sensors Mode-S transponder
4CAC02
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-KBI · AIRBUS A-320neo
- Hex
- 4CAC02
- Octal
- 23126002
- Decimal
- 5,024,770
- Country
- IE
- Tail
- EI-KBI
- Type
- A20N
- Flights observed
- 44
- Distinct callsigns
- 18
- Country
- IE
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 4CAC02 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| KZR302 | - | 7 | 2026-06-13 |
| KZR907 | Air Astana | 5 | 2026-05-18 |
| KZR301 | Air Astana | 5 | 2026-06-11 |
| KZR140 | Air Astana | 4 | 2026-06-09 |
| KZR139 | Air Astana | 4 | 2026-06-09 |
| KZR908 | Air Astana | 2 | 2026-05-18 |
| KZR886 | Air Astana | 2 | 2026-06-06 |
| KZR346 | Air Astana | 2 | 2026-05-30 |
| KZR345 | Air Astana | 2 | 2026-05-30 |
| KZR170 | Air Astana | 2 | 2026-06-05 |
| KZR169 | Air Astana | 2 | 2026-06-05 |
| KZR938 | Air Astana | 1 | 2026-05-06 |
| KZR937 | Air Astana | 1 | 2026-05-06 |
| KZR660 | Air Astana | 1 | 2026-06-12 |
| KZR659 | Air Astana | 1 | 2026-06-12 |
| KZR335 | Air Astana | 1 | 2026-04-29 |
| KZR314 | Air Astana | 1 | 2026-05-09 |
| KZR277 | Air Astana | 1 | 2026-04-25 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-13 | KZR302 | - | Jun 13, 09:05 UTC | Jun 14, 04:30 UTC | 19h 25m |
| 2026-06-12 | KZR660 | BJV → ALA | Jun 12, 13:25 UTC | Jun 13, 07:45 UTC | 18h 19m |
| 2026-06-12 | KZR659 | ALA → BJV | Jun 12, 09:20 UTC | Jun 12, 11:55 UTC | 2h 35m |
| 2026-06-11 | KZR302 | UKK → ALA | Jun 11, 08:40 UTC | Jun 11, 09:10 UTC | 30m |
| 2026-06-11 | KZR301 | ALA → UKK | Jun 11, 06:55 UTC | Jun 11, 07:15 UTC | 20m |
| 2026-06-09 | KZR140 | TBS → ALA | Jun 9, 18:50 UTC | Jun 9, 19:50 UTC | 1h 0m |
| 2026-06-09 | KZR139 | ALA → TBS | Jun 9, 17:20 UTC | Jun 9, 17:35 UTC | 15m |
| 2026-06-08 | KZR302 | UKK → ALA | Jun 8, 08:45 UTC | Jun 8, 09:10 UTC | 25m |
| 2026-06-08 | KZR301 | ALA → UKK | Jun 8, 06:55 UTC | Jun 8, 07:20 UTC | 25m |
| 2026-06-06 | KZR886 | GUW → ALA | Jun 6, 19:40 UTC | Jun 6, 19:54 UTC | 15m |
| 2026-06-05 | KZR886 | GUW → ALA | Jun 5, 19:50 UTC | Jun 6, 17:54 UTC | 22h 5m |
| 2026-06-05 | KZR170 | BUS → ALA | Jun 5, 06:35 UTC | Jun 5, 07:25 UTC | 50m |
| 2026-06-05 | KZR169 | ALA → BUS | Jun 5, 01:00 UTC | Jun 5, 02:45 UTC | 1h 45m |
| 2026-06-03 | KZR170 | BUS → ALA | Jun 3, 05:45 UTC | Jun 3, 06:35 UTC | 50m |
| 2026-06-03 | KZR169 | ALA → BUS | Jun 3, 02:20 UTC | Jun 3, 02:40 UTC | 20m |
| 2026-05-30 | KZR346 | UKK → NQZ | May 30, 02:30 UTC | May 30, 03:10 UTC | 40m |
| 2026-05-30 | KZR345 | NQZ → UKK | May 30, 00:55 UTC | May 30, 01:20 UTC | 25m |
| 2026-05-27 | KZR140 | TBS → ALA | May 27, 19:00 UTC | May 27, 19:25 UTC | 25m |
| 2026-05-27 | KZR139 | ALA → TBS | May 27, 17:05 UTC | May 27, 17:25 UTC | 20m |
| 2026-05-27 | KZR302 | UKK → ALA | May 27, 08:45 UTC | May 27, 09:15 UTC | 30m |
| 2026-05-26 | KZR140 | TBS → ALA | May 26, 18:19 UTC | May 27, 07:25 UTC | 13h 6m |
| 2026-05-26 | KZR139 | ALA → TBS | May 26, 08:50 UTC | May 26, 17:09 UTC | 8h 20m |
| 2026-05-26 | KZR301 | ALA → UKK | May 26, 06:54 UTC | May 26, 07:19 UTC | 25m |
| 2026-05-21 | KZR346 | UKK → NQZ | May 21, 02:35 UTC | May 21, 03:10 UTC | 35m |
| 2026-05-21 | KZR345 | NQZ → UKK | May 21, 00:30 UTC | May 21, 00:50 UTC | 20m |
| 2026-05-19 | KZR140 | TBS → ALA | May 19, 18:25 UTC | May 19, 18:55 UTC | 30m |
| 2026-05-19 | KZR139 | ALA → TBS | May 19, 16:35 UTC | May 19, 16:55 UTC | 20m |
| 2026-05-18 | KZR908 | DEL → ALA | May 18, 06:40 UTC | May 18, 07:20 UTC | 40m |
| 2026-05-18 | KZR907 | ALA → DEL | May 18, 04:00 UTC | May 18, 04:51 UTC | 50m |
| 2026-05-17 | KZR907 | ALA → DEL | May 17, 07:00 UTC | May 18, 04:51 UTC | 21h 51m |
| 2026-05-17 | KZR907 | ALA → DEL | May 17, 04:20 UTC | May 17, 05:05 UTC | 45m |
| 2026-05-16 | KZR907 | ALA → DEL | May 16, 08:55 UTC | May 17, 05:05 UTC | 20h 10m |
| 2026-05-15 | KZR302 | UKK → ALA | May 15, 09:05 UTC | May 15, 09:30 UTC | 25m |
| 2026-05-15 | KZR301 | ALA → UKK | May 15, 07:20 UTC | May 15, 07:40 UTC | 20m |
| 2026-05-14 | KZR908 | DEL → ALA | May 14, 06:45 UTC | May 14, 07:25 UTC | 40m |
| 2026-05-14 | KZR907 | ALA → DEL | May 14, 03:45 UTC | May 14, 04:35 UTC | 50m |
| 2026-05-09 | KZR314 | SCO → NQZ | May 9, 18:15 UTC | May 9, 18:25 UTC | 10m |
| 2026-05-06 | KZR938 | FRA → URA | May 6, 12:55 UTC | May 6, 17:00 UTC | 4h 5m |
| 2026-05-06 | KZR937 | URA → FRA | May 6, 06:55 UTC | May 6, 11:10 UTC | 4h 15m |
| 2026-04-29 | KZR335 | NQZ → KSN | Apr 29, 23:55 UTC | Apr 30, 00:05 UTC | 10m |
| 2026-04-28 | KZR302 | UKK → ALA | Apr 28, 08:55 UTC | Apr 28, 09:20 UTC | 25m |
| 2026-04-27 | KZR302 | UKK → ALA | Apr 27, 09:00 UTC | Apr 27, 09:30 UTC | 30m |
| 2026-04-27 | KZR301 | ALA → UKK | Apr 27, 07:10 UTC | Apr 27, 07:30 UTC | 20m |
| 2026-04-25 | KZR277 | GUW → GYD | Apr 25, 16:50 UTC | Apr 25, 17:20 UTC | 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-KBI page for operator, model, and routing details .