Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CAC0A

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAC0A
Octal
23126012
Decimal
5,024,778
Country
IE
Tail
EI-KDC
Type
A21N
No current signal · last broadcast 15h ago
Flights observed
60
Distinct callsigns
20
Country
IE
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 4CAC0A.

Country allocation

The ICAO 24-bit address 4CAC0A 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 10 2026-05-29
KZR557 - 6 2026-05-26
KZR963 Air Astana 5 2026-05-23
KZR964 Air Astana 4 2026-05-23
KZR915 Air Astana 4 2026-05-18
KZR916 Air Astana 3 2026-05-18
KZR907 Air Astana 3 2026-04-18
KZR570 Air Astana 3 2026-05-19
KZR558 Air Astana 3 2026-05-26
KZR216 Air Astana 3 2026-05-29
KZR139 Air Astana 3 2026-05-06
KZR859 Air Astana 2 2026-05-13
KZR140 Air Astana 2 2026-05-06
KZR908 Air Astana 1 2026-04-18
KZR870 Air Astana 1 2026-05-12
KZR869 Air Astana 1 2026-05-12
KZR860 Air Astana 1 2026-05-13
KZR693 Air Astana 1 2026-05-18
KZR278 Air Astana 1 2026-05-12
KZR277 Air Astana 1 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 KZR263 ALA → MED Jun 1, 20:05 UTCJun 2, 06:35 UTC10h 30m
2026-05-31 KZR226 AYT → NQZ May 31, 09:40 UTCMay 31, 11:35 UTC1h 55m
2026-05-29 KZR216 AYT → NQZ May 29, 08:45 UTCMay 29, 10:45 UTC2h 0m
2026-05-29 KZR215 NQZ → AYT May 29, 05:15 UTCMay 29, 07:20 UTC2h 5m
2026-05-28 KZR215 NQZ → AYT May 28, 10:35 UTCMay 29, 07:20 UTC20h 45m
2026-05-28 KZR216 AYT → NQZ May 28, 09:15 UTCMay 29, 07:20 UTC22h 5m
2026-05-28 KZR215 NQZ → AYT May 28, 05:35 UTCMay 28, 07:55 UTC2h 20m
2026-05-26 KZR558 SSH → NQZ May 26, 09:35 UTCMay 26, 12:45 UTC3h 10m
2026-05-26 KZR557 - May 26, 04:20 UTCMay 26, 07:34 UTC3h 15m
2026-05-25 KZR557 - May 25, 10:35 UTCMay 26, 07:34 UTC21h 0m
2026-05-25 KZR557 - May 25, 08:40 UTCMay 26, 07:34 UTC22h 54m
2026-05-25 KZR215 NQZ → AYT May 25, 04:55 UTCMay 25, 07:10 UTC2h 15m
2026-05-24 KZR215 NQZ → AYT May 24, 06:35 UTCMay 25, 06:10 UTC23h 35m
2026-05-23 KZR964 DEL → ALA May 23, 20:10 UTCMay 24, 05:00 UTC8h 50m
2026-05-23 KZR963 ALA → DEL May 23, 17:50 UTCMay 23, 18:35 UTC45m
2026-05-20 KZR964 DEL → ALA May 20, 20:15 UTCMay 20, 20:50 UTC35m
2026-05-20 KZR963 ALA → DEL May 20, 17:55 UTCMay 20, 18:45 UTC50m
2026-05-19 KZR570 JED → ALA May 19, 20:35 UTCMay 20, 18:45 UTC22h 11m
2026-05-19 KZR570 JED → ALA May 19, 19:35 UTCMay 20, 18:30 UTC22h 56m
2026-05-19 KZR570 JED → ALA May 19, 11:45 UTCMay 19, 22:25 UTC10h 40m
2026-05-18 KZR693 SCO → JED May 18, 12:35 UTCMay 19, 12:20 UTC23h 44m
2026-05-18 KZR916 AYT → ALA May 18, 10:55 UTCMay 18, 12:50 UTC1h 55m
2026-05-18 KZR915 ALA → AYT May 18, 07:10 UTCMay 18, 09:25 UTC2h 15m
2026-05-13 KZR860 SCO → ALA May 13, 23:50 UTCMay 14, 00:00 UTC10m
2026-05-13 KZR859 ALA → SCO May 13, 21:50 UTCMay 13, 22:00 UTC10m
2026-05-12 KZR278 GYD → GUW May 12, 20:35 UTCMay 12, 21:25 UTC50m
2026-05-12 KZR277 GUW → GYD May 12, 18:00 UTCMay 12, 18:40 UTC40m
2026-05-12 KZR870 IST → GUW May 12, 11:40 UTCMay 12, 13:55 UTC2h 15m
2026-05-12 KZR869 GUW → IST May 12, 06:45 UTCMay 12, 07:15 UTC30m
2026-05-10 KZR859 ALA → SCO May 10, 18:29 UTCMay 10, 18:39 UTC10m
2026-05-08 KZR916 AYT → ALA May 8, 10:59 UTCMay 8, 13:00 UTC2h 0m
2026-05-08 KZR915 ALA → AYT May 8, 09:09 UTCMay 8, 09:30 UTC20m
2026-05-08 KZR915 ALA → AYT May 8, 07:39 UTCMay 8, 08:24 UTC45m
2026-05-06 KZR140 TBS → ALA May 6, 18:35 UTCMay 6, 19:05 UTC30m
2026-05-06 KZR139 ALA → TBS May 6, 16:50 UTCMay 6, 17:25 UTC35m
2026-05-05 KZR139 ALA → TBS May 5, 20:35 UTCMay 6, 17:25 UTC20h 50m
2026-05-05 KZR964 DEL → ALA May 5, 20:20 UTCMay 6, 17:25 UTC21h 5m
2026-05-05 KZR963 ALA → DEL May 5, 17:40 UTCMay 5, 18:35 UTC55m
2026-04-29 KZR216 AYT → NQZ Apr 29, 08:55 UTCApr 29, 10:50 UTC1h 56m
2026-04-29 KZR215 NQZ → AYT Apr 29, 06:59 UTCApr 29, 07:15 UTC15m
2026-04-29 KZR215 NQZ → AYT Apr 29, 05:09 UTCApr 29, 06:15 UTC1h 5m
2026-04-28 KZR215 NQZ → AYT Apr 28, 08:50 UTCApr 29, 06:15 UTC21h 25m
2026-04-28 KZR215 NQZ → AYT Apr 28, 07:10 UTCApr 28, 07:30 UTC20m
2026-04-28 KZR215 NQZ → AYT Apr 28, 05:20 UTCApr 28, 06:25 UTC1h 5m
2026-04-23 KZR140 TBS → ALA Apr 23, 18:30 UTCApr 23, 19:00 UTC30m
2026-04-23 KZR139 ALA → TBS Apr 23, 16:40 UTCApr 23, 17:10 UTC30m
2026-04-21 KZR916 AYT → ALA Apr 21, 11:10 UTCApr 21, 13:10 UTC2h 0m
2026-04-21 KZR915 ALA → AYT Apr 21, 07:10 UTCApr 21, 09:30 UTC2h 20m
2026-04-19 KZR964 DEL → ALA Apr 19, 20:10 UTCApr 19, 20:45 UTC35m
2026-04-19 KZR963 ALA → DEL Apr 19, 06:25 UTCApr 19, 18:25 UTC12h 0m

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

Mode-S 4CAC0A frequently asked

What is Mode-S code 4CAC0A?
4CAC0A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-KDC.
Where is Mode-S 4CAC0A registered?
Mode-S code 4CAC0A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC0A broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC0A, octal 23126012, decimal 5,024,778.
What flights does 4CAC0A operate?
Mode-S 4CAC0A has broadcast 20 distinct callsigns, including KZR215, KZR557, KZR963, KZR964, KZR915.