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sensors Mode-S transponder

4CA4EF

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DPK · BOEING 737-800

Hex
4CA4EF
Octal
23122357
Decimal
5,022,959
Country
IE
Tail
EI-DPK
Type
B738
Broadcasting now · callsign RYR67XW · 700 ft
Flights observed
651
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 21:05 UTC

Current position

4CA4EF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA4EF 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
RYR7SH Ryanair 5 2026-05-23
RYR74XH Ryanair 5 2026-05-27
RYR50XY - 5 2026-05-23
RYR41NU Ryanair 5 2026-05-27
RYR91CA - 4 2026-06-21
RYR8FP Ryanair 4 2026-05-09
RYR89TL Ryanair 4 2026-05-28
RYR68AB Ryanair 4 2026-05-28
RYR47FQ Ryanair 4 2026-06-21
RYR142H Ryanair 4 2026-05-09
RYR70PH - 3 2026-07-05
RYR69QT Ryanair 3 2026-05-24
RYR62LK Ryanair 3 2026-06-03
RYR59WU Ryanair 3 2026-05-22
RYR43JJ Ryanair 3 2026-05-22
RYR4239 Ryanair 3 2026-07-26
RYR39YC Ryanair 3 2026-05-24
RYR35NU Ryanair 3 2026-05-28
RYR2NN - 3 2026-07-05
RYR9VP Ryanair 2 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR4239 TLS → PMI Jul 26, 20:10 UTCJul 26, 21:05 UTC55m
2026-07-26 RYR6JJ RIX → AGP Jul 26, 16:10 UTCJul 26, 18:00 UTC1h 50m
2026-07-26 RYR4FP STN → FUE Jul 26, 13:05 UTCJul 26, 15:00 UTC1h 55m
2026-07-26 RYR90FN MLA → TLS Jul 26, 09:25 UTCJul 26, 11:25 UTC2h 0m
2026-07-26 RYR67RW TLS → MLA Jul 26, 06:30 UTCJul 26, 08:20 UTC1h 51m
2026-07-25 RYR72EU MAH → TLS Jul 25, 20:20 UTCJul 25, 21:10 UTC50m
2026-07-25 RYR7597 TLS → MAH Jul 25, 18:35 UTCJul 25, 19:30 UTC55m
2026-07-25 RYR34HL CRL → TLS Jul 25, 16:40 UTCJul 25, 17:55 UTC1h 15m
2026-07-25 RYR26LU TLS → CRL Jul 25, 14:10 UTCJul 25, 15:25 UTC1h 15m
2026-07-25 RYR2198 TNG → TLS Jul 25, 10:55 UTCJul 25, 12:15 UTC1h 20m
2026-07-25 RYR9BY KRK → BOH Jul 25, 08:10 UTCJul 25, 09:55 UTC1h 45m
2026-07-25 RYR13DX SUF → MAD Jul 25, 06:10 UTCJul 25, 07:20 UTC1h 10m
2026-07-25 RYR64SP VLC → DUB Jul 25, 04:15 UTCJul 25, 05:20 UTC1h 5m
2026-07-24 RYR693D LIS → TLS Jul 24, 20:05 UTCJul 24, 21:25 UTC1h 20m
2026-07-24 RYR32KG TLS → LIS Jul 24, 17:15 UTCJul 24, 19:00 UTC1h 45m
2026-07-24 RYR3631 TSF → TLS Jul 24, 15:00 UTCJul 24, 16:20 UTC1h 20m
2026-07-24 RYR16EA TLS → TSF Jul 24, 12:45 UTCJul 24, 14:05 UTC1h 20m
2026-07-24 RYR73LC TLS → TLS Jul 24, 06:00 UTCJul 24, 11:35 UTC5h 35m
2026-07-23 RYR9EN BVA → MAD Jul 23, 20:20 UTCJul 23, 21:10 UTC50m
2026-07-23 RYR4239 TLS → PMI Jul 23, 18:45 UTCJul 23, 19:25 UTC40m
2026-07-23 RYR693D LIS → TLS Jul 23, 16:40 UTCJul 23, 18:00 UTC1h 20m
2026-07-23 RYR32KG TLS → LIS Jul 23, 13:40 UTCJul 23, 15:40 UTC2h 0m
2026-07-23 RYR2XG - Jul 23, 10:25 UTCJul 23, 11:50 UTC1h 25m
2026-07-23 RYR8NP PFO → MAN Jul 23, 08:00 UTCJul 23, 09:35 UTC1h 35m
2026-07-23 RYR72EU MAH → TLS Jul 23, 06:00 UTCJul 23, 07:00 UTC1h 0m
2026-07-23 RYR7597 TLS → MAH Jul 23, 04:15 UTCJul 23, 05:00 UTC45m
2026-07-22 RYR9EN BVA → MAD Jul 22, 20:35 UTCJul 22, 21:25 UTC50m
2026-07-22 RYR4239 - Jul 22, 18:45 UTCJul 22, 19:30 UTC45m
2026-07-22 RYR247N CFU → TLS Jul 22, 15:45 UTCJul 22, 18:00 UTC2h 15m
2026-07-22 RYR67RC TLS → CFU Jul 22, 12:25 UTCJul 22, 14:20 UTC1h 55m
2026-07-22 RYR29UF BER → MAN Jul 22, 04:15 UTCJul 22, 05:05 UTC50m
2026-07-21 RYR96SP DUB → BGY Jul 21, 19:05 UTCJul 21, 20:35 UTC1h 30m
2026-07-21 RYR2VB BHX → DUB Jul 21, 16:20 UTCJul 21, 18:00 UTC1h 40m
2026-07-21 RYR58JY NAP → TLS Jul 21, 13:50 UTCJul 21, 15:35 UTC1h 45m
2026-07-21 RYR4AD STN → FMM Jul 21, 11:10 UTCJul 21, 12:30 UTC1h 20m
2026-07-21 RYR4FP STN → FUE Jul 21, 04:35 UTCJul 21, 09:45 UTC5h 10m
2026-07-20 RYR829U KRK → TLS Jul 20, 19:05 UTCJul 20, 21:25 UTC2h 20m
2026-07-20 RYR523V - Jul 20, 16:15 UTCJul 20, 18:15 UTC2h 0m
2026-07-20 RYR9B BRI → TLS Jul 20, 13:05 UTCJul 20, 15:10 UTC2h 5m
2026-07-20 RYR2007 CGN → WMI Jul 20, 10:30 UTCJul 20, 12:10 UTC1h 40m
2026-07-20 RYR784B OUD → TLS Jul 20, 07:45 UTCJul 20, 09:10 UTC1h 25m
2026-07-20 RYR1994 TLS → OUD Jul 20, 05:05 UTCJul 20, 06:35 UTC1h 30m
2026-07-19 RYR5TY STN → WMI Jul 19, 19:45 UTCJul 19, 21:15 UTC1h 30m
2026-07-19 RYR4RZ WRO → BGY Jul 19, 17:15 UTCJul 19, 18:50 UTC1h 35m
2026-07-19 RYR3838 MAN → TLS Jul 19, 15:00 UTCJul 19, 16:35 UTC1h 35m
2026-07-19 RYR3839 TLS → MAN Jul 19, 12:20 UTCJul 19, 14:05 UTC1h 45m
2026-07-19 RYR20SB TLS → RAK Jul 19, 04:30 UTCJul 19, 09:30 UTC5h 0m
2026-07-18 RYR96SP FAO → TLS Jul 18, 18:25 UTCJul 18, 19:50 UTC1h 25m
2026-07-18 RYR5486 OPO → FAO Jul 18, 16:45 UTCJul 18, 17:40 UTC55m
2026-07-18 RYR275J FAO → OPO Jul 18, 15:05 UTCJul 18, 15:45 UTC40m

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

Mode-S 4CA4EF frequently asked

What is Mode-S code 4CA4EF?
4CA4EF is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DPK.
Where is Mode-S 4CA4EF registered?
Mode-S code 4CA4EF is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA4EF broadcasting right now?
Yes. Mode-S 4CA4EF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA4EF, octal 23122357, decimal 5,022,959.
What flights does 4CA4EF operate?
Mode-S 4CA4EF has broadcast 20 distinct callsigns, including RYR7SH, RYR74XH, RYR50XY, RYR41NU, RYR91CA.