Apparatus

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sensors Mode-S transponder

4CAC0C

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-KDE · AIRBUS A-321neo

Hex
4CAC0C
Octal
23126014
Decimal
5,024,780
Country
IE
Tail
EI-KDE
Type
A21N
No current signal · last broadcast 25m ago
Flights observed
160
Distinct callsigns
20
Country
IE
Last broadcast
25m ago

Last known position

Most recent position reported by Mode-S 4CAC0C.

Country allocation

The ICAO 24-bit address 4CAC0C 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
KZR215 - 21 2026-07-08
KZR925 - 11 2026-07-17
KZR963 - 10 2026-07-13
KZR907 - 9 2026-07-17
KZR964 - 8 2026-06-27
KZR908 - 8 2026-07-15
KZR926 - 6 2026-07-17
KZR589 - 6 2026-06-28
KZR557 - 6 2026-07-09
KZR591 - 5 2026-07-03
KZR558 - 5 2026-07-09
KZR292 Air Astana 5 2026-06-14
KZR291 Air Astana 5 2026-06-13
KZR225 Air Astana 5 2026-06-18
KZR216 Air Astana 5 2026-05-30
KZR917 Air Astana 3 2026-05-21
KZR569 - 3 2026-06-01
KZR139 Air Astana 3 2026-05-22
KZR869 - 2 2026-06-23
KZR660 Air Astana 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 KZR907 - Jul 17, 20:15 UTCJul 18, 05:00 UTC8h 46m
2026-07-17 KZR926 - Jul 17, 09:40 UTCJul 17, 18:44 UTC9h 5m
2026-07-17 KZR925 - Jul 17, 06:05 UTCJul 17, 08:15 UTC2h 10m
2026-07-16 KZR925 - Jul 16, 11:05 UTCJul 17, 08:15 UTC21h 10m
2026-07-16 KZR925 - Jul 16, 09:40 UTCJul 17, 08:15 UTC22h 35m
2026-07-16 KZR925 - Jul 16, 05:15 UTCJul 16, 07:50 UTC2h 35m
2026-07-15 KZR908 - Jul 15, 06:20 UTCJul 15, 07:00 UTC40m
2026-07-14 KZR660 BJV → ALA Jul 14, 13:10 UTCJul 15, 04:45 UTC15h 34m
2026-07-13 KZR659 ALA → BJV Jul 13, 19:45 UTCJul 14, 11:40 UTC15h 55m
2026-07-13 KZR963 - Jul 13, 17:35 UTCJul 13, 18:20 UTC45m
2026-07-10 KZR660 BJV → ALA Jul 10, 13:10 UTCJul 10, 15:10 UTC2h 0m
2026-07-10 KZR659 ALA → BJV Jul 10, 08:50 UTCJul 10, 11:35 UTC2h 45m
2026-07-09 KZR558 - Jul 9, 09:05 UTCJul 10, 09:00 UTC23h 55m
2026-07-09 KZR558 - Jul 9, 07:15 UTCJul 9, 09:40 UTC2h 25m
2026-07-09 KZR557 - Jul 9, 02:05 UTCJul 9, 05:05 UTC3h 0m
2026-07-08 KZR557 - Jul 8, 09:05 UTCJul 9, 05:05 UTC20h 0m
2026-07-08 KZR557 - Jul 8, 08:50 UTCJul 9, 05:05 UTC20h 15m
2026-07-08 KZR215 - Jul 8, 04:55 UTCJul 8, 07:20 UTC2h 25m
2026-07-07 KZR215 - Jul 7, 09:05 UTCJul 8, 07:20 UTC22h 15m
2026-07-07 KZR215 - Jul 7, 08:55 UTCJul 8, 07:00 UTC22h 5m
2026-07-07 KZR215 - Jul 7, 04:55 UTCJul 7, 07:20 UTC2h 25m
2026-07-06 KZR248 - Jul 6, 00:10 UTCJul 6, 00:40 UTC30m
2026-07-05 KZR248 - Jul 5, 20:00 UTCJul 5, 20:10 UTC10m
2026-07-05 KZR247 - Jul 5, 17:30 UTCJul 5, 17:50 UTC20m
2026-07-05 KZR247 - Jul 5, 13:55 UTCJul 5, 14:25 UTC30m
2026-07-04 KZR8226 - Jul 4, 07:55 UTCJul 4, 09:45 UTC1h 50m
2026-07-04 KZR8225 - Jul 4, 05:45 UTCJul 4, 06:10 UTC25m
2026-07-03 KZR592 - Jul 3, 11:05 UTCJul 4, 05:05 UTC18h 0m
2026-07-03 KZR592 - Jul 3, 10:50 UTCJul 4, 05:05 UTC18h 15m
2026-07-03 KZR591 - Jul 3, 05:55 UTCJul 3, 08:20 UTC2h 25m
2026-07-02 KZR591 - Jul 2, 11:05 UTCJul 3, 08:20 UTC21h 15m
2026-07-02 KZR591 - Jul 2, 10:45 UTCJul 3, 08:20 UTC21h 35m
2026-07-02 KZR345 - Jul 2, 08:50 UTCJul 2, 09:10 UTC20m
2026-07-01 KZR926 - Jul 1, 11:05 UTCJul 2, 09:10 UTC22h 5m
2026-07-01 KZR926 - Jul 1, 09:35 UTCJul 2, 09:00 UTC23h 25m
2026-07-01 KZR925 - Jul 1, 05:30 UTCJul 1, 08:05 UTC2h 35m
2026-06-30 KZR925 - Jun 30, 11:30 UTCJul 1, 08:05 UTC20h 35m
2026-06-30 KZR925 - Jun 30, 10:35 UTCJul 1, 08:05 UTC21h 30m
2026-06-30 KZR591 - Jun 30, 06:00 UTCJun 30, 08:35 UTC2h 35m
2026-06-29 KZR591 - Jun 29, 09:05 UTCJun 30, 08:35 UTC23h 31m
2026-06-28 KZR589 - Jun 28, 19:49 UTCJun 29, 07:05 UTC11h 15m
2026-06-28 KZR908 - Jun 28, 06:40 UTCJun 28, 18:25 UTC11h 45m
2026-06-27 KZR964 DEL → DEL Jun 27, 20:14 UTCJun 28, 05:04 UTC8h 50m
2026-06-27 KZR926 AYT → ALA Jun 27, 08:14 UTCJun 27, 18:39 UTC10h 25m
2026-06-27 KZR925 - Jun 27, 04:09 UTCJun 27, 06:40 UTC2h 30m
2026-06-26 KZR8238 - Jun 26, 02:40 UTCJun 26, 03:20 UTC40m
2026-06-25 KZR8237 - Jun 25, 07:09 UTCJun 26, 01:05 UTC17h 55m
2026-06-24 KZR964 DEL → DEL Jun 24, 20:14 UTCJun 25, 05:25 UTC9h 10m
2026-06-24 KZR963 - Jun 24, 17:40 UTCJun 24, 18:29 UTC50m
2026-06-23 KZR277 GUW → GYD Jun 23, 16:59 UTCJun 23, 20:24 UTC3h 25m

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-KDE page for operator, model, and routing details .

Mode-S 4CAC0C frequently asked

What is Mode-S code 4CAC0C?
4CAC0C is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-KDE.
Where is Mode-S 4CAC0C registered?
Mode-S code 4CAC0C is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC0C broadcasting right now?
No active broadcast right now. Last signal was 25m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC0C, octal 23126014, decimal 5,024,780.
What flights does 4CAC0C operate?
Mode-S 4CAC0C has broadcast 20 distinct callsigns, including KZR215, KZR925, KZR963, KZR907, KZR964.