sensors Mode-S transponder

45D96F

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-VKO · AIRBUS A-330-900

Hex
45D96F
Octal
21354557
Decimal
4,577,647
Country
DK
Tail
OY-VKO
Type
A339
No current signal · last broadcast 20h ago
Flights observed
9
Distinct callsigns
4
Country
DK
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 45D96F.

Country allocation

The ICAO 24-bit address 45D96F 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 4 distinct

Callsign Airline Flights Last seen
VKG633 - 3 2026-04-13
VKG632 - 3 2026-04-13
VKG4072 - 2 2026-04-14
VKG817 - 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 VKG4072 - Apr 14, 05:15 UTCApr 14, 05:50 UTC35m
2026-04-13 VKG4072 - Apr 13, 20:10 UTCApr 13, 22:50 UTC2h 40m
2026-04-13 VKG633 - Apr 13, 16:15 UTCApr 13, 17:45 UTC1h 30m
2026-04-13 VKG633 - Apr 13, 15:50 UTCApr 13, 17:45 UTC1h 55m
2026-04-13 VKG633 - Apr 13, 13:25 UTCApr 13, 16:15 UTC2h 50m
2026-04-13 VKG632 - Apr 13, 08:20 UTCApr 13, 11:25 UTC3h 5m
2026-04-13 VKG632 - Apr 13, 07:55 UTCApr 13, 11:25 UTC3h 30m
2026-04-13 VKG632 - Apr 13, 07:35 UTCApr 13, 08:15 UTC40m
2026-04-12 VKG817 - Apr 12, 17:15 UTCApr 12, 18:45 UTC1h 30m

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

Mode-S 45D96F frequently asked

What is Mode-S code 45D96F?
45D96F is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-VKO.
Where is Mode-S 45D96F registered?
Mode-S code 45D96F is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45D96F broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45D96F, octal 21354557, decimal 4,577,647.
What flights does 45D96F operate?
Mode-S 45D96F has broadcast 4 distinct callsigns, including VKG633, VKG632, VKG4072, VKG817.