Apparatus

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sensors Mode-S transponder

45D068

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-TCH · AIRBUS A-321

Hex
45D068
Octal
21350150
Decimal
4,575,336
Country
DK
Tail
OY-TCH
Type
A321
No current signal · last broadcast 11d ago
Flights observed
114
Distinct callsigns
20
Country
DK
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 45D068.

Country allocation

The ICAO 24-bit address 45D068 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 20 distinct

Callsign Airline Flights Last seen
VKG687 - 3 2026-04-16
VKG525 - 3 2026-05-14
VKG512 SunClass Airlines 3 2026-05-14
VKG4985 - 3 2026-04-16
VKG459 - 3 2026-04-14
VKG458 - 3 2026-04-14
VKG455 - 3 2026-04-17
VKG902 SunClass Airlines 2 2026-04-13
VKG562 - 2 2026-05-16
VKG481 - 2 2026-05-06
VKG4579 - 2 2026-05-06
VKG4455 - 2 2026-04-17
VKG432 SunClass Airlines 2 2026-04-18
VKG270 - 2 2026-05-03
VKG045 - 2 2026-05-11
VKG036 - 2 2026-05-18
VKG018 - 2 2026-04-17
VKG806 - 1 2026-04-18
VKG803 SunClass Airlines 1 2026-04-25
VKG802 SunClass Airlines 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-18 VKG4994 CPH → CPH May 18, 15:30 UTCMay 18, 16:45 UTC1h 15m
2026-05-18 VKG037 - May 18, 10:50 UTCMay 18, 14:00 UTC3h 10m
2026-05-18 VKG036 - May 18, 06:01 UTCMay 18, 09:05 UTC3h 5m
2026-05-16 VKG543 - May 16, 21:00 UTCMay 17, 00:45 UTC3h 45m
2026-05-16 VKG562 - May 16, 15:45 UTCMay 16, 19:20 UTC3h 35m
2026-05-15 VKG4185 - May 15, 20:45 UTCMay 16, 00:35 UTC3h 50m
2026-05-15 VKG184 LPA → ARN May 15, 16:45 UTCMay 15, 19:50 UTC3h 5m
2026-05-15 VKG4184 - May 15, 14:30 UTCMay 15, 15:05 UTC34m
2026-05-15 VKG061 - May 15, 10:20 UTCMay 15, 13:15 UTC2h 55m
2026-05-15 VKG616 GOT → BJL May 15, 05:10 UTCMay 15, 08:55 UTC3h 45m
2026-05-14 VKG525 - May 14, 11:01 UTCMay 14, 14:45 UTC3h 45m
2026-05-14 VKG512 ARN → AYT May 14, 05:20 UTCMay 14, 09:00 UTC3h 40m
2026-05-14 VKG4529 - May 14, 01:40 UTCMay 14, 02:25 UTC45m
2026-05-13 VKG429 - May 13, 20:40 UTCMay 14, 00:30 UTC3h 50m
2026-05-13 VKG470 - May 13, 15:45 UTCMay 13, 19:20 UTC3h 35m
2026-05-13 VKG471 - May 13, 10:35 UTCMay 13, 14:05 UTC3h 30m
2026-05-13 VKG574 - May 13, 04:55 UTCMay 13, 08:45 UTC3h 50m
2026-05-12 VKG4549 - May 12, 22:20 UTCMay 12, 23:15 UTC55m
2026-05-12 VKG049 - May 12, 18:35 UTCMay 12, 21:10 UTC2h 35m
2026-05-12 VKG128 - May 12, 14:35 UTCMay 12, 16:55 UTC2h 20m
2026-05-12 VKG129 - May 12, 09:55 UTCMay 12, 12:30 UTC2h 35m
2026-05-12 VKG046 - May 12, 05:10 UTCMay 12, 08:20 UTC3h 10m
2026-05-12 VKG051 - May 12, 02:45 UTCMay 12, 03:15 UTC30m
2026-05-11 VKG045 OSL → LCA May 11, 16:45 UTCMay 11, 21:00 UTC4h 16m
2026-05-11 VKG4037 GOT → PMI May 11, 10:55 UTCMay 11, 14:10 UTC3h 15m
2026-05-11 VKG036 - May 11, 06:20 UTCMay 11, 09:20 UTC3h 0m
2026-05-09 VKG4461 - May 9, 20:30 UTCMay 10, 00:34 UTC4h 5m
2026-05-09 VKG562 - May 9, 15:20 UTCMay 9, 18:55 UTC3h 35m
2026-05-09 VKG4905 - May 9, 12:20 UTCMay 9, 13:15 UTC55m
2026-05-08 VKG105 - May 8, 13:50 UTCMay 8, 18:00 UTC4h 10m
2026-05-08 VKG108 LCA → ARN May 8, 07:09 UTCMay 8, 11:55 UTC4h 45m
2026-05-07 VKG4901 - May 7, 17:50 UTCMay 7, 18:45 UTC55m
2026-05-07 VKG525 - May 7, 10:50 UTCMay 7, 14:35 UTC3h 45m
2026-05-07 VKG512 ARN → AYT May 7, 05:15 UTCMay 7, 09:00 UTC3h 45m
2026-05-06 VKG4579 - May 6, 15:05 UTCMay 6, 16:00 UTC55m
2026-05-06 VKG481 - May 6, 10:35 UTCMay 6, 14:00 UTC3h 25m
2026-05-06 VKG030 - May 6, 06:00 UTCMay 6, 08:55 UTC2h 55m
2026-05-06 VKG4530 TRD → CPH May 6, 04:35 UTCMay 6, 04:50 UTC15m
2026-05-05 VKG133 - May 5, 20:20 UTCMay 5, 22:45 UTC2h 25m
2026-05-05 VKG422 PMI → CPH May 5, 14:55 UTCMay 5, 18:20 UTC3h 25m
2026-05-05 VKG425 CPH → PMI May 5, 10:10 UTCMay 5, 13:15 UTC3h 5m
2026-05-05 VKG277 GOT → HER May 5, 05:25 UTCMay 5, 08:15 UTC2h 50m
2026-05-04 VKG293 - May 4, 11:15 UTCMay 4, 15:20 UTC4h 5m
2026-05-04 VKG288 - May 4, 05:25 UTCMay 4, 09:10 UTC3h 45m
2026-05-03 VKG274 RHO → BLL May 3, 21:24 UTCMay 4, 00:55 UTC3h 30m
2026-05-03 VKG412 CPH → AYT May 3, 16:15 UTCMay 3, 19:50 UTC3h 35m
2026-05-03 VKG413 AYT → CPH May 3, 09:50 UTCMay 3, 13:40 UTC3h 50m
2026-05-03 VKG270 - May 3, 05:25 UTCMay 3, 08:20 UTC2h 55m
2026-05-03 VKG270 - May 3, 04:50 UTCMay 3, 05:20 UTC30m
2026-05-02 VKG255 - May 2, 19:35 UTCMay 2, 22:55 UTC3h 20m

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

Mode-S 45D068 frequently asked

What is Mode-S code 45D068?
45D068 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-TCH.
Where is Mode-S 45D068 registered?
Mode-S code 45D068 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45D068 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45D068, octal 21350150, decimal 4,575,336.
What flights does 45D068 operate?
Mode-S 45D068 has broadcast 20 distinct callsigns, including VKG687, VKG525, VKG512, VKG4985, VKG459.