sensors Mode-S transponder
4CA7C6
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KGK · AIRBUS A-321neo
- Hex
- 4CA7C6
- Octal
- 23123706
- Decimal
- 5,023,686
- Country
- IE
- Tail
- EI-KGK
- Type
- A21N
- Flights observed
- 88
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 7h ago
Current position
Country allocation
The ICAO 24-bit address 4CA7C6 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 | 2026-05-06 |
| KZR922 | Air Astana | 9 | 2026-05-07 |
| KZR199 | - | 8 | 2026-04-28 |
| KZR911 | Air Astana | 7 | 2026-05-29 |
| KZR912 | Air Astana | 4 | 2026-05-29 |
| KZR585 | Air Astana | 4 | 2026-05-13 |
| KZR227 | Air Astana | 4 | 2026-04-22 |
| KZR918 | Air Astana | 3 | 2026-04-19 |
| KZR917 | Air Astana | 3 | 2026-04-19 |
| KZR267 | Air Astana | 3 | 2026-05-26 |
| KZR586 | Air Astana | 2 | 2026-05-04 |
| KZR268 | Air Astana | 2 | 2026-05-18 |
| KZR237 | Air Astana | 2 | 2026-05-14 |
| KZR210 | Air Astana | 2 | 2026-04-13 |
| KZR209 | Air Astana | 2 | 2026-04-20 |
| KZR142 | Air Astana | 2 | 2026-05-19 |
| KZR141 | Air Astana | 2 | 2026-05-19 |
| KZR964 | Air Astana | 1 | 2026-05-09 |
| KZR915 | Air Astana | 1 | 2026-05-01 |
| KZR908 | Air Astana | 1 | 2026-05-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KZR912 | IST → ALA | May 29, 19:20 UTC | May 29, 21:10 UTC | 1h 50m |
| 2026-05-29 | KZR911 | ALA → IST | May 29, 17:00 UTC | May 29, 17:30 UTC | 30m |
| 2026-05-29 | KZR911 | ALA → IST | May 29, 14:55 UTC | May 29, 16:20 UTC | 1h 25m |
| 2026-05-27 | KZR912 | IST → ALA | May 27, 19:05 UTC | May 27, 21:10 UTC | 2h 5m |
| 2026-05-26 | KZR911 | ALA → IST | May 26, 22:15 UTC | May 27, 17:20 UTC | 19h 5m |
| 2026-05-26 | KZR267 | ALA → PEK | May 26, 20:15 UTC | May 26, 20:29 UTC | 15m |
| 2026-05-24 | KZR140 | TBS → ALA | May 24, 19:10 UTC | May 24, 19:40 UTC | 30m |
| 2026-05-24 | KZR139 | ALA → TBS | May 24, 16:55 UTC | May 24, 17:15 UTC | 20m |
| 2026-05-23 | KZR912 | IST → ALA | May 23, 19:45 UTC | May 23, 20:55 UTC | 1h 10m |
| 2026-05-23 | KZR912 | IST → ALA | May 23, 18:55 UTC | May 23, 19:05 UTC | 10m |
| 2026-05-23 | KZR911 | ALA → IST | May 23, 17:00 UTC | May 23, 17:10 UTC | 10m |
| 2026-05-23 | KZR911 | ALA → IST | May 23, 15:00 UTC | May 23, 16:15 UTC | 1h 15m |
| 2026-05-21 | KZR222 | FRA → ALA | May 21, 16:50 UTC | May 21, 21:20 UTC | 4h 30m |
| 2026-05-20 | KZR221 | ALA → FRA | May 20, 20:15 UTC | May 21, 14:35 UTC | 18h 20m |
| 2026-05-20 | KZR911 | ALA → IST | May 20, 17:00 UTC | May 20, 17:10 UTC | 10m |
| 2026-05-20 | KZR911 | ALA → IST | May 20, 15:00 UTC | May 20, 16:20 UTC | 1h 20m |
| 2026-05-19 | KZR142 | TBS → ALA | May 19, 11:20 UTC | May 19, 11:50 UTC | 30m |
| 2026-05-19 | KZR141 | ALA → TBS | May 19, 09:40 UTC | May 19, 10:00 UTC | 20m |
| 2026-05-18 | KZR268 | PEK → ALA | May 18, 22:15 UTC | May 18, 22:35 UTC | 20m |
| 2026-05-18 | KZR267 | ALA → PEK | May 18, 20:05 UTC | May 18, 20:20 UTC | 15m |
| 2026-05-18 | KZR8263 | ALA → MED | May 18, 00:40 UTC | May 18, 11:50 UTC | 11h 10m |
| 2026-05-16 | KZR142 | TBS → ALA | May 16, 10:50 UTC | May 16, 11:25 UTC | 35m |
| 2026-05-16 | KZR141 | ALA → TBS | May 16, 08:51 UTC | May 16, 09:10 UTC | 20m |
| 2026-05-15 | KZR264 | - | May 15, 05:10 UTC | May 15, 18:25 UTC | 13h 14m |
| 2026-05-14 | KZR237 | CIT → MED | May 14, 11:35 UTC | May 15, 08:15 UTC | 20h 40m |
| 2026-05-14 | KZR237 | CIT → MED | May 14, 11:05 UTC | May 15, 08:15 UTC | 21h 10m |
| 2026-05-13 | KZR585 | ALA → MLE | May 13, 18:15 UTC | May 14, 12:30 UTC | 18h 15m |
| 2026-05-12 | KZR292 | BOM → ALA | May 12, 21:35 UTC | May 13, 16:55 UTC | 19h 20m |
| 2026-05-12 | KZR291 | ALA → BOM | May 12, 21:10 UTC | May 13, 16:55 UTC | 19h 45m |
| 2026-05-11 | KZR585 | ALA → MLE | May 11, 02:05 UTC | May 11, 12:50 UTC | 10h 45m |
| 2026-05-10 | KZR585 | ALA → MLE | May 10, 06:35 UTC | May 11, 05:30 UTC | 22h 55m |
| 2026-05-09 | KZR964 | DEL → ALA | May 9, 20:20 UTC | May 10, 04:55 UTC | 8h 35m |
| 2026-05-09 | KZR908 | DEL → ALA | May 9, 06:35 UTC | May 9, 18:40 UTC | 12h 5m |
| 2026-05-09 | KZR907 | ALA → DEL | May 9, 04:25 UTC | May 9, 04:50 UTC | 25m |
| 2026-05-07 | KZR922 | FRA → NQZ | May 7, 15:35 UTC | May 8, 11:25 UTC | 19h 50m |
| 2026-05-07 | KZR922 | FRA → NQZ | May 7, 13:50 UTC | May 8, 11:25 UTC | 21h 35m |
| 2026-05-06 | KZR921 | NQZ → FRA | May 6, 18:00 UTC | May 7, 11:35 UTC | 17h 35m |
| 2026-05-06 | KZR921 | NQZ → FRA | May 6, 15:35 UTC | May 7, 11:35 UTC | 20h 0m |
| 2026-05-06 | KZR922 | FRA → NQZ | May 6, 14:20 UTC | May 7, 11:35 UTC | 21h 15m |
| 2026-05-05 | KZR921 | NQZ → FRA | May 5, 15:35 UTC | May 6, 11:30 UTC | 19h 55m |
| 2026-05-05 | KZR922 | FRA → NQZ | May 5, 13:45 UTC | May 6, 11:30 UTC | 21h 45m |
| 2026-05-05 | KZR921 | NQZ → FRA | May 5, 07:05 UTC | May 5, 11:15 UTC | 4h 10m |
| 2026-05-04 | KZR921 | NQZ → FRA | May 4, 11:35 UTC | May 5, 11:15 UTC | 23h 41m |
| 2026-05-04 | KZR586 | MLE → ALA | May 4, 09:35 UTC | May 5, 09:30 UTC | 23h 56m |
| 2026-05-04 | KZR586 | MLE → ALA | May 4, 09:10 UTC | May 5, 07:30 UTC | 22h 21m |
| 2026-05-04 | KZR585 | ALA → MLE | May 4, 02:04 UTC | May 4, 12:35 UTC | 10h 30m |
| 2026-05-02 | KZR268 | PEK → ALA | May 2, 22:25 UTC | May 2, 22:45 UTC | 20m |
| 2026-05-02 | KZR267 | ALA → PEK | May 2, 20:25 UTC | May 2, 20:45 UTC | 20m |
| 2026-05-01 | KZR193 | ALA → CXR | May 1, 11:05 UTC | May 1, 23:45 UTC | 12h 40m |
| 2026-05-01 | KZR915 | ALA → AYT | May 1, 07:15 UTC | May 1, 08:30 UTC | 1h 15m |
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-KGK page for operator, model, and routing details .