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sensors Mode-S transponder

4CA8DB

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-ENP · BOEING 737-800

Hex
4CA8DB
Octal
23124333
Decimal
5,023,963
Country
IE
Tail
EI-ENP
Type
B738
Broadcasting now · callsign RYR1YV · 37,000 ft
Flights observed
645
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:45 UTC

Current position

4CA8DB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA8DB 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
RYR95PT Ryanair 5 2026-06-17
RYR90QD Ryanair 4 2026-06-14
RYR63RY Ryanair 4 2026-06-16
RYR6199 Ryanair 4 2026-06-14
RYR22JQ Ryanair 4 2026-06-16
RYR9QJ Ryanair 3 2026-04-24
RYR87EZ - 3 2026-04-13
RYR86TK - 3 2026-04-15
RYR7SJ Ryanair 3 2026-04-20
RYR76NC Ryanair 3 2026-06-16
RYR6WC Ryanair 3 2026-04-21
RYR6BQ Ryanair 3 2026-04-21
RYR49HH Ryanair 3 2026-04-19
RYR40DY Ryanair 3 2026-04-19
RYR25PE Ryanair 3 2026-04-20
RYR9WA - 2 2026-07-13
RYR9ED Ryanair 2 2026-05-23
RYR99JY Ryanair 2 2026-06-16
RYR99GJ Ryanair 2 2026-07-25
RYR98ML - 2 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR1YJ TFS → MAN Jul 26, 21:45 UTCJul 26, 22:45 UTC1h 0m
2026-07-26 RYR50UT STN → LPA Jul 26, 19:25 UTCJul 26, 20:30 UTC1h 5m
2026-07-26 RYR44CH CTA → BGY Jul 26, 17:15 UTCJul 26, 18:45 UTC1h 30m
2026-07-26 RYR8WW EMA → DUB Jul 26, 14:35 UTCJul 26, 16:00 UTC1h 25m
2026-07-26 RYR3YU FAO → BER Jul 26, 11:20 UTCJul 26, 13:10 UTC1h 50m
2026-07-26 RYR2WZ WMI → LIS Jul 26, 08:45 UTCJul 26, 10:20 UTC1h 35m
2026-07-26 RYR61ED LUX → BGY Jul 26, 06:00 UTCJul 26, 06:50 UTC51m
2026-07-26 RYR6QU MLA → MAD Jul 26, 04:15 UTCJul 26, 05:05 UTC50m
2026-07-25 RYR87RR OLB → BGY Jul 25, 22:25 UTCJul 25, 23:10 UTC45m
2026-07-25 RYR99GJ BGY → OLB Jul 25, 20:45 UTCJul 25, 21:25 UTC40m
2026-07-25 RYR6857 VLC → BOD Jul 25, 17:50 UTCJul 25, 19:50 UTC2h 0m
2026-07-25 RYR73HD LUX → OPO Jul 25, 13:20 UTCJul 25, 15:10 UTC1h 50m
2026-07-25 RYR9AQ KTW → DUB Jul 25, 10:15 UTCJul 25, 12:20 UTC2h 5m
2026-07-25 RYR2KD CTA → MRS Jul 25, 08:00 UTCJul 25, 08:50 UTC50m
2026-07-25 RYR44JG OPO → SVQ Jul 25, 06:10 UTCJul 25, 07:05 UTC55m
2026-07-24 RYR61AP BRU → OPO Jul 24, 19:35 UTCJul 24, 21:40 UTC2h 5m
2026-07-24 RYR78FL OPO → BRU Jul 24, 16:30 UTCJul 24, 18:30 UTC2h 0m
2026-07-24 RYR4JM VCE → STN Jul 24, 14:20 UTCJul 24, 15:45 UTC1h 25m
2026-07-24 RYR526B OPO → TLS Jul 24, 12:20 UTCJul 24, 13:30 UTC1h 10m
2026-07-24 RYR11LH STN → OPO Jul 24, 09:00 UTCJul 24, 10:55 UTC1h 55m
2026-07-24 RYR7788 RAK → DUB Jul 24, 05:10 UTCJul 24, 06:55 UTC1h 45m
2026-07-23 RYR84GY PMI → FMO Jul 23, 20:20 UTCJul 23, 22:55 UTC2h 35m
2026-07-23 RYR145Q BGY → KGS Jul 23, 17:05 UTCJul 23, 19:20 UTC2h 15m
2026-07-23 RYR29CD TLS → CRL Jul 23, 14:40 UTCJul 23, 15:45 UTC1h 5m
2026-07-23 RYR439J BGY → AHO Jul 23, 12:40 UTCJul 23, 13:30 UTC50m
2026-07-23 RYR6855 - Jul 23, 08:10 UTCJul 23, 10:45 UTC2h 35m
2026-07-23 RYR6854 - Jul 23, 04:40 UTCJul 23, 07:15 UTC2h 35m
2026-07-22 RYR39HB POZ → BGY Jul 22, 23:10 UTCJul 23, 00:35 UTC1h 25m
2026-07-22 RYR59DZ BGY → POZ Jul 22, 21:00 UTCJul 22, 22:20 UTC1h 20m
2026-07-22 RYR328T TNG → BGY Jul 22, 17:15 UTCJul 22, 19:30 UTC2h 15m
2026-07-22 RYR1NA - Jul 22, 14:00 UTCJul 22, 16:20 UTC2h 20m
2026-07-22 RYR7GZ CGN → VIT Jul 22, 12:00 UTCJul 22, 12:50 UTC50m
2026-07-21 RYR18RQ LCJ → BGY Jul 21, 21:10 UTCJul 21, 22:40 UTC1h 30m
2026-07-21 RYR207V - Jul 21, 19:10 UTCJul 21, 20:30 UTC1h 20m
2026-07-21 RYR9GR - Jul 21, 16:55 UTCJul 21, 18:15 UTC1h 20m
2026-07-21 RYR2NR - Jul 21, 15:05 UTCJul 21, 16:15 UTC1h 10m
2026-07-21 RYR98ML - Jul 21, 12:35 UTCJul 21, 14:00 UTC1h 25m
2026-07-21 RYR85FA BGY → STN Jul 21, 09:55 UTCJul 21, 11:35 UTC1h 40m
2026-07-21 RYR7CB DUB → GLA Jul 21, 07:30 UTCJul 21, 09:00 UTC1h 30m
2026-07-21 RYR8XV BGY → TIA Jul 21, 05:20 UTCJul 21, 06:25 UTC1h 5m
2026-07-20 RYR2UJ PFO → BER Jul 20, 20:15 UTCJul 20, 22:55 UTC2h 40m
2026-07-20 RYR733U - Jul 20, 16:00 UTCJul 20, 18:55 UTC2h 55m
2026-07-20 RYR74UN TRF → BGY Jul 20, 12:15 UTCJul 20, 14:10 UTC1h 55m
2026-07-20 RYR84CE BGY → TRF Jul 20, 09:15 UTCJul 20, 11:25 UTC2h 10m
2026-07-20 RYR7FX - Jul 20, 07:15 UTCJul 20, 08:20 UTC1h 5m
2026-07-20 RYR3TW - Jul 20, 05:10 UTCJul 20, 06:25 UTC1h 15m
2026-07-19 RYR6MJ AGP → VLC Jul 19, 20:05 UTCJul 19, 21:15 UTC1h 10m
2026-07-19 RYR57ME - Jul 19, 18:15 UTCJul 19, 19:20 UTC1h 5m
2026-07-19 RYR73ZK - Jul 19, 15:25 UTCJul 19, 17:05 UTC1h 40m
2026-07-19 RYR3N - Jul 19, 12:15 UTCJul 19, 14:05 UTC1h 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-ENP page for operator, model, and routing details .

Mode-S 4CA8DB frequently asked

What is Mode-S code 4CA8DB?
4CA8DB is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-ENP.
Where is Mode-S 4CA8DB registered?
Mode-S code 4CA8DB is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA8DB broadcasting right now?
Yes. Mode-S 4CA8DB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA8DB, octal 23124333, decimal 5,023,963.
What flights does 4CA8DB operate?
Mode-S 4CA8DB has broadcast 20 distinct callsigns, including RYR95PT, RYR90QD, RYR63RY, RYR6199, RYR22JQ.