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sensors Mode-S transponder

4CAEF6

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HOX

Hex
4CAEF6
Octal
23127366
Decimal
5,025,526
Country
IE
Tail
EI-HOX
Type
SD4
No current signal · last broadcast Jul 24, 22:15 UTC
Flights observed
97
Distinct callsigns
3
Country
IE
Last broadcast
Jul 24, 22:15 UTC

Last known position

Most recent position reported by Mode-S 4CAEF6.

Country allocation

The ICAO 24-bit address 4CAEF6 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 3 distinct

Callsign Airline Flights Last seen
EIHOX - 93 2026-07-22
RYR86MF Ryanair 1 2026-05-31
RYR28KJ Ryanair 1 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 - - Jul 24, 22:05 UTCJul 24, 22:15 UTC10m
2026-07-22 EIHOX - Jul 22, 14:30 UTCJul 22, 14:40 UTC10m
2026-07-21 - - Jul 21, 10:40 UTCJul 21, 10:50 UTC10m
2026-07-21 EIHOX - Jul 21, 09:45 UTCJul 21, 09:55 UTC10m
2026-07-20 EIHOX - Jul 20, 13:25 UTCJul 20, 14:00 UTC35m
2026-07-20 EIHOX - Jul 20, 12:35 UTCJul 20, 12:50 UTC15m
2026-07-20 EIHOX - Jul 20, 09:45 UTCJul 20, 11:10 UTC1h 25m
2026-07-17 EIHOX - Jul 17, 13:40 UTCJul 17, 14:20 UTC40m
2026-07-17 EIHOX - Jul 17, 12:19 UTCJul 17, 12:55 UTC35m
2026-07-16 EIHOX - Jul 16, 19:20 UTCJul 16, 20:05 UTC45m
2026-07-16 EIHOX - Jul 16, 15:25 UTCJul 16, 16:09 UTC45m
2026-07-16 EIHOX - Jul 16, 13:49 UTCJul 16, 14:20 UTC30m
2026-07-16 EIHOX - Jul 16, 08:15 UTCJul 16, 08:35 UTC20m
2026-07-15 EIHOX - Jul 15, 15:40 UTCJul 15, 16:05 UTC25m
2026-07-15 EIHOX - Jul 15, 14:15 UTCJul 15, 14:30 UTC15m
2026-07-13 EIHOX - Jul 13, 15:00 UTCJul 13, 15:10 UTC10m
2026-07-11 EIHOX - Jul 11, 15:15 UTCJul 11, 15:25 UTC10m
2026-07-11 EIHOX - Jul 11, 12:20 UTCJul 11, 12:45 UTC25m
2026-07-11 EIHOX - Jul 11, 06:50 UTCJul 11, 08:40 UTC1h 50m
2026-07-10 EIHOX - Jul 10, 17:00 UTCJul 10, 17:10 UTC10m
2026-07-09 EIHOX - Jul 9, 14:00 UTCJul 9, 14:25 UTC25m
2026-07-08 EIHOX - Jul 8, 17:00 UTCJul 8, 18:25 UTC1h 25m
2026-07-08 EIHOX - Jul 8, 14:10 UTCJul 8, 14:50 UTC40m
2026-07-08 EIHOX - Jul 8, 12:35 UTCJul 8, 12:50 UTC15m
2026-07-08 EIHOX - Jul 8, 10:45 UTCJul 8, 11:15 UTC30m
2026-07-07 EIHOX - Jul 7, 18:35 UTCJul 7, 19:10 UTC35m
2026-07-07 EIHOX - Jul 7, 17:15 UTCJul 7, 17:55 UTC40m
2026-07-07 EIHOX - Jul 7, 15:50 UTCJul 7, 16:35 UTC45m
2026-07-07 EIHOX - Jul 7, 14:15 UTCJul 7, 15:00 UTC45m
2026-07-07 EIHOX - Jul 7, 11:25 UTCJul 7, 12:45 UTC1h 20m
2026-07-06 EIHOX - Jul 6, 17:40 UTCJul 6, 18:20 UTC40m
2026-07-06 EIHOX - Jul 6, 15:45 UTCJul 6, 15:55 UTC10m
2026-07-06 EIHOX - Jul 6, 14:05 UTCJul 6, 14:35 UTC30m
2026-07-06 EIHOX - Jul 6, 11:20 UTCJul 6, 13:05 UTC1h 45m
2026-07-06 EIHOX - Jul 6, 09:25 UTCJul 6, 10:40 UTC1h 15m
2026-07-05 EIHOX - Jul 5, 11:25 UTCJul 5, 11:35 UTC10m
2026-06-29 EIHOX - Jun 29, 15:24 UTCJun 29, 15:45 UTC20m
2026-06-26 EIHOX - Jun 26, 09:59 UTCJun 26, 10:15 UTC15m
2026-06-22 EIHOX - Jun 22, 12:59 UTCJun 22, 13:10 UTC10m
2026-06-22 EIHOX - Jun 22, 11:35 UTCJun 22, 11:54 UTC20m
2026-06-22 EIHOX - Jun 22, 10:30 UTCJun 22, 10:44 UTC15m
2026-06-21 EIHOX - Jun 21, 09:49 UTCJun 21, 10:25 UTC35m
2026-06-21 EIHOX - Jun 21, 08:20 UTCJun 21, 08:54 UTC35m
2026-06-20 EIHOX - Jun 20, 13:44 UTCJun 20, 14:39 UTC55m
2026-06-20 EIHOX - Jun 20, 07:59 UTCJun 20, 08:34 UTC35m
2026-06-17 EIHOX - Jun 17, 14:05 UTCJun 17, 14:25 UTC20m
2026-06-16 EIHOX - Jun 16, 17:19 UTCJun 16, 19:25 UTC2h 5m
2026-06-16 EIHOX - Jun 16, 06:45 UTCJun 16, 07:40 UTC55m
2026-06-15 EIHOX - Jun 15, 15:10 UTCJun 15, 15:19 UTC10m
2026-06-14 EIHOX - Jun 14, 15:45 UTCJun 14, 16:05 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-HOX page for operator, model, and routing details .

Mode-S 4CAEF6 frequently asked

What is Mode-S code 4CAEF6?
4CAEF6 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HOX.
Where is Mode-S 4CAEF6 registered?
Mode-S code 4CAEF6 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEF6 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEF6, octal 23127366, decimal 5,025,526.
What flights does 4CAEF6 operate?
Mode-S 4CAEF6 has broadcast 3 distinct callsigns, including EIHOX, RYR86MF, RYR28KJ.