Apparatus

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sensors Mode-S transponder

459D6E

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-GKN · AIRBUS A-330-800

Hex
459D6E
Octal
21316556
Decimal
4,562,286
Country
DK
Tail
OY-GKN
Type
A338
No current signal · last broadcast 14h ago
Flights observed
49
Distinct callsigns
8
Country
DK
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 459D6E.

Country allocation

The ICAO 24-bit address 459D6E falls within the block assigned to Denmark (DK) by ICAO Annex 10, Volume III. Every aircraft registered in Denmark 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 8 distinct

Callsign Airline Flights Last seen
GRL781 Air Greenland 14 2026-05-28
GRL779 Air Greenland 14 2026-05-25
GRL782 Air Greenland 8 2026-05-19
GRL780 Air Greenland 7 2026-05-29
GRL6802 Air Greenland 3 2026-05-20
GRL6801 Air Greenland 1 2026-04-22
GRL3779 Air Greenland 1 2026-04-19
GRL1783 Air Greenland 1 2026-04-23

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-05-29 GRL780 SFJ → CPH May 29, 07:15 UTCMay 29, 18:35 UTC11h 20m
2026-05-28 GRL781 CPH → SFJ May 28, 08:20 UTCMay 28, 19:00 UTC10h 40m
2026-05-26 GRL781 CPH → SFJ May 26, 08:15 UTCMay 26, 18:55 UTC10h 40m
2026-05-25 GRL779 CPH → SFJ May 25, 07:15 UTCMay 25, 18:05 UTC10h 50m
2026-05-22 GRL779 CPH → SFJ May 22, 07:15 UTCMay 22, 18:10 UTC10h 55m
2026-05-21 GRL781 CPH → SFJ May 21, 08:10 UTCMay 21, 19:05 UTC10h 55m
2026-05-20 GRL6802 THU → CPH May 20, 07:05 UTCMay 20, 18:35 UTC11h 30m
2026-05-19 GRL782 SFJ → CPH May 19, 08:20 UTCMay 19, 19:10 UTC10h 50m
2026-05-18 GRL780 SFJ → CPH May 18, 07:10 UTCMay 18, 18:40 UTC11h 29m
2026-05-15 GRL780 SFJ → CPH May 15, 07:10 UTCMay 15, 18:10 UTC10h 59m
2026-05-14 GRL781 CPH → SFJ May 14, 08:05 UTCMay 14, 19:10 UTC11h 5m
2026-05-12 GRL782 SFJ → CPH May 12, 08:45 UTCMay 12, 20:55 UTC12h 10m
2026-05-11 GRL779 CPH → SFJ May 11, 07:20 UTCMay 11, 18:25 UTC11h 5m
2026-05-08 GRL779 CPH → SFJ May 8, 07:14 UTCMay 8, 18:25 UTC11h 10m
2026-05-07 GRL781 CPH → SFJ May 7, 08:25 UTCMay 7, 19:40 UTC11h 15m
2026-05-05 GRL781 CPH → SFJ May 5, 08:15 UTCMay 5, 19:00 UTC10h 45m
2026-05-04 GRL779 CPH → SFJ May 4, 07:25 UTCMay 4, 18:25 UTC11h 0m
2026-05-01 GRL779 CPH → SFJ May 1, 07:40 UTCMay 1, 18:45 UTC11h 5m
2026-04-30 GRL781 CPH → SFJ Apr 30, 08:10 UTCApr 30, 19:10 UTC11h 0m
2026-04-28 GRL781 CPH → SFJ Apr 28, 08:10 UTCApr 28, 20:10 UTC12h 0m
2026-04-27 GRL779 CPH → SFJ Apr 27, 07:20 UTCApr 27, 18:15 UTC10h 55m
2026-04-24 GRL779 CPH → SFJ Apr 24, 07:20 UTCApr 24, 18:25 UTC11h 5m
2026-04-23 GRL1783 CPH → GOH Apr 23, 13:00 UTCApr 23, 23:40 UTC10h 40m
2026-04-23 GRL6802 THU → CPH Apr 23, 08:35 UTCApr 23, 10:01 UTC1h 25m
2026-04-22 GRL6802 THU → CPH Apr 22, 09:35 UTCApr 23, 09:30 UTC23h 55m
2026-04-22 GRL6801 CPH → THU Apr 22, 08:40 UTCApr 22, 10:00 UTC1h 20m
2026-04-21 GRL781 CPH → SFJ Apr 21, 08:20 UTCApr 21, 19:25 UTC11h 5m
2026-04-19 GRL3779 CPH → CPH Apr 19, 07:35 UTCApr 19, 18:40 UTC11h 5m
2026-04-17 GRL780 SFJ → CPH Apr 17, 17:25 UTCApr 17, 18:40 UTC1h 15m
2026-04-17 GRL780 SFJ → CPH Apr 17, 15:50 UTCApr 17, 16:15 UTC25m
2026-04-17 GRL779 CPH → SFJ Apr 17, 09:30 UTCApr 17, 10:00 UTC30m
2026-04-17 GRL779 CPH → SFJ Apr 17, 07:20 UTCApr 17, 08:30 UTC1h 10m
2026-04-17 GRL779 CPH → SFJ Apr 17, 07:05 UTCApr 17, 07:15 UTC10m
2026-04-16 GRL782 SFJ → CPH Apr 16, 19:15 UTCApr 16, 19:30 UTC15m
2026-04-16 GRL782 SFJ → CPH Apr 16, 17:15 UTCApr 16, 19:10 UTC1h 55m
2026-04-16 GRL782 SFJ → CPH Apr 16, 16:40 UTCApr 16, 17:10 UTC30m
2026-04-16 GRL781 CPH → SFJ Apr 16, 09:10 UTCApr 16, 11:04 UTC1h 55m
2026-04-16 GRL781 CPH → SFJ Apr 16, 08:24 UTCApr 16, 09:05 UTC40m
2026-04-14 GRL782 SFJ → CPH Apr 14, 18:55 UTCApr 14, 19:10 UTC15m
2026-04-14 GRL782 SFJ → CPH Apr 14, 16:50 UTCApr 14, 18:45 UTC1h 55m
2026-04-14 GRL782 SFJ → CPH Apr 14, 16:25 UTCApr 14, 16:45 UTC20m
2026-04-14 GRL781 CPH → SFJ Apr 14, 11:05 UTCApr 14, 11:40 UTC35m
2026-04-14 GRL781 CPH → SFJ Apr 14, 09:10 UTCApr 14, 11:05 UTC1h 55m
2026-04-14 GRL781 CPH → SFJ Apr 14, 08:45 UTCApr 14, 09:05 UTC20m
2026-04-13 GRL780 - Apr 13, 16:50 UTCApr 13, 18:05 UTC1h 15m
2026-04-13 GRL780 - Apr 13, 15:05 UTCApr 13, 15:40 UTC35m
2026-04-13 GRL779 - Apr 13, 08:20 UTCApr 13, 10:05 UTC1h 45m
2026-04-13 GRL779 - Apr 13, 07:55 UTCApr 13, 10:05 UTC2h 10m
2026-04-13 GRL779 - Apr 13, 07:15 UTCApr 13, 08:15 UTC1h 0m

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 OY-GKN page for operator, model, and routing details .

Mode-S 459D6E frequently asked

What is Mode-S code 459D6E?
459D6E is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-GKN.
Where is Mode-S 459D6E registered?
Mode-S code 459D6E is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 459D6E broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 459D6E, octal 21316556, decimal 4,562,286.
What flights does 459D6E operate?
Mode-S 459D6E has broadcast 8 distinct callsigns, including GRL781, GRL779, GRL782, GRL780, GRL6802.