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sensors Mode-S transponder

45D961

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-VKA · AIRBUS A-321neo

Hex
45D961
Octal
21354541
Decimal
4,577,633
Country
DK
Tail
OY-VKA
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
354
Distinct callsigns
20
Country
DK
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 45D961.

Country allocation

The ICAO 24-bit address 45D961 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
VKG064 - 6 2026-07-10
VKG059 - 6 2026-07-10
VKG534 - 5 2026-06-28
VKG516 SunClass Airlines 5 2026-05-23
VKG1070 SunClass Airlines 5 2026-07-13
VKG067 - 5 2026-07-13
VKG065 - 5 2026-07-13
VKG954 - 4 2026-05-14
VKG808 - 4 2026-07-14
VKG725 - 4 2026-04-16
VKG360 - 4 2026-05-26
VKG309 - 4 2026-05-04
VKG124 - 4 2026-04-20
VKG1071 SunClass Airlines 4 2026-07-13
VKG041 - 4 2026-06-28
VKG040 - 4 2026-06-28
VKG039 - 4 2026-07-09
VKG038 - 4 2026-07-09
VKG025 - 4 2026-07-11
VKG024 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 VKG811 - Jul 14, 22:15 UTCJul 15, 02:05 UTC3h 49m
2026-07-14 VKG810 OSL → AYT Jul 14, 17:05 UTCJul 14, 20:50 UTC3h 45m
2026-07-14 VKG809 - Jul 14, 10:30 UTCJul 14, 14:25 UTC3h 55m
2026-07-14 VKG808 OSL → AYT Jul 14, 04:55 UTCJul 14, 08:50 UTC3h 55m
2026-07-14 VKG4571 - Jul 14, 01:40 UTCJul 14, 02:15 UTC35m
2026-07-13 VKG1071 VAR → SVG Jul 13, 21:35 UTCJul 14, 00:35 UTC3h 0m
2026-07-13 VKG1070 SVG → VAR Jul 13, 17:05 UTCJul 13, 20:00 UTC2h 55m
2026-07-13 VKG065 LCA → SVG Jul 13, 11:05 UTCJul 13, 15:25 UTC4h 20m
2026-07-13 VKG067 - Jul 13, 05:05 UTCJul 13, 09:20 UTC4h 15m
2026-07-13 VKG4903 CPH → SVG Jul 13, 00:35 UTCJul 13, 01:25 UTC50m
2026-07-12 VKG4902 - Jul 12, 03:40 UTCJul 12, 04:30 UTC50m
2026-07-11 VKG025 - Jul 11, 22:40 UTCJul 12, 02:35 UTC3h 55m
2026-07-11 VKG024 - Jul 11, 17:30 UTCJul 11, 21:05 UTC3h 35m
2026-07-11 VKG777 - Jul 11, 11:15 UTCJul 11, 15:25 UTC4h 10m
2026-07-11 VKG776 - Jul 11, 05:20 UTCJul 11, 09:10 UTC3h 50m
2026-07-10 VKG091 - Jul 10, 20:55 UTCJul 10, 23:45 UTC2h 50m
2026-07-10 VKG088 - Jul 10, 16:10 UTCJul 10, 19:00 UTC2h 50m
2026-07-10 VKG059 - Jul 10, 11:25 UTCJul 10, 14:25 UTC3h 0m
2026-07-10 VKG064 - Jul 10, 06:40 UTCJul 10, 09:35 UTC2h 55m
2026-07-10 VKG4556 - Jul 10, 03:55 UTCJul 10, 04:50 UTC55m
2026-07-09 VKG039 - Jul 9, 22:15 UTCJul 10, 02:45 UTC4h 30m
2026-07-09 VKG598 - Jul 9, 17:25 UTCJul 9, 20:35 UTC3h 10m
2026-07-09 VKG601 - Jul 9, 11:00 UTCJul 9, 15:00 UTC4h 0m
2026-07-09 VKG038 - Jul 9, 05:45 UTCJul 9, 09:20 UTC3h 35m
2026-07-08 VKG1023 VAR → TRD Jul 8, 21:35 UTCJul 9, 01:10 UTC3h 35m
2026-07-08 VKG1022 TRD → VAR Jul 8, 17:10 UTCJul 8, 20:05 UTC2h 55m
2026-07-08 VKG013 RHO → TRD Jul 8, 11:10 UTCJul 8, 15:50 UTC4h 40m
2026-07-08 VKG012 TRD → RHO Jul 8, 05:00 UTCJul 8, 08:55 UTC3h 55m
2026-07-07 VKG773 - Jul 7, 22:00 UTCJul 8, 02:25 UTC4h 25m
2026-07-07 VKG772 - Jul 7, 16:30 UTCJul 7, 20:30 UTC4h 0m
2026-07-07 VKG015 - Jul 7, 10:45 UTCJul 7, 14:35 UTC3h 50m
2026-07-07 VKG014 - Jul 7, 05:15 UTCJul 7, 08:35 UTC3h 20m
2026-07-06 VKG069 - Jul 6, 12:45 UTCJul 6, 17:45 UTC5h 0m
2026-07-06 VKG068 - Jul 6, 06:40 UTCJul 6, 11:05 UTC4h 25m
2026-07-06 VKG4545 BGO → TRD Jul 6, 02:20 UTCJul 6, 03:00 UTC40m
2026-07-05 VKG1545 - Jul 5, 21:50 UTCJul 6, 01:15 UTC3h 25m
2026-07-05 VKG1544 - Jul 5, 17:15 UTCJul 5, 20:05 UTC2h 50m
2026-07-05 VKG735 - Jul 5, 10:45 UTCJul 5, 15:20 UTC4h 35m
2026-07-05 VKG734 - Jul 5, 05:20 UTCJul 5, 09:05 UTC3h 45m
2026-07-04 VKG063 - Jul 4, 21:20 UTCJul 5, 00:35 UTC3h 15m
2026-07-04 VKG016 - Jul 4, 16:45 UTCJul 4, 19:45 UTC3h 0m
2026-07-04 VKG585 - Jul 4, 10:50 UTCJul 4, 15:15 UTC4h 25m
2026-07-04 VKG584 - Jul 4, 05:10 UTCJul 4, 08:50 UTC3h 40m
2026-07-03 VKG017 - Jul 3, 23:00 UTCJul 4, 02:20 UTC3h 20m
2026-07-03 VKG018 - Jul 3, 18:15 UTCJul 3, 21:10 UTC2h 55m
2026-07-03 VKG027 LCA → BGO Jul 3, 11:55 UTCJul 3, 16:40 UTC4h 45m
2026-07-03 VKG026 - Jul 3, 05:45 UTCJul 3, 10:05 UTC4h 20m
2026-07-03 VKG4920 - Jul 3, 03:35 UTCJul 3, 04:10 UTC35m
2026-07-02 VKG805 AYT → OSL Jul 2, 22:10 UTCJul 3, 02:00 UTC3h 50m
2026-07-02 VKG804 OSL → AYT Jul 2, 16:45 UTCJul 2, 20:35 UTC3h 50m

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

Mode-S 45D961 frequently asked

What is Mode-S code 45D961?
45D961 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-VKA.
Where is Mode-S 45D961 registered?
Mode-S code 45D961 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45D961 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45D961, octal 21354541, decimal 4,577,633.
What flights does 45D961 operate?
Mode-S 45D961 has broadcast 20 distinct callsigns, including VKG064, VKG059, VKG534, VKG516, VKG1070.