Apparatus

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sensors Mode-S transponder

4CAC0E

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-KEB · BOEING 767-300

Hex
4CAC0E
Octal
23126016
Decimal
5,024,782
Country
IE
Tail
EI-KEB
Type
B763
Broadcasting now · callsign KZR921 · 9,450 ft
Flights observed
230
Distinct callsigns
10
Country
IE
Last broadcast
Jul 26, 19:15 UTC

Current position

4CAC0E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAC0E 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 10 distinct

Callsign Airline Flights Last seen
KZR921 Air Astana 51 2026-07-26
KZR915 - 45 2026-07-21
KZR564 Air Astana 32 2026-05-16
KZR909 Air Astana 31 2026-07-20
KZR910 - 23 2026-07-20
KZR916 Air Astana 17 2026-07-21
KZR563 Air Astana 15 2026-05-16
KZR604 Air Astana 7 2026-05-13
KZR603 Air Astana 5 2026-05-13
KZR922 - 3 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KZR922 - Jul 26, 17:00 UTCJul 26, 19:15 UTC2h 15m
2026-07-26 KZR921 NQZ → FRA Jul 26, 10:05 UTCJul 26, 14:50 UTC4h 45m
2026-07-25 KZR921 NQZ → FRA Jul 25, 17:35 UTCJul 26, 14:50 UTC21h 16m
2026-07-25 KZR921 NQZ → FRA Jul 25, 16:50 UTCJul 26, 14:50 UTC22h 1m
2026-07-25 KZR921 NQZ → FRA Jul 25, 10:00 UTCJul 25, 14:35 UTC4h 35m
2026-07-24 KZR921 NQZ → FRA Jul 24, 17:35 UTCJul 25, 14:35 UTC21h 0m
2026-07-24 KZR921 NQZ → FRA Jul 24, 16:50 UTCJul 25, 14:35 UTC21h 45m
2026-07-23 KZR921 - Jul 23, 19:35 UTCJul 24, 14:35 UTC19h 0m
2026-07-23 KZR921 FRA → FRA Jul 23, 17:40 UTCJul 24, 14:35 UTC20h 55m
2026-07-22 KZR921 - Jul 22, 20:00 UTCJul 23, 15:00 UTC19h 0m
2026-07-22 KZR921 - Jul 22, 17:35 UTCJul 23, 15:00 UTC21h 25m
2026-07-22 KZR921 FRA → FRA Jul 22, 16:55 UTCJul 23, 15:00 UTC22h 5m
2026-07-22 KZR921 - Jul 22, 11:10 UTCJul 22, 14:55 UTC3h 45m
2026-07-21 KZR916 AYT → ALA Jul 21, 11:35 UTCJul 22, 11:30 UTC23h 55m
2026-07-21 KZR916 AYT → ALA Jul 21, 11:25 UTCJul 21, 13:10 UTC1h 45m
2026-07-21 KZR915 - Jul 21, 07:10 UTCJul 21, 09:40 UTC2h 30m
2026-07-20 KZR910 - Jul 20, 03:45 UTCJul 20, 04:10 UTC25m
2026-07-20 KZR910 - Jul 20, 02:40 UTCJul 20, 03:00 UTC20m
2026-07-20 KZR909 ALA → ICN Jul 20, 00:20 UTCJul 20, 00:50 UTC30m
2026-07-19 KZR916 AYT → ALA Jul 19, 11:00 UTCJul 19, 23:35 UTC12h 35m
2026-07-19 KZR915 - Jul 19, 09:00 UTCJul 19, 09:30 UTC30m
2026-07-19 KZR915 - Jul 19, 07:00 UTCJul 19, 08:25 UTC1h 25m
2026-07-18 KZR915 - Jul 18, 11:35 UTCJul 19, 08:25 UTC20h 50m
2026-07-18 KZR915 - Jul 18, 11:20 UTCJul 19, 08:25 UTC21h 5m
2026-07-18 KZR915 - Jul 18, 07:15 UTCJul 18, 09:45 UTC2h 30m
2026-07-17 KZR915 - Jul 17, 11:35 UTCJul 18, 09:45 UTC22h 11m
2026-07-17 KZR915 - Jul 17, 11:10 UTCJul 18, 09:30 UTC22h 21m
2026-07-17 KZR915 - Jul 17, 07:14 UTCJul 17, 09:40 UTC2h 25m
2026-07-16 KZR910 - Jul 16, 02:50 UTCJul 16, 04:20 UTC1h 30m
2026-07-16 KZR909 - Jul 16, 00:10 UTCJul 16, 00:30 UTC20m
2026-07-15 KZR909 - Jul 15, 23:00 UTCJul 15, 23:25 UTC25m
2026-07-14 KZR922 - Jul 14, 17:40 UTCJul 14, 21:25 UTC3h 45m
2026-07-13 KZR921 - Jul 13, 20:40 UTCJul 14, 14:55 UTC18h 15m
2026-07-13 KZR921 - Jul 13, 17:35 UTCJul 14, 14:55 UTC21h 20m
2026-07-13 KZR921 FRA → FRA Jul 13, 16:55 UTCJul 14, 14:55 UTC22h 0m
2026-07-13 KZR921 - Jul 13, 10:05 UTCJul 13, 14:45 UTC4h 40m
2026-07-12 KZR921 - Jul 12, 17:35 UTCJul 13, 14:45 UTC21h 10m
2026-07-12 KZR921 FRA → FRA Jul 12, 16:55 UTCJul 13, 14:45 UTC21h 50m
2026-07-12 KZR921 - Jul 12, 10:01 UTCJul 12, 14:45 UTC4h 45m
2026-07-11 KZR921 - Jul 11, 17:35 UTCJul 12, 14:45 UTC21h 10m
2026-07-11 KZR921 FRA → FRA Jul 11, 17:10 UTCJul 12, 14:45 UTC21h 35m
2026-07-11 KZR921 - Jul 11, 10:05 UTCJul 11, 14:50 UTC4h 45m
2026-07-10 KZR921 - Jul 10, 17:35 UTCJul 11, 14:50 UTC21h 15m
2026-07-10 KZR921 FRA → FRA Jul 10, 17:10 UTCJul 11, 14:50 UTC21h 41m
2026-07-10 KZR921 - Jul 10, 10:10 UTCJul 10, 15:00 UTC4h 50m
2026-07-09 KZR921 - Jul 9, 17:35 UTCJul 10, 15:00 UTC21h 25m
2026-07-09 KZR921 FRA → FRA Jul 9, 16:50 UTCJul 10, 15:00 UTC22h 10m
2026-07-08 KZR921 - Jul 8, 20:35 UTCJul 9, 14:55 UTC18h 20m
2026-07-08 KZR921 - Jul 8, 17:35 UTCJul 9, 14:55 UTC21h 20m
2026-07-08 KZR921 FRA → FRA Jul 8, 17:05 UTCJul 9, 14:55 UTC21h 50m

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

Mode-S 4CAC0E frequently asked

What is Mode-S code 4CAC0E?
4CAC0E is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-KEB.
Where is Mode-S 4CAC0E registered?
Mode-S code 4CAC0E is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC0E broadcasting right now?
Yes. Mode-S 4CAC0E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC0E, octal 23126016, decimal 5,024,782.
What flights does 4CAC0E operate?
Mode-S 4CAC0E has broadcast 10 distinct callsigns, including KZR921, KZR915, KZR564, KZR909, KZR910.