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
No current signal · last broadcast 4h ago
Flights observed
222
Distinct callsigns
20
Country
IE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4CAEFB.

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
ITY221 ITA Airways 10 2026-05-28
ITY218 ITA Airways 10 2026-05-28
ITY227 ITA Airways 8 2026-05-09
ITY226 ITA Airways 8 2026-05-09
ITY220 ITA Airways 8 2026-05-26
ITY219 ITA Airways 8 2026-05-26
ITY224 ITA Airways 6 2026-05-28
ITY113 ITA Airways 6 2026-05-04
ITY247 ITA Airways 5 2026-05-07
ITY238 ITA Airways 5 2026-05-07
ITY217 ITA Airways 5 2026-05-08
ITY112 ITA Airways 5 2026-05-04
ITY453 ITA Airways 4 2026-05-29
ITY452 ITA Airways 4 2026-05-29
ITY2080 ITA Airways 4 2026-05-26
ITY1298 ITA Airways 4 2026-05-27
ITY1291 ITA Airways 4 2026-05-27
ITY1787 ITA Airways 3 2026-04-22
ITY1629 ITA Airways 3 2026-05-15
ITY1389 ITA Airways 3 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ITY1177 LIN → SUF May 29, 20:20 UTCMay 29, 21:35 UTC1h 15m
2026-05-29 ITY453 MUC → LIN May 29, 18:20 UTCMay 29, 19:05 UTC45m
2026-05-29 ITY452 LIN → MUC May 29, 16:00 UTCMay 29, 16:50 UTC50m
2026-05-29 ITY351 ORY → LIN May 29, 09:15 UTCMay 29, 10:20 UTC1h 5m
2026-05-29 ITY350 LIN → ORY May 29, 06:55 UTCMay 29, 08:00 UTC1h 5m
2026-05-28 ITY8010 CAG → AHO May 28, 22:55 UTCMay 29, 00:20 UTC1h 25m
2026-05-28 ITY224 LIN → LCY May 28, 20:10 UTCMay 28, 21:40 UTC1h 30m
2026-05-28 ITY1282 NAP → LIN May 28, 16:25 UTCMay 28, 17:20 UTC55m
2026-05-28 ITY1281 LIN → NAP May 28, 14:20 UTCMay 28, 15:10 UTC50m
2026-05-28 ITY221 LCY → LIN May 28, 08:30 UTCMay 28, 09:55 UTC1h 25m
2026-05-28 ITY218 LIN → LCY May 28, 05:50 UTCMay 28, 07:15 UTC1h 25m
2026-05-27 ITY1298 NAP → LIN May 27, 19:45 UTCMay 27, 20:40 UTC55m
2026-05-27 ITY1291 LIN → NAP May 27, 17:40 UTCMay 27, 18:30 UTC50m
2026-05-27 ITY1672 BRI → LIN May 27, 14:30 UTCMay 27, 15:45 UTC1h 15m
2026-05-27 ITY1671 LIN → BRI May 27, 11:45 UTCMay 27, 13:00 UTC1h 15m
2026-05-27 ITY221 LCY → LIN May 27, 08:15 UTCMay 27, 09:45 UTC1h 30m
2026-05-27 ITY218 LIN → LCY May 27, 05:45 UTCMay 27, 07:15 UTC1h 31m
2026-05-26 ITY219 LCY → LIN May 26, 18:19 UTCMay 26, 19:45 UTC1h 25m
2026-05-26 ITY220 LIN → LCY May 26, 16:05 UTCMay 26, 17:30 UTC1h 25m
2026-05-26 ITY2080 FCO → LIN May 26, 14:20 UTCMay 26, 15:09 UTC50m
2026-05-26 ITY403 FRA → FCO May 26, 10:10 UTCMay 26, 11:30 UTC1h 20m
2026-05-26 ITY400 FCO → FRA May 26, 06:59 UTCMay 26, 08:34 UTC1h 35m
2026-05-25 ITY1392 GOA → FCO May 25, 18:00 UTCMay 25, 18:50 UTC50m
2026-05-25 ITY1391 FCO → GOA May 25, 16:15 UTCMay 25, 17:00 UTC45m
2026-05-25 ITY1270 NAP → FCO May 25, 14:20 UTCMay 25, 14:50 UTC30m
2026-05-25 ITY1269 FCO → NAP May 25, 12:05 UTCMay 25, 12:30 UTC25m
2026-05-25 ITY1384 GOA → FCO May 25, 09:30 UTCMay 25, 10:10 UTC40m
2026-05-25 ITY1383 FCO → GOA May 25, 07:50 UTCMay 25, 08:25 UTC35m
2026-05-25 ITY1380 GOA → FCO May 25, 04:55 UTCMay 25, 05:40 UTC45m
2026-05-24 ITY1389 FCO → GOA May 24, 20:00 UTCMay 24, 20:40 UTC40m
2026-05-24 ITY885 MLA → FCO May 24, 17:15 UTCMay 24, 18:30 UTC1h 15m
2026-05-24 ITY884 FCO → MLA May 24, 15:15 UTCMay 24, 16:15 UTC1h 0m
2026-05-24 ITY1750 CTA → FCO May 24, 13:10 UTCMay 24, 14:05 UTC55m
2026-05-24 ITY1741 FCO → CTA May 24, 11:15 UTCMay 24, 12:05 UTC50m
2026-05-24 ITY1314 BLQ → FCO May 24, 09:15 UTCMay 24, 09:50 UTC35m
2026-05-24 ITY1311 FCO → BLQ May 24, 07:35 UTCMay 24, 08:10 UTC35m
2026-05-24 ITY1380 GOA → FCO May 24, 04:55 UTCMay 24, 05:35 UTC40m
2026-05-23 ITY1389 FCO → GOA May 23, 20:05 UTCMay 23, 20:50 UTC45m
2026-05-23 ITY1320 BLQ → FCO May 23, 17:20 UTCMay 23, 17:55 UTC35m
2026-05-23 ITY1317 FCO → BLQ May 23, 15:40 UTCMay 23, 16:20 UTC40m
2026-05-23 ITY345 NCE → FCO May 23, 13:40 UTCMay 23, 14:30 UTC50m
2026-05-23 ITY344 FCO → NCE May 23, 11:40 UTCMay 23, 12:30 UTC50m
2026-05-23 ITY1358 TRS → FCO May 23, 09:20 UTCMay 23, 10:00 UTC40m
2026-05-23 ITY1357 FCO → TRS May 23, 07:30 UTCMay 23, 08:20 UTC50m
2026-05-23 ITY1380 GOA → FCO May 23, 04:50 UTCMay 23, 05:35 UTC45m
2026-05-22 ITY1389 FCO → GOA May 22, 21:10 UTCMay 22, 22:10 UTC1h 0m
2026-05-22 ITY8011 FCO → NAP May 22, 19:10 UTCMay 22, 19:35 UTC25m
2026-05-19 ITY8008 LIN → LIN May 19, 07:55 UTCMay 19, 08:15 UTC20m
2026-05-16 ITY1649 LIN → BRI May 16, 06:06 UTCMay 16, 07:25 UTC1h 20m
2026-05-15 ITY311 CDG → LIN May 15, 19:30 UTCMay 15, 20:35 UTC1h 5m

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?
No active broadcast right now. Last signal was 4h ago.
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 ITY221, ITY218, ITY227, ITY226, ITY220.