Apr 26, 06:45 UTC | Apr 26, 06:55 UTC | 10m |
| 2026-04-26 | KZR2090 | NQZ → ICN | Apr 26, 03:10 UTC | Apr 26, 03:30 UTC | 20m |
| 2026-04-25 | KZR922 | FRA → NQZ | Apr 25, 13:55 UTC | Apr 26, 02:20 UTC | 12h 25m |
| 2026-04-25 | KZR921 | NQZ → FRA | Apr 25, 07:15 UTC | Apr 25, 11:55 UTC | 4h 40m |
| 2026-04-24 | KZR921 | NQZ → FRA | Apr 24, 14:05 UTC | Apr 25, 11:55 UTC | 21h 50m |
| 2026-04-24 | KZR921 | NQZ → FRA | Apr 24, 13:45 UTC | Apr 25, 11:55 UTC | 22h 10m |
| 2026-04-23 | KZR210 | ICN → NQZ | Apr 23, 12:35 UTC | Apr 23, 13:05 UTC | 30m |
| 2026-04-23 | KZR210 | ICN → NQZ | Apr 23, 08:10 UTC | Apr 23, 08:40 UTC | 30m |
| 2026-04-23 | KZR210 | ICN → NQZ | Apr 23, 06:55 UTC | Apr 23, 07:10 UTC | 15m |
| 2026-04-23 | KZR209 | NQZ → ICN | Apr 23, 03:15 UTC | Apr 23, 03:35 UTC | 20m |
| 2026-04-23 | KZR209 | NQZ → ICN | Apr 23, 02:00 UTC | Apr 23, 02:20 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-KGJ page for operator, model, and routing details .