Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
Broadcasting now · callsign ITY1765 · 750 ft
Flights observed
675
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 19:20 UTC

Current position

4CAF20 is currently broadcasting. Map zoomed to live position.

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 - 25 2026-07-15
ITY1718 - 25 2026-07-15
ITY1768 - 22 2026-07-12
ITY1IP - 20 2026-07-11
ITY1721 - 17 2026-07-14
ITY1720 - 14 2026-07-14
ITY1286 - 9 2026-07-14
ITY1285 - 9 2026-07-14
ITY345 - 7 2026-06-29
ITY344 - 7 2026-06-29
ITY2130 ITA Airways 7 2026-07-25
ITY1799 - 7 2026-07-24
ITY1766 - 7 2026-07-24
ITY1312 - 7 2026-07-07
ITY1363 ITA Airways 6 2026-07-20
ITY1356 ITA Airways 6 2026-07-21
ITY1321 ITA Airways 6 2026-07-06
ITY079 ITA Airways 6 2026-07-26
ITY076 ITA Airways 6 2026-07-26
ITY574 - 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ITY1769 FCO → PMO Jul 26, 18:40 UTCJul 26, 19:20 UTC40m
2026-07-26 ITY079 BCN → FCO Jul 26, 16:10 UTCJul 26, 17:20 UTC1h 10m
2026-07-26 ITY076 FCO → BCN Jul 26, 13:25 UTCJul 26, 14:50 UTC1h 25m
2026-07-26 ITY343 NCE → FCO Jul 26, 11:00 UTCJul 26, 11:45 UTC45m
2026-07-26 ITY348 FCO → NCE Jul 26, 08:35 UTCJul 26, 09:35 UTC1h 0m
2026-07-26 ITY2013 LIN → FCO Jul 26, 05:10 UTCJul 26, 06:05 UTC55m
2026-07-25 ITY2130 FCO → LIN Jul 25, 20:40 UTCJul 25, 21:25 UTC45m
2026-07-25 ITY433 MUC → FCO Jul 25, 18:00 UTCJul 25, 19:05 UTC1h 5m
2026-07-25 ITY436 FCO → MUC Jul 25, 15:35 UTCJul 25, 16:50 UTC1h 15m
2026-07-25 ITY1730 - Jul 25, 12:30 UTCJul 25, 13:30 UTC1h 0m
2026-07-25 ITY1739 FCO → CTA Jul 25, 10:30 UTCJul 25, 11:15 UTC45m
2026-07-25 ITY1782 PMO → FCO Jul 25, 08:15 UTCJul 25, 09:05 UTC50m
2026-07-25 ITY1777 FCO → PMO Jul 25, 06:30 UTCJul 25, 07:05 UTC35m
2026-07-24 ITY433 MUC → FCO Jul 24, 18:00 UTCJul 24, 19:05 UTC1h 5m
2026-07-24 ITY436 FCO → MUC Jul 24, 15:20 UTCJul 24, 16:40 UTC1h 20m
2026-07-24 ITY1766 - Jul 24, 12:55 UTCJul 24, 13:40 UTC45m
2026-07-24 ITY1799 - Jul 24, 11:05 UTCJul 24, 11:55 UTC50m
2026-07-24 ITY1782 PMO → FCO Jul 24, 08:20 UTCJul 24, 09:15 UTC55m
2026-07-24 ITY1777 FCO → PMO Jul 24, 06:25 UTCJul 24, 07:05 UTC40m
2026-07-23 ITY885 - Jul 23, 19:20 UTCJul 23, 20:30 UTC1h 10m
2026-07-23 ITY884 - Jul 23, 17:20 UTCJul 23, 18:25 UTC1h 5m
2026-07-23 ITY1766 - Jul 23, 14:55 UTCJul 23, 15:45 UTC50m
2026-07-23 ITY1799 - Jul 23, 12:40 UTCJul 23, 13:10 UTC30m
2026-07-23 ITY1314 BLQ → FCO Jul 23, 09:25 UTCJul 23, 09:55 UTC30m
2026-07-23 ITY1311 - Jul 23, 07:35 UTCJul 23, 08:15 UTC40m
2026-07-23 ITY317 CDG → FCO Jul 23, 04:25 UTCJul 23, 05:55 UTC1h 30m
2026-07-22 ITY332 - Jul 22, 19:45 UTCJul 22, 21:35 UTC1h 50m
2026-07-22 ITY1754 CTA → FCO Jul 22, 15:30 UTCJul 22, 16:25 UTC55m
2026-07-22 ITY7CA FCO → CTA Jul 22, 13:15 UTCJul 22, 14:00 UTC45m
2026-07-22 ITY585 - Jul 22, 11:10 UTCJul 22, 11:45 UTC35m
2026-07-21 ITY2125 - Jul 21, 19:45 UTCJul 21, 20:25 UTC40m
2026-07-21 ITY2056 FCO → LIN Jul 21, 18:00 UTCJul 21, 18:45 UTC45m
2026-07-21 ITY079 BCN → FCO Jul 21, 15:25 UTCJul 21, 16:40 UTC1h 15m
2026-07-21 ITY076 FCO → BCN Jul 21, 12:45 UTCJul 21, 14:15 UTC1h 30m
2026-07-21 ITY575 GVA → FCO Jul 21, 09:55 UTCJul 21, 10:55 UTC1h 0m
2026-07-21 ITY576 - Jul 21, 07:20 UTCJul 21, 08:40 UTC1h 20m
2026-07-21 ITY1356 TRS → FCO Jul 21, 04:40 UTCJul 21, 05:25 UTC45m
2026-07-20 ITY1363 FCO → TRS Jul 20, 20:40 UTCJul 20, 21:30 UTC50m
2026-07-20 ITY573 - Jul 20, 17:50 UTCJul 20, 19:40 UTC1h 50m
2026-07-20 ITY574 - Jul 20, 15:25 UTCJul 20, 16:40 UTC1h 15m
2026-07-20 ITY077 - Jul 20, 10:25 UTCJul 20, 11:35 UTC1h 10m
2026-07-20 ITY074 FCO → BCN Jul 20, 07:40 UTCJul 20, 09:05 UTC1h 25m
2026-07-20 ITY2013 LIN → FCO Jul 20, 05:25 UTCJul 20, 06:10 UTC45m
2026-07-19 ITY1702 - Jul 19, 20:40 UTCJul 19, 22:05 UTC1h 25m
2026-07-19 ITY1701 - Jul 19, 18:10 UTCJul 19, 19:30 UTC1h 20m
2026-07-19 ITY1672 - Jul 19, 15:50 UTCJul 19, 17:05 UTC1h 15m
2026-07-19 ITY1671 - Jul 19, 13:20 UTCJul 19, 14:30 UTC1h 10m
2026-07-19 ITY1772 - Jul 19, 10:50 UTCJul 19, 12:00 UTC1h 10m
2026-07-19 ITY1773 LIN → PMO Jul 19, 07:55 UTCJul 19, 09:15 UTC1h 20m
2026-07-18 ITY2130 FCO → LIN Jul 18, 20:25 UTCJul 18, 21:15 UTC50m

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?
Yes. Mode-S 4CAF20 is currently airborne.
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.