Apparatus

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sensors Mode-S transponder

4CAF20

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-TEE · AIRBUS A220-300

Hex
4CAF20
Octal
23127440
Decimal
5,025,568
Country
IE
Tail
EI-TEE
Type
BCS3
No current signal · last broadcast 4h ago
Flights observed
312
Distinct callsigns
20
Country
IE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4CAF20.

Country allocation

The ICAO 24-bit address 4CAF20 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
ITY1727 ITA Airways 20 2026-05-29
ITY1718 ITA Airways 20 2026-05-29
ITY1768 ITA Airways 17 2026-05-29
ITY1IP ITA Airways 15 2026-05-28
ITY1721 ITA Airways 13 2026-05-29
ITY1720 ITA Airways 10 2026-05-29
ITY1286 ITA Airways 6 2026-05-25
ITY1285 ITA Airways 6 2026-05-25
ITY1793 ITA Airways 5 2026-05-27
ITY1790 ITA Airways 5 2026-05-27
ITY1282 ITA Airways 5 2026-05-07
ITY1281 ITA Airways 5 2026-05-07
ITY451 ITA Airways 4 2026-05-11
ITY450 ITA Airways 4 2026-05-11
ITY151 ITA Airways 4 2026-05-27
ITY148 ITA Airways 4 2026-05-27
ITY1395 ITA Airways 4 2026-05-09
ITY1386 ITA Airways 4 2026-05-09
ITY1296 ITA Airways 4 2026-05-27
ITY1287 ITA Airways 4 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ITY1297 LIN → NAP May 29, 19:30 UTCMay 29, 20:35 UTC1h 5m
2026-05-29 ITY1720 CTA → LIN May 29, 16:55 UTCMay 29, 18:25 UTC1h 30m
2026-05-29 ITY1721 LIN → CTA May 29, 14:10 UTCMay 29, 15:35 UTC1h 25m
2026-05-29 ITY1718 CTA → LIN May 29, 10:40 UTCMay 29, 12:10 UTC1h 30m
2026-05-29 ITY1727 LIN → CTA May 29, 07:15 UTCMay 29, 08:45 UTC1h 30m
2026-05-29 ITY1768 PMO → LIN May 29, 04:35 UTCMay 29, 05:50 UTC1h 15m
2026-05-28 ITY1IP LIN → PMO May 28, 21:15 UTCMay 28, 22:30 UTC1h 15m
2026-05-28 ITY1720 CTA → LIN May 28, 17:25 UTCMay 28, 19:20 UTC1h 55m
2026-05-28 ITY1721 LIN → CTA May 28, 14:05 UTCMay 28, 15:30 UTC1h 25m
2026-05-28 ITY1718 CTA → LIN May 28, 10:20 UTCMay 28, 11:55 UTC1h 35m
2026-05-28 ITY1727 LIN → CTA May 28, 07:00 UTCMay 28, 08:20 UTC1h 20m
2026-05-28 ITY1768 PMO → LIN May 28, 04:35 UTCMay 28, 05:45 UTC1h 10m
2026-05-27 ITY1IP LIN → PMO May 27, 20:45 UTCMay 27, 22:05 UTC1h 20m
2026-05-27 ITY1790 PMO → LIN May 27, 18:05 UTCMay 27, 19:25 UTC1h 20m
2026-05-27 ITY1793 LIN → PMO May 27, 15:20 UTCMay 27, 16:25 UTC1h 5m
2026-05-27 ITY1296 NAP → LIN May 27, 12:45 UTCMay 27, 13:45 UTC1h 0m
2026-05-27 ITY1287 LIN → NAP May 27, 10:05 UTCMay 27, 11:00 UTC55m
2026-05-27 ITY151 BRU → LIN May 27, 07:45 UTCMay 27, 08:50 UTC1h 5m
2026-05-27 ITY148 LIN → BRU May 27, 05:09 UTCMay 27, 06:29 UTC1h 20m
2026-05-26 ITY153 BRU → LIN May 26, 18:24 UTCMay 26, 19:30 UTC1h 5m
2026-05-26 ITY154 LIN → BRU May 26, 15:49 UTCMay 26, 16:59 UTC1h 10m
2026-05-26 ITY1296 NAP → LIN May 26, 13:34 UTCMay 26, 14:35 UTC1h 0m
2026-05-26 ITY1287 LIN → NAP May 26, 10:05 UTCMay 26, 11:05 UTC1h 0m
2026-05-26 ITY151 BRU → LIN May 26, 07:34 UTCMay 26, 08:45 UTC1h 10m
2026-05-26 ITY148 LIN → BRU May 26, 05:15 UTCMay 26, 06:20 UTC1h 5m
2026-05-25 ITY1790 PMO → LIN May 25, 17:50 UTCMay 25, 19:05 UTC1h 15m
2026-05-25 ITY1793 LIN → PMO May 25, 15:25 UTCMay 25, 16:35 UTC1h 10m
2026-05-25 ITY1654 BRI → LIN May 25, 11:50 UTCMay 25, 13:05 UTC1h 15m
2026-05-25 ITY1655 LIN → BRI May 25, 09:00 UTCMay 25, 10:15 UTC1h 15m
2026-05-25 ITY1286 NAP → LIN May 25, 06:50 UTCMay 25, 07:40 UTC50m
2026-05-25 ITY1285 LIN → NAP May 25, 04:30 UTCMay 25, 05:25 UTC55m
2026-05-24 ITY1650 BRI → LIN May 24, 20:15 UTCMay 24, 21:20 UTC1h 5m
2026-05-24 ITY1639 LIN → BRI May 24, 18:00 UTCMay 24, 19:15 UTC1h 15m
2026-05-24 ITY313 CDG → LIN May 24, 15:40 UTCMay 24, 16:50 UTC1h 10m
2026-05-24 ITY312 LIN → CDG May 24, 13:25 UTCMay 24, 14:25 UTC1h 0m
2026-05-24 ITY1718 CTA → LIN May 24, 10:50 UTCMay 24, 12:15 UTC1h 25m
2026-05-24 ITY1727 LIN → CTA May 24, 06:55 UTCMay 24, 08:25 UTC1h 30m
2026-05-23 ITY2056 FCO → LIN May 23, 17:05 UTCMay 23, 17:55 UTC50m
2026-05-23 ITY2061 LIN → FCO May 23, 15:10 UTCMay 23, 15:55 UTC45m
2026-05-23 ITY2044 FCO → LIN May 23, 12:30 UTCMay 23, 13:20 UTC50m
2026-05-23 ITY1724 CTA → FCO May 23, 10:20 UTCMay 23, 11:20 UTC1h 0m
2026-05-23 ITY1731 FCO → CTA May 23, 08:10 UTCMay 23, 09:00 UTC50m
2026-05-23 ITY2013 LIN → FCO May 23, 05:20 UTCMay 23, 06:05 UTC45m
2026-05-22 ITY1720 CTA → LIN May 22, 17:20 UTCMay 22, 18:55 UTC1h 35m
2026-05-22 ITY1721 LIN → CTA May 22, 14:40 UTCMay 22, 16:05 UTC1h 25m
2026-05-22 ITY2044 FCO → LIN May 22, 12:40 UTCMay 22, 13:30 UTC50m
2026-05-22 ITY1724 CTA → FCO May 22, 09:50 UTCMay 22, 10:55 UTC1h 5m
2026-05-22 ITY1727 LIN → CTA May 22, 06:55 UTCMay 22, 08:25 UTC1h 30m
2026-05-22 ITY1768 PMO → LIN May 22, 04:35 UTCMay 22, 06:00 UTC1h 25m
2026-05-21 ITY1IP LIN → PMO May 21, 20:20 UTCMay 21, 21:30 UTC1h 10m

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

Mode-S 4CAF20 frequently asked

What is Mode-S code 4CAF20?
4CAF20 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-TEE.
Where is Mode-S 4CAF20 registered?
Mode-S code 4CAF20 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF20 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 4CAF20, octal 23127440, decimal 5,025,568.
What flights does 4CAF20 operate?
Mode-S 4CAF20 has broadcast 20 distinct callsigns, including ITY1727, ITY1718, ITY1768, ITY1IP, ITY1721.