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 12h ago
Flights observed
70
Distinct callsigns
20
Country
IE
Last broadcast
12h 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 Air Astana 17 2026-05-30
KZR216 Air Astana 5 2026-05-30
KZR964 Air Astana 4 2026-05-04
KZR963 Air Astana 4 2026-05-04
KZR907 Air Astana 4 2026-05-22
KZR917 Air Astana 3 2026-05-21
KZR908 Air Astana 3 2026-04-17
KZR589 - 3 2026-06-01
KZR569 - 3 2026-06-01
KZR558 Air Astana 3 2026-05-12
KZR557 - 3 2026-05-12
KZR139 Air Astana 3 2026-05-22
KZR291 Air Astana 2 2026-05-23
KZR227 Air Astana 2 2026-05-25
KZR225 Air Astana 2 2026-05-29
KZR984 Air Astana 1 2026-05-13
KZR918 Air Astana 1 2026-05-21
KZR562 Air Astana 1 2026-05-19
KZR313 Air Astana 1 2026-05-20
KZR292 Air Astana 1 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 KZR569 - Jun 1, 23:50 UTCJun 2, 10:35 UTC10h 45m
2026-06-01 KZR569 - Jun 1, 09:05 UTCJun 2, 09:00 UTC23h 55m
2026-06-01 KZR569 - Jun 1, 08:50 UTCJun 2, 03:05 UTC18h 15m
2026-06-01 KZR589 - Jun 1, 04:45 UTCJun 1, 06:30 UTC1h 45m
2026-05-31 KZR589 - May 31, 09:05 UTCJun 1, 06:30 UTC21h 25m
2026-05-31 KZR589 - May 31, 08:45 UTCJun 1, 06:30 UTC21h 45m
2026-05-30 KZR216 AYT → NQZ May 30, 09:05 UTCMay 31, 09:00 UTC23h 55m
2026-05-30 KZR216 AYT → NQZ May 30, 08:45 UTCMay 30, 10:40 UTC1h 55m
2026-05-30 KZR215 NQZ → AYT May 30, 07:05 UTCMay 30, 07:25 UTC20m
2026-05-29 KZR215 NQZ → AYT May 29, 11:05 UTCMay 30, 06:25 UTC19h 20m
2026-05-29 KZR226 AYT → NQZ May 29, 10:00 UTCMay 30, 06:25 UTC20h 25m
2026-05-29 KZR225 NQZ → AYT May 29, 06:00 UTCMay 29, 06:15 UTC15m
2026-05-29 KZR225 NQZ → AYT May 29, 04:35 UTCMay 29, 05:20 UTC45m
2026-05-25 KZR228 PEK → NQZ May 25, 20:15 UTCMay 26, 01:20 UTC5h 5m
2026-05-25 KZR227 NQZ → PEK May 25, 18:05 UTCMay 25, 18:25 UTC20m
2026-05-25 KZR227 NQZ → PEK May 25, 14:30 UTCMay 25, 15:00 UTC30m
2026-05-24 KZR292 BOM → ALA May 24, 00:50 UTCMay 24, 02:45 UTC1h 55m
2026-05-23 KZR291 ALA → BOM May 23, 07:40 UTCMay 23, 23:10 UTC15h 30m
2026-05-22 KZR907 ALA → DEL May 22, 18:40 UTCMay 23, 05:15 UTC10h 34m
2026-05-22 KZR139 ALA → TBS May 22, 16:55 UTCMay 22, 17:10 UTC15m
2026-05-21 KZR918 IST → NQZ May 21, 09:20 UTCMay 21, 11:30 UTC2h 10m
2026-05-21 KZR917 NQZ → IST May 21, 07:00 UTCMay 21, 07:10 UTC10m
2026-05-20 KZR917 NQZ → IST May 20, 18:20 UTCMay 21, 06:15 UTC11h 55m
2026-05-20 KZR313 NQZ → SCO May 20, 16:35 UTCMay 20, 16:50 UTC15m
2026-05-19 KZR562 JED → NQZ May 19, 00:40 UTCMay 19, 12:15 UTC11h 35m
2026-05-17 KZR216 AYT → NQZ May 17, 08:55 UTCMay 17, 11:25 UTC2h 30m
2026-05-17 KZR215 NQZ → AYT May 17, 04:30 UTCMay 17, 07:25 UTC2h 55m
2026-05-16 KZR215 NQZ → AYT May 16, 11:11 UTCMay 17, 07:25 UTC20h 15m
2026-05-16 KZR215 NQZ → AYT May 16, 09:40 UTCMay 17, 07:25 UTC21h 45m
2026-05-16 KZR215 NQZ → AYT May 16, 08:41 UTCMay 17, 07:00 UTC22h 20m
2026-05-16 KZR215 NQZ → AYT May 16, 06:55 UTCMay 16, 07:16 UTC20m
2026-05-15 KZR215 NQZ → AYT May 15, 11:10 UTCMay 16, 06:01 UTC18h 50m
2026-05-15 KZR215 NQZ → AYT May 15, 10:05 UTCMay 16, 06:01 UTC19h 55m
2026-05-15 KZR215 NQZ → AYT May 15, 07:45 UTCMay 15, 08:05 UTC20m
2026-05-15 KZR215 NQZ → AYT May 15, 05:50 UTCMay 15, 06:45 UTC55m
2026-05-13 KZR984 GUW → NQZ May 13, 19:05 UTCMay 13, 19:15 UTC10m
2026-05-13 KZR216 AYT → NQZ May 13, 08:45 UTCMay 13, 11:15 UTC2h 30m
2026-05-13 KZR215 NQZ → AYT May 13, 06:55 UTCMay 13, 07:15 UTC20m
2026-05-12 KZR558 SSH → NQZ May 12, 11:05 UTCMay 13, 06:10 UTC19h 5m
2026-05-12 KZR558 SSH → NQZ May 12, 10:20 UTCMay 13, 06:10 UTC19h 50m
2026-05-12 KZR558 SSH → NQZ May 12, 07:05 UTCMay 13, 06:10 UTC23h 5m
2026-05-12 KZR557 - May 12, 04:20 UTCMay 12, 13:30 UTC9h 10m
2026-05-11 KZR557 - May 11, 11:05 UTCMay 12, 11:00 UTC23h 56m
2026-05-11 KZR557 - May 11, 09:10 UTCMay 12, 07:25 UTC22h 15m
2026-05-11 KZR215 NQZ → AYT May 11, 07:05 UTCMay 11, 07:25 UTC20m
2026-05-10 KZR215 NQZ → AYT May 10, 11:05 UTCMay 11, 06:20 UTC19h 15m
2026-05-10 KZR215 NQZ → AYT May 10, 10:05 UTCMay 11, 06:20 UTC20h 15m
2026-05-10 KZR917 NQZ → IST May 10, 05:04 UTCMay 11, 04:40 UTC23h 35m
2026-05-09 KZR216 AYT → NQZ May 9, 08:40 UTCMay 9, 10:40 UTC2h 0m
2026-05-09 KZR215 NQZ → AYT May 9, 06:50 UTCMay 9, 07:10 UTC20m

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 12h 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, KZR216, KZR964, KZR963, KZR907.