sensors Mode-S transponder
4CAC11
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KGB · AIRBUS A-321neo
- Hex
- 4CAC11
- Octal
- 23126021
- Decimal
- 5,024,785
- Country
- IE
- Tail
- EI-KGB
- Type
- A21N
- Flights observed
- 218
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- Jul 26, 07:40 UTC
Last known position
Country allocation
The ICAO 24-bit address 4CAC11 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 |
|---|---|---|---|
| KZR931 | Air Astana | 25 | 2026-07-25 |
| KZR911 | Air Astana | 20 | 2026-07-11 |
| KZR564 | - | 18 | 2026-07-17 |
| KZR932 | Air Astana | 13 | 2026-07-26 |
| KZR563 | Air Astana | 12 | 2026-07-24 |
| KZR912 | - | 9 | 2026-07-19 |
| KZR933 | Air Astana | 6 | 2026-07-02 |
| KZR921 | Air Astana | 6 | 2026-05-13 |
| KZR646 | Air Astana | 6 | 2026-05-27 |
| KZR922 | Air Astana | 5 | 2026-05-13 |
| KZR918 | Air Astana | 5 | 2026-06-04 |
| KZR913 | Air Astana | 5 | 2026-06-27 |
| KZR209 | Air Astana | 5 | 2026-06-06 |
| KZR162 | Air Astana | 5 | 2026-04-25 |
| KZR934 | Air Astana | 4 | 2026-07-03 |
| KZR914 | - | 4 | 2026-07-15 |
| KZR603 | Air Astana | 4 | 2026-06-25 |
| KZR585 | Air Astana | 4 | 2026-05-28 |
| KZR556 | - | 4 | 2026-06-30 |
| KZR210 | Air Astana | 4 | 2026-06-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | KZR932 | BKK → ALA | Jul 26, 03:40 UTC | Jul 26, 07:40 UTC | 4h 1m |
| 2026-07-25 | KZR931 | ALA → BKK | Jul 25, 07:40 UTC | Jul 26, 02:05 UTC | 18h 25m |
| 2026-07-25 | KZR931 | ALA → BKK | Jul 25, 02:20 UTC | Jul 26, 02:05 UTC | 23h 45m |
| 2026-07-25 | KZR931 | ALA → BKK | Jul 25, 00:20 UTC | Jul 26, 00:15 UTC | 23h 55m |
| 2026-07-24 | KZR563 | ALA → HKT | Jul 24, 22:20 UTC | Jul 25, 22:15 UTC | 23h 55m |
| 2026-07-24 | KZR563 | ALA → HKT | Jul 24, 22:00 UTC | Jul 25, 10:00 UTC | 12h 0m |
| 2026-07-24 | KZR563 | ALA → HKT | Jul 24, 04:20 UTC | Jul 25, 02:20 UTC | 22h 0m |
| 2026-07-24 | KZR563 | ALA → HKT | Jul 24, 04:10 UTC | Jul 25, 02:15 UTC | 22h 5m |
| 2026-07-22 | KZR2214 | - | Jul 22, 03:00 UTC | Jul 22, 04:55 UTC | 1h 55m |
| 2026-07-19 | KZR912 | - | Jul 19, 21:05 UTC | Jul 20, 08:50 UTC | 11h 45m |
| 2026-07-19 | KZR932 | - | Jul 19, 03:35 UTC | Jul 19, 18:15 UTC | 14h 40m |
| 2026-07-18 | KZR931 | - | Jul 18, 07:20 UTC | Jul 19, 02:00 UTC | 18h 40m |
| 2026-07-18 | KZR931 | - | Jul 18, 00:19 UTC | Jul 19, 00:15 UTC | 23h 56m |
| 2026-07-17 | KZR564 | - | Jul 17, 22:20 UTC | Jul 18, 22:15 UTC | 23h 56m |
| 2026-07-17 | KZR563 | - | Jul 17, 06:20 UTC | Jul 18, 00:39 UTC | 18h 20m |
| 2026-07-17 | KZR564 | - | Jul 17, 04:49 UTC | Jul 18, 00:39 UTC | 19h 50m |
| 2026-07-16 | KZR564 | - | Jul 16, 22:19 UTC | Jul 17, 22:15 UTC | 23h 55m |
| 2026-07-16 | KZR564 | - | Jul 16, 21:40 UTC | Jul 17, 08:10 UTC | 10h 30m |
| 2026-07-15 | KZR914 | - | Jul 15, 11:30 UTC | Jul 15, 11:50 UTC | 20m |
| 2026-07-15 | KZR914 | - | Jul 15, 09:50 UTC | Jul 15, 10:20 UTC | 30m |
| 2026-07-14 | KZR912 | - | Jul 14, 19:20 UTC | Jul 15, 07:20 UTC | 11h 59m |
| 2026-07-14 | KZR932 | - | Jul 14, 03:35 UTC | Jul 14, 16:20 UTC | 12h 45m |
| 2026-07-13 | KZR931 | - | Jul 13, 06:20 UTC | Jul 14, 01:45 UTC | 19h 25m |
| 2026-07-13 | KZR931 | - | Jul 13, 04:40 UTC | Jul 14, 01:45 UTC | 21h 5m |
| 2026-07-12 | KZR564 | - | Jul 12, 22:20 UTC | Jul 13, 22:15 UTC | 23h 55m |
| 2026-07-12 | KZR564 | - | Jul 12, 21:30 UTC | Jul 13, 08:10 UTC | 10h 40m |
| 2026-07-12 | KZR564 | - | Jul 12, 10:25 UTC | Jul 13, 08:10 UTC | 21h 45m |
| 2026-07-11 | KZR912 | - | Jul 11, 19:05 UTC | Jul 12, 08:01 UTC | 12h 55m |
| 2026-07-11 | KZR911 | ALA → IST | Jul 11, 16:55 UTC | Jul 11, 17:15 UTC | 20m |
| 2026-07-11 | KZR911 | ALA → IST | Jul 11, 03:25 UTC | Jul 11, 16:15 UTC | 12h 50m |
| 2026-07-10 | KZR931 | - | Jul 10, 06:20 UTC | Jul 11, 02:00 UTC | 19h 40m |
| 2026-07-10 | KZR931 | - | Jul 10, 05:45 UTC | Jul 11, 02:00 UTC | 20h 15m |
| 2026-07-09 | KZR564 | - | Jul 9, 22:20 UTC | Jul 10, 22:15 UTC | 23h 55m |
| 2026-07-09 | KZR563 | - | Jul 9, 21:30 UTC | Jul 10, 08:10 UTC | 10h 40m |
| 2026-07-09 | KZR563 | - | Jul 9, 04:20 UTC | Jul 9, 23:55 UTC | 19h 35m |
| 2026-07-09 | KZR563 | - | Jul 9, 03:50 UTC | Jul 9, 23:55 UTC | 20h 5m |
| 2026-07-08 | KZR931 | - | Jul 8, 06:20 UTC | Jul 9, 02:15 UTC | 19h 55m |
| 2026-07-08 | KZR931 | - | Jul 8, 05:45 UTC | Jul 9, 02:15 UTC | 20h 30m |
| 2026-07-07 | KZR564 | - | Jul 7, 22:20 UTC | Jul 8, 22:15 UTC | 23h 55m |
| 2026-07-07 | KZR563 | - | Jul 7, 21:30 UTC | Jul 8, 08:05 UTC | 10h 35m |
| 2026-07-06 | KZR898 | - | Jul 6, 10:25 UTC | Jul 6, 10:55 UTC | 30m |
| 2026-07-06 | KZR897 | - | Jul 6, 08:20 UTC | Jul 6, 08:50 UTC | 30m |
| 2026-07-05 | KZR912 | - | Jul 5, 19:00 UTC | Jul 6, 06:30 UTC | 11h 30m |
| 2026-07-05 | KZR911 | ALA → IST | Jul 5, 16:45 UTC | Jul 5, 17:10 UTC | 25m |
| 2026-07-05 | KZR932 | - | Jul 5, 03:30 UTC | Jul 5, 16:05 UTC | 12h 35m |
| 2026-07-04 | KZR931 | - | Jul 4, 06:20 UTC | Jul 5, 01:55 UTC | 19h 35m |
| 2026-07-04 | KZR931 | - | Jul 4, 04:20 UTC | Jul 5, 01:55 UTC | 21h 35m |
| 2026-07-04 | KZR932 | - | Jul 4, 03:45 UTC | Jul 5, 01:55 UTC | 22h 10m |
| 2026-07-03 | KZR934 | BKK → ALA | Jul 3, 11:35 UTC | Jul 4, 02:05 UTC | 14h 30m |
| 2026-07-02 | KZR933 | ALA → BKK | Jul 2, 20:45 UTC | Jul 3, 10:15 UTC | 13h 30m |
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-KGB page for operator, model, and routing details .