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sensors Mode-S transponder

4CC2A3

ICAO 24-bit transponder address · allocated to Iceland

Currently assigned to TF-FIN · BOEING 757-200

Hex
4CC2A3
Octal
23141243
Decimal
5,030,563
Country
IS
Tail
TF-FIN
Type
B752
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
284
Distinct callsigns
20
Country
IS
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S 4CC2A3.

Country allocation

The ICAO 24-bit address 4CC2A3 falls within the block assigned to Iceland (IS) by ICAO Annex 10, Volume III. Every aircraft registered in Iceland 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
ICE670 Icelandair 43 2026-07-25
ICE671 Icelandair 37 2026-07-23
ICE28P Icelandair 30 2026-07-24
ICE27M Icelandair 17 2026-07-24
ICE319 Icelandair 14 2026-07-26
ICE318 Icelandair 14 2026-07-26
ICE217 - 8 2026-07-10
ICE216 - 8 2026-07-10
ICE597 - 7 2026-06-20
ICE596 - 7 2026-06-20
ICE455 Icelandair 6 2026-07-26
ICE454 Icelandair 6 2026-07-26
ICE8K - 5 2026-07-03
ICE7J - 5 2026-07-03
ICE501 - 5 2026-06-30
ICE500 - 5 2026-06-30
ICE9L Icelandair 4 2026-07-25
ICE85V Icelandair 4 2026-06-10
ICE84H Icelandair 4 2026-06-10
ICE521 Icelandair 4 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ICE455 LHR → KEF Jul 26, 20:35 UTCJul 26, 21:50 UTC1h 15m
2026-07-26 ICE454 KEF → LHR Jul 26, 16:15 UTCJul 26, 18:40 UTC2h 25m
2026-07-26 ICE319 OSL → KEF Jul 26, 12:00 UTCJul 26, 14:25 UTC2h 25m
2026-07-26 ICE318 KEF → OSL Jul 26, 08:10 UTCJul 26, 10:25 UTC2h 15m
2026-07-25 ICE9L ZRH → KEF Jul 25, 12:35 UTCJul 25, 16:15 UTC3h 40m
2026-07-25 ICE12C KEF → ZRH Jul 25, 07:55 UTCJul 25, 11:00 UTC3h 5m
2026-07-25 ICE670 DEN → KEF Jul 25, 05:20 UTCJul 25, 05:45 UTC25m
2026-07-24 ICE670 DEN → KEF Jul 24, 23:00 UTCJul 25, 01:00 UTC2h 0m
2026-07-24 ICE27M KEF → DEN Jul 24, 11:20 UTCJul 24, 18:55 UTC7h 35m
2026-07-24 ICE28P DEN → KEF Jul 24, 09:05 UTCJul 24, 09:25 UTC20m
2026-07-24 ICE28P DEN → KEF Jul 24, 02:45 UTCJul 24, 04:45 UTC2h 0m
2026-07-23 ICE671 KEF → DEN Jul 23, 22:20 UTCJul 24, 00:55 UTC2h 35m
2026-07-23 ICE671 KEF → DEN Jul 23, 17:00 UTCJul 23, 17:15 UTC15m
2026-07-23 ICE670 DEN → KEF Jul 23, 06:15 UTCJul 23, 06:35 UTC20m
2026-07-22 ICE670 DEN → KEF Jul 22, 23:55 UTCJul 23, 01:55 UTC2h 0m
2026-07-22 ICE27M KEF → DEN Jul 22, 11:15 UTCJul 22, 18:20 UTC7h 5m
2026-07-22 ICE28P DEN → KEF Jul 22, 02:30 UTCJul 22, 04:25 UTC1h 55m
2026-07-21 ICE671 - Jul 21, 22:25 UTCJul 22, 00:30 UTC2h 5m
2026-07-21 ICE671 - Jul 21, 17:15 UTCJul 21, 17:30 UTC15m
2026-07-21 ICE319 OSL → KEF Jul 21, 12:05 UTCJul 21, 14:45 UTC2h 40m
2026-07-21 ICE318 KEF → OSL Jul 21, 08:15 UTCJul 21, 10:25 UTC2h 10m
2026-07-21 ICE670 - Jul 21, 05:30 UTCJul 21, 05:50 UTC20m
2026-07-20 ICE670 - Jul 20, 23:00 UTCJul 21, 00:50 UTC1h 50m
2026-07-20 ICE27M KEF → DEN Jul 20, 11:55 UTCJul 20, 19:15 UTC7h 20m
2026-07-20 ICE28P DEN → KEF Jul 20, 10:00 UTCJul 20, 10:15 UTC15m
2026-07-20 ICE28P DEN → KEF Jul 20, 03:45 UTCJul 20, 05:35 UTC1h 50m
2026-07-19 ICE671 - Jul 19, 22:45 UTCJul 20, 00:55 UTC2h 10m
2026-07-19 ICE671 - Jul 19, 17:50 UTCJul 19, 18:05 UTC15m
2026-07-19 ICE9L ZRH → KEF Jul 19, 12:20 UTCJul 19, 16:25 UTC4h 5m
2026-07-19 ICE12C - Jul 19, 07:30 UTCJul 19, 10:35 UTC3h 5m
2026-07-19 ICE670 - Jul 19, 05:40 UTCJul 19, 05:55 UTC15m
2026-07-18 ICE670 - Jul 18, 23:00 UTCJul 19, 00:55 UTC1h 55m
2026-07-18 ICE27M KEF → DEN Jul 18, 11:00 UTCJul 18, 18:05 UTC7h 5m
2026-07-18 ICE28P DEN → KEF Jul 18, 08:45 UTCJul 18, 09:05 UTC20m
2026-07-18 ICE28P DEN → KEF Jul 18, 02:19 UTCJul 18, 04:20 UTC2h 1m
2026-07-17 ICE671 KEF → DEN Jul 17, 17:05 UTCJul 18, 00:15 UTC7h 10m
2026-07-17 ICE319 - Jul 17, 12:19 UTCJul 17, 14:44 UTC2h 25m
2026-07-17 ICE318 - Jul 17, 07:55 UTCJul 17, 10:10 UTC2h 15m
2026-07-15 ICE670 - Jul 15, 23:15 UTCJul 16, 06:05 UTC6h 50m
2026-07-15 ICE27M - Jul 15, 11:00 UTCJul 15, 18:15 UTC7h 15m
2026-07-15 ICE28P - Jul 15, 09:10 UTCJul 15, 09:20 UTC10m
2026-07-15 ICE28P - Jul 15, 02:30 UTCJul 15, 04:25 UTC1h 55m
2026-07-14 ICE671 - Jul 14, 17:10 UTCJul 15, 00:25 UTC7h 14m
2026-07-14 ICE319 - Jul 14, 12:05 UTCJul 14, 14:25 UTC2h 20m
2026-07-14 ICE318 - Jul 14, 08:05 UTCJul 14, 10:20 UTC2h 15m
2026-07-13 ICE63L - Jul 13, 14:55 UTCJul 13, 19:30 UTC4h 35m
2026-07-13 ICE62L - Jul 13, 08:10 UTCJul 13, 12:25 UTC4h 15m
2026-07-13 ICE670 - Jul 13, 05:25 UTCJul 13, 05:45 UTC20m
2026-07-12 ICE670 - Jul 12, 22:50 UTCJul 13, 00:50 UTC2h 0m
2026-07-12 ICE27M KEF → DEN Jul 12, 11:10 UTCJul 12, 18:20 UTC7h 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 TF-FIN page for operator, model, and routing details .

Mode-S 4CC2A3 frequently asked

What is Mode-S code 4CC2A3?
4CC2A3 is an ICAO 24-bit transponder address. Allocated to Iceland. Assigned to TF-FIN.
Where is Mode-S 4CC2A3 registered?
Mode-S code 4CC2A3 is allocated to Iceland (IS). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CC2A3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC2A3, octal 23141243, decimal 5,030,563.
What flights does 4CC2A3 operate?
Mode-S 4CC2A3 has broadcast 20 distinct callsigns, including ICE670, ICE671, ICE28P, ICE27M, ICE319.