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sensors Mode-S transponder

4CAEFB

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-MVB · AIRBUS A220-100

Hex
4CAEFB
Octal
23127373
Decimal
5,025,531
Country
IE
Tail
EI-MVB
Type
BCS1
Broadcasting now · callsign ITY350 · 9,675 ft
Flights observed
496
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Current position

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

Country allocation

The ICAO 24-bit address 4CAEFB 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
ITY227 - 18 2026-07-11
ITY226 - 18 2026-07-11
ITY220 - 18 2026-07-08
ITY219 - 18 2026-07-08
ITY221 - 16 2026-07-09
ITY218 - 16 2026-07-09
ITY224 - 14 2026-07-10
ITY238 - 13 2026-07-10
ITY217 - 13 2026-07-11
ITY247 - 12 2026-07-10
ITY2080 - 8 2026-07-03
ITY113 ITA Airways 6 2026-05-04
ITY305 - 5 2026-07-01
ITY300 - 5 2026-07-01
ITY2045 - 5 2026-07-02
ITY1320 - 5 2026-06-30
ITY1296 ITA Airways 5 2026-07-10
ITY1287 - 5 2026-07-10
ITY1278 - 5 2026-07-14
ITY112 ITA Airways 5 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ITY1278 - Jul 14, 04:35 UTCJul 14, 04:45 UTC10m
2026-07-13 ITY1297 - Jul 13, 20:15 UTCJul 13, 21:00 UTC45m
2026-07-13 ITY1632 - Jul 13, 18:05 UTCJul 13, 19:20 UTC1h 15m
2026-07-13 ITY1647 LIN → BRI Jul 13, 15:55 UTCJul 13, 17:00 UTC1h 5m
2026-07-13 ITY2044 - Jul 13, 13:55 UTCJul 13, 14:40 UTC45m
2026-07-13 ITY1724 - Jul 13, 10:35 UTCJul 13, 11:35 UTC1h 0m
2026-07-13 ITY1731 - Jul 13, 08:15 UTCJul 13, 09:00 UTC45m
2026-07-13 ITY1380 - Jul 13, 05:01 UTCJul 13, 05:40 UTC40m
2026-07-12 ITY1389 - Jul 12, 20:20 UTCJul 12, 21:05 UTC45m
2026-07-12 ITY1392 GOA → FCO Jul 12, 17:30 UTCJul 12, 18:10 UTC40m
2026-07-12 ITY1391 FCO → GOA Jul 12, 15:50 UTCJul 12, 16:35 UTC45m
2026-07-12 ITY1318 - Jul 12, 13:50 UTCJul 12, 14:25 UTC35m
2026-07-12 ITY1319 - Jul 12, 12:05 UTCJul 12, 12:40 UTC35m
2026-07-12 ITY1358 - Jul 12, 09:15 UTCJul 12, 09:55 UTC40m
2026-07-12 ITY1357 - Jul 12, 07:35 UTCJul 12, 08:20 UTC45m
2026-07-12 ITY1722 - Jul 12, 04:10 UTCJul 12, 05:05 UTC55m
2026-07-11 ITY4LI - Jul 11, 19:50 UTCJul 11, 21:10 UTC1h 20m
2026-07-11 ITY051 - Jul 11, 16:50 UTCJul 11, 18:10 UTC1h 20m
2026-07-11 ITY050 - Jul 11, 13:50 UTCJul 11, 15:15 UTC1h 25m
2026-07-11 ITY227 - Jul 11, 11:20 UTCJul 11, 12:50 UTC1h 30m
2026-07-11 ITY226 LIN → LCY Jul 11, 08:55 UTCJul 11, 10:25 UTC1h 30m
2026-07-11 ITY217 LCY → LIN Jul 11, 06:05 UTCJul 11, 07:35 UTC1h 30m
2026-07-10 ITY224 LIN → LCY Jul 10, 18:45 UTCJul 10, 20:10 UTC1h 25m
2026-07-10 ITY247 LCY → LIN Jul 10, 16:20 UTCJul 10, 17:50 UTC1h 30m
2026-07-10 ITY238 LIN → LCY Jul 10, 13:50 UTCJul 10, 15:20 UTC1h 30m
2026-07-10 ITY1296 NAP → LIN Jul 10, 11:50 UTCJul 10, 12:50 UTC1h 0m
2026-07-10 ITY1287 - Jul 10, 09:00 UTCJul 10, 10:15 UTC1h 15m
2026-07-10 ITY217 - Jul 10, 05:50 UTCJul 10, 07:20 UTC1h 30m
2026-07-09 ITY224 - Jul 9, 18:25 UTCJul 9, 19:50 UTC1h 25m
2026-07-09 ITY247 LCY → LIN Jul 9, 15:45 UTCJul 9, 17:15 UTC1h 30m
2026-07-09 ITY238 - Jul 9, 14:10 UTCJul 9, 14:45 UTC35m
2026-07-09 ITY238 - Jul 9, 13:15 UTCJul 9, 14:05 UTC50m
2026-07-09 ITY221 LCY → LIN Jul 9, 08:25 UTCJul 9, 09:55 UTC1h 30m
2026-07-09 ITY218 LIN → LCY Jul 9, 06:00 UTCJul 9, 07:30 UTC1h 30m
2026-07-08 ITY219 LCY → LIN Jul 8, 18:40 UTCJul 8, 20:00 UTC1h 20m
2026-07-08 ITY220 LIN → LCY Jul 8, 16:05 UTCJul 8, 17:35 UTC1h 30m
2026-07-08 ITY227 LCY → LIN Jul 8, 13:00 UTCJul 8, 14:25 UTC1h 25m
2026-07-08 ITY226 LIN → LCY Jul 8, 10:35 UTCJul 8, 12:05 UTC1h 30m
2026-07-08 ITY217 LCY → LIN Jul 8, 05:55 UTCJul 8, 07:20 UTC1h 25m
2026-07-07 ITY224 LIN → LCY Jul 7, 18:20 UTCJul 7, 19:45 UTC1h 25m
2026-07-07 ITY247 - Jul 7, 15:30 UTCJul 7, 17:00 UTC1h 30m
2026-07-07 ITY238 LIN → LCY Jul 7, 13:10 UTCJul 7, 14:40 UTC1h 30m
2026-07-07 ITY1174 - Jul 7, 10:50 UTCJul 7, 12:15 UTC1h 25m
2026-07-07 ITY1179 LIN → SUF Jul 7, 08:10 UTCJul 7, 09:30 UTC1h 20m
2026-07-07 ITY1278 - Jul 7, 04:40 UTCJul 7, 05:40 UTC1h 0m
2026-07-06 ITY1297 - Jul 6, 20:20 UTCJul 6, 21:15 UTC55m
2026-07-06 ITY1632 BRI → LIN Jul 6, 17:00 UTCJul 6, 18:15 UTC1h 15m
2026-07-06 ITY1647 LIN → BRI Jul 6, 14:20 UTCJul 6, 15:30 UTC1h 10m
2026-07-06 ITY2044 - Jul 6, 12:35 UTCJul 6, 13:20 UTC45m
2026-07-06 ITY1358 - Jul 6, 09:30 UTCJul 6, 10:15 UTC45m

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

Mode-S 4CAEFB frequently asked

What is Mode-S code 4CAEFB?
4CAEFB is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-MVB.
Where is Mode-S 4CAEFB registered?
Mode-S code 4CAEFB is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEFB broadcasting right now?
Yes. Mode-S 4CAEFB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEFB, octal 23127373, decimal 5,025,531.
What flights does 4CAEFB operate?
Mode-S 4CAEFB has broadcast 20 distinct callsigns, including ITY227, ITY226, ITY220, ITY219, ITY221.