Apparatus

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sensors Mode-S transponder

45CF22

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-SYB · BOEING 767-300

Hex
45CF22
Octal
21347442
Decimal
4,575,010
Country
DK
Tail
OY-SYB
Type
B763
No current signal · last broadcast Jul 24, 22:20 UTC
Flights observed
244
Distinct callsigns
14
Country
DK
Last broadcast
Jul 24, 22:20 UTC

Last known position

Most recent position reported by Mode-S 45CF22.

Country allocation

The ICAO 24-bit address 45CF22 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 14 distinct

Callsign Airline Flights Last seen
SRR6498 Star Air 79 2026-07-21
SRR6497 Star Air 45 2026-07-21
UPS292 - 24 2026-06-15
UPS291 - 23 2026-06-15
SRR6402 Star Air 14 2026-07-24
SRR6401 Star Air 14 2026-07-24
SRR6373 - 11 2026-06-18
SRR6374 - 10 2026-06-18
SRR6316 - 8 2026-06-26
SRR6315 - 8 2026-06-26
UPS275 United Parcel Service 2 2026-04-30
UPS274 United Parcel Service 2 2026-04-30
SRR6119 Star Air 2 2026-04-24
SRR6118 Star Air 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 SRR6401 AOI → CGN Jul 24, 21:20 UTCJul 24, 22:20 UTC1h 0m
2026-07-24 SRR6401 AOI → CGN Jul 24, 18:20 UTCJul 24, 19:15 UTC55m
2026-07-24 SRR6402 CGN → AOI Jul 24, 04:25 UTCJul 24, 05:00 UTC35m
2026-07-24 SRR6402 CGN → AOI Jul 24, 01:00 UTCJul 24, 01:50 UTC50m
2026-07-23 SRR6401 AOI → CGN Jul 23, 21:30 UTCJul 23, 22:35 UTC1h 5m
2026-07-23 SRR6401 AOI → CGN Jul 23, 18:30 UTCJul 23, 19:10 UTC40m
2026-07-23 SRR6402 CGN → AOI Jul 23, 04:25 UTCJul 23, 05:00 UTC35m
2026-07-23 SRR6402 CGN → AOI Jul 23, 01:00 UTCJul 23, 01:55 UTC55m
2026-07-22 SRR6401 AOI → CGN Jul 22, 21:35 UTCJul 22, 22:45 UTC1h 10m
2026-07-22 SRR6401 AOI → CGN Jul 22, 18:30 UTCJul 22, 19:10 UTC40m
2026-07-22 SRR6402 CGN → AOI Jul 22, 04:30 UTCJul 22, 05:00 UTC30m
2026-07-22 SRR6402 CGN → AOI Jul 22, 00:55 UTCJul 22, 01:50 UTC55m
2026-07-21 SRR6497 BLQ → CGN Jul 21, 21:50 UTCJul 21, 22:55 UTC1h 5m
2026-07-21 SRR6497 BLQ → CGN Jul 21, 20:15 UTCJul 21, 20:45 UTC30m
2026-07-21 SRR6498 CGN → BLQ Jul 21, 04:30 UTCJul 21, 04:55 UTC25m
2026-07-21 SRR6498 CGN → BLQ Jul 21, 02:10 UTCJul 21, 03:10 UTC1h 0m
2026-07-20 SRR6497 BLQ → CGN Jul 20, 20:30 UTCJul 20, 21:45 UTC1h 15m
2026-07-20 SRR6498 CGN → BLQ Jul 20, 02:55 UTCJul 20, 03:25 UTC30m
2026-07-20 SRR6498 CGN → BLQ Jul 20, 00:00 UTCJul 20, 01:00 UTC1h 0m
2026-07-17 SRR6497 BLQ → CGN Jul 17, 20:29 UTCJul 17, 21:55 UTC1h 25m
2026-07-17 SRR6498 CGN → BLQ Jul 17, 05:35 UTCJul 17, 06:05 UTC30m
2026-07-17 SRR6498 CGN → BLQ Jul 17, 02:10 UTCJul 17, 03:10 UTC1h 0m
2026-07-16 SRR6497 BLQ → CGN Jul 16, 21:00 UTCJul 16, 22:25 UTC1h 25m
2026-07-16 SRR6498 BGY → BLQ Jul 16, 04:30 UTCJul 16, 04:55 UTC25m
2026-07-16 SRR6498 - Jul 16, 02:15 UTCJul 16, 03:15 UTC1h 0m
2026-07-15 SRR6497 - Jul 15, 21:45 UTCJul 15, 23:20 UTC1h 35m
2026-07-15 SRR6498 - Jul 15, 04:20 UTCJul 15, 04:45 UTC25m
2026-07-15 SRR6498 - Jul 15, 02:00 UTCJul 15, 03:00 UTC1h 0m
2026-07-14 SRR6497 - Jul 14, 20:10 UTCJul 14, 21:25 UTC1h 15m
2026-07-14 SRR6498 - Jul 14, 04:25 UTCJul 14, 04:55 UTC30m
2026-07-14 SRR6498 - Jul 14, 02:20 UTCJul 14, 03:20 UTC1h 0m
2026-07-13 SRR6497 - Jul 13, 20:10 UTCJul 13, 21:20 UTC1h 10m
2026-07-13 SRR6498 - Jul 13, 02:25 UTCJul 13, 02:50 UTC25m
2026-07-12 SRR6498 - Jul 12, 23:55 UTCJul 13, 00:50 UTC55m
2026-07-10 SRR6497 - Jul 10, 20:40 UTCJul 10, 21:50 UTC1h 10m
2026-07-10 SRR6498 - Jul 10, 04:40 UTCJul 10, 05:05 UTC25m
2026-07-10 SRR6498 CGN → BGY Jul 10, 02:20 UTCJul 10, 03:15 UTC55m
2026-07-09 SRR6401 - Jul 9, 21:40 UTCJul 9, 22:45 UTC1h 5m
2026-07-09 SRR6401 - Jul 9, 18:25 UTCJul 9, 19:05 UTC40m
2026-07-09 SRR6402 - Jul 9, 04:25 UTCJul 9, 05:05 UTC40m
2026-07-09 SRR6402 CGN → BGY Jul 9, 00:45 UTCJul 9, 01:45 UTC1h 0m
2026-07-08 SRR6497 - Jul 8, 20:20 UTCJul 8, 21:30 UTC1h 10m
2026-07-08 SRR6498 BGY → BLQ Jul 8, 04:30 UTCJul 8, 05:00 UTC30m
2026-07-08 SRR6498 - Jul 8, 02:20 UTCJul 8, 03:15 UTC55m
2026-07-07 SRR6401 - Jul 7, 21:20 UTCJul 7, 22:20 UTC1h 0m
2026-07-07 SRR6401 - Jul 7, 18:25 UTCJul 7, 19:00 UTC35m
2026-07-07 SRR6402 - Jul 7, 04:30 UTCJul 7, 05:10 UTC40m
2026-07-07 SRR6402 - Jul 7, 00:50 UTCJul 7, 01:50 UTC1h 0m
2026-07-06 SRR6497 - Jul 6, 20:05 UTCJul 6, 21:10 UTC1h 5m
2026-07-06 SRR6498 - Jul 6, 02:30 UTCJul 6, 02:50 UTC20m

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

Mode-S 45CF22 frequently asked

What is Mode-S code 45CF22?
45CF22 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-SYB.
Where is Mode-S 45CF22 registered?
Mode-S code 45CF22 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45CF22 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45CF22, octal 21347442, decimal 4,575,010.
What flights does 45CF22 operate?
Mode-S 45CF22 has broadcast 14 distinct callsigns, including SRR6498, SRR6497, UPS292, UPS291, SRR6402.