Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CAC0F

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-KEC · BOEING 767-300

Hex
4CAC0F
Octal
23126017
Decimal
5,024,783
Country
IE
Tail
EI-KEC
Type
B763
No current signal · last broadcast 1d ago
Flights observed
53
Distinct callsigns
8
Country
IE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4CAC0F.

Country allocation

The ICAO 24-bit address 4CAC0F 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 8 distinct

Callsign Airline Flights Last seen
KZR564 Air Astana 26 2026-05-08
KZR563 Air Astana 13 2026-05-03
KZR915 Air Astana 4 2026-05-28
KZR604 Air Astana 3 2026-05-07
KZR603 Air Astana 3 2026-05-06
KZR909 Air Astana 2 2026-05-02
KZR916 Air Astana 1 2026-05-28
KZR188 Air Astana 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 KZR916 AYT → ALA May 28, 11:30 UTCMay 28, 13:30 UTC2h 0m
2026-05-28 KZR915 ALA → AYT May 28, 07:15 UTCMay 28, 09:35 UTC2h 20m
2026-05-27 KZR915 ALA → AYT May 27, 11:50 UTCMay 28, 09:35 UTC21h 45m
2026-05-27 KZR915 ALA → AYT May 27, 10:55 UTCMay 28, 09:35 UTC22h 40m
2026-05-27 KZR915 ALA → AYT May 27, 07:35 UTCMay 27, 09:30 UTC1h 55m
2026-05-08 KZR564 HKT → ALA May 8, 23:00 UTCMay 9, 09:55 UTC10h 55m
2026-05-07 KZR604 HKT → ALA May 7, 05:20 UTCMay 7, 07:55 UTC2h 35m
2026-05-06 KZR603 ALA → HKT May 6, 19:40 UTCMay 6, 21:55 UTC2h 15m
2026-05-03 KZR563 ALA → HKT May 3, 21:50 UTCMay 4, 08:25 UTC10h 35m
2026-05-03 KZR563 ALA → HKT May 3, 07:50 UTCMay 4, 07:45 UTC23h 55m
2026-05-03 KZR564 HKT → ALA May 3, 05:50 UTCMay 4, 00:45 UTC18h 55m
2026-05-03 KZR564 HKT → ALA May 3, 04:10 UTCMay 4, 00:45 UTC20h 35m
2026-05-02 KZR564 HKT → ALA May 2, 23:50 UTCMay 3, 23:45 UTC23h 54m
2026-05-02 KZR564 HKT → ALA May 2, 21:40 UTCMay 3, 08:35 UTC10h 54m
2026-05-02 KZR563 ALA → HKT May 2, 04:15 UTCMay 3, 01:30 UTC21h 15m
2026-05-02 KZR563 ALA → HKT May 2, 02:50 UTCMay 3, 01:30 UTC22h 40m
2026-05-02 KZR909 ALA → ICN May 2, 00:25 UTCMay 2, 00:40 UTC15m
2026-05-01 KZR909 ALA → ICN May 1, 23:10 UTCMay 1, 23:30 UTC20m
2026-04-28 KZR564 HKT → ALA Apr 28, 21:40 UTCApr 29, 08:25 UTC10h 45m
2026-04-28 KZR564 HKT → ALA Apr 28, 09:50 UTCApr 29, 08:25 UTC22h 35m
2026-04-28 KZR564 HKT → ALA Apr 28, 07:50 UTCApr 29, 07:40 UTC23h 50m
2026-04-28 KZR564 HKT → ALA Apr 28, 07:25 UTCApr 29, 05:45 UTC22h 20m
2026-04-27 KZR563 ALA → HKT Apr 27, 23:50 UTCApr 28, 23:45 UTC23h 55m
2026-04-27 KZR564 HKT → ALA Apr 27, 22:20 UTCApr 28, 21:45 UTC23h 25m
2026-04-27 KZR563 ALA → HKT Apr 27, 07:50 UTCApr 28, 07:45 UTC23h 55m
2026-04-27 KZR564 HKT → ALA Apr 27, 05:50 UTCApr 28, 00:40 UTC18h 50m
2026-04-27 KZR564 HKT → ALA Apr 27, 05:35 UTCApr 28, 00:40 UTC19h 5m
2026-04-26 KZR564 HKT → ALA Apr 26, 23:50 UTCApr 27, 23:30 UTC23h 40m
2026-04-26 KZR564 HKT → ALA Apr 26, 21:40 UTCApr 27, 08:15 UTC10h 35m
2026-04-26 KZR564 HKT → ALA Apr 26, 07:50 UTCApr 27, 07:45 UTC23h 55m
2026-04-26 KZR564 HKT → ALA Apr 26, 05:55 UTCApr 27, 05:45 UTC23h 50m
2026-04-25 KZR563 ALA → HKT Apr 25, 23:50 UTCApr 26, 23:45 UTC23h 55m
2026-04-25 KZR564 HKT → ALA Apr 25, 22:15 UTCApr 26, 21:45 UTC23h 30m
2026-04-23 KZR563 ALA → HKT Apr 23, 21:40 UTCApr 24, 08:25 UTC10h 45m
2026-04-21 KZR563 ALA → HKT Apr 21, 21:35 UTCApr 22, 08:15 UTC10h 40m
2026-04-20 KZR188 CAN → ALA Apr 20, 23:25 UTCApr 20, 23:35 UTC10m
2026-04-18 KZR564 HKT → ALA Apr 18, 07:25 UTCApr 18, 09:20 UTC1h 55m
2026-04-17 KZR563 ALA → HKT Apr 17, 23:30 UTCApr 18, 00:55 UTC1h 25m
2026-04-17 KZR564 HKT → ALA Apr 17, 22:50 UTCApr 18, 09:50 UTC11h 0m
2026-04-17 KZR564 HKT → ALA Apr 17, 07:20 UTCApr 17, 08:30 UTC1h 10m
2026-04-17 KZR564 HKT → ALA Apr 17, 05:55 UTCApr 17, 07:15 UTC1h 20m
2026-04-16 KZR563 ALA → HKT Apr 16, 23:20 UTCApr 17, 00:00 UTC40m
2026-04-16 KZR563 ALA → HKT Apr 16, 21:39 UTCApr 16, 23:00 UTC1h 20m
2026-04-16 KZR604 HKT → ALA Apr 16, 07:09 UTCApr 16, 08:15 UTC1h 5m
2026-04-16 KZR604 HKT → ALA Apr 16, 05:29 UTCApr 16, 07:05 UTC1h 35m
2026-04-15 KZR603 - Apr 15, 21:05 UTCApr 15, 22:20 UTC1h 15m
2026-04-15 KZR603 - Apr 15, 20:00 UTCApr 15, 21:00 UTC1h 0m
2026-04-14 KZR564 HKT → ALA Apr 14, 09:10 UTCApr 14, 10:20 UTC1h 10m
2026-04-14 KZR564 HKT → ALA Apr 14, 07:15 UTCApr 14, 09:05 UTC1h 50m
2026-04-13 KZR563 - Apr 13, 22:10 UTCApr 13, 23:40 UTC1h 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-KEC page for operator, model, and routing details .

Mode-S 4CAC0F frequently asked

What is Mode-S code 4CAC0F?
4CAC0F is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-KEC.
Where is Mode-S 4CAC0F registered?
Mode-S code 4CAC0F is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC0F broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC0F, octal 23126017, decimal 5,024,783.
What flights does 4CAC0F operate?
Mode-S 4CAC0F has broadcast 8 distinct callsigns, including KZR564, KZR563, KZR915, KZR604, KZR603.