Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 7h ago
Flights observed
107
Distinct callsigns
14
Country
DK
Last broadcast
7h ago

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 47 2026-05-29
SRR6497 Star Air 28 2026-05-29
SRR6374 Star Air 6 2026-05-13
SRR6373 Star Air 6 2026-05-13
UPS292 United Parcel Service 2 2026-05-28
UPS291 United Parcel Service 2 2026-05-28
UPS275 United Parcel Service 2 2026-04-30
UPS274 United Parcel Service 2 2026-04-30
SRR6402 Star Air 2 2026-05-27
SRR6401 Star Air 2 2026-05-27
SRR6316 Star Air 2 2026-04-20
SRR6315 Star Air 2 2026-04-20
SRR6119 Star Air 2 2026-04-24
SRR6118 Star Air 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SRR6497 BLQ → CGN May 29, 20:30 UTCMay 29, 21:40 UTC1h 10m
2026-05-29 SRR6498 CGN → BLQ May 29, 04:15 UTCMay 29, 04:45 UTC30m
2026-05-29 SRR6498 CGN → BLQ May 29, 02:05 UTCMay 29, 03:05 UTC1h 0m
2026-05-28 UPS291 ARN → HEL May 28, 21:50 UTCMay 28, 23:15 UTC1h 25m
2026-05-28 UPS291 ARN → HEL May 28, 19:15 UTCMay 28, 20:30 UTC1h 15m
2026-05-28 UPS292 CGN → HEL May 28, 04:05 UTCMay 28, 05:20 UTC1h 15m
2026-05-28 UPS292 CGN → HEL May 28, 02:00 UTCMay 28, 03:00 UTC1h 0m
2026-05-27 SRR6401 AOI → CGN May 27, 21:10 UTCMay 27, 22:25 UTC1h 15m
2026-05-27 SRR6401 AOI → CGN May 27, 18:30 UTCMay 27, 19:10 UTC40m
2026-05-27 SRR6402 CGN → AOI May 27, 05:14 UTCMay 27, 05:55 UTC40m
2026-05-27 SRR6402 CGN → AOI May 27, 00:49 UTCMay 27, 01:49 UTC1h 0m
2026-05-26 SRR6497 BLQ → CGN May 26, 20:15 UTCMay 26, 21:25 UTC1h 10m
2026-05-26 SRR6498 CGN → BLQ May 26, 04:04 UTCMay 26, 04:35 UTC30m
2026-05-26 SRR6498 CGN → BLQ May 26, 02:00 UTCMay 26, 03:00 UTC1h 0m
2026-05-25 SRR6497 BLQ → CGN May 25, 20:09 UTCMay 25, 21:19 UTC1h 10m
2026-05-25 SRR6498 CGN → BLQ May 25, 02:25 UTCMay 25, 02:50 UTC25m
2026-05-22 SRR6497 BLQ → CGN May 22, 20:30 UTCMay 22, 21:45 UTC1h 15m
2026-05-22 SRR6498 CGN → BLQ May 22, 04:20 UTCMay 22, 04:45 UTC25m
2026-05-22 SRR6498 CGN → BLQ May 22, 02:15 UTCMay 22, 03:15 UTC1h 0m
2026-05-21 SRR6497 BLQ → CGN May 21, 20:20 UTCMay 21, 21:30 UTC1h 10m
2026-05-21 SRR6498 CGN → BLQ May 21, 04:15 UTCMay 21, 04:45 UTC30m
2026-05-21 SRR6498 CGN → BLQ May 21, 02:10 UTCMay 21, 03:00 UTC50m
2026-05-20 SRR6497 BLQ → CGN May 20, 20:10 UTCMay 20, 21:20 UTC1h 10m
2026-05-20 SRR6498 CGN → BLQ May 20, 04:20 UTCMay 20, 04:50 UTC31m
2026-05-20 SRR6498 CGN → BLQ May 20, 02:10 UTCMay 20, 03:10 UTC1h 0m
2026-05-19 SRR6497 BLQ → CGN May 19, 20:05 UTCMay 19, 21:15 UTC1h 10m
2026-05-19 SRR6498 CGN → BLQ May 19, 04:15 UTCMay 19, 04:45 UTC30m
2026-05-19 SRR6498 CGN → BLQ May 19, 02:05 UTCMay 19, 03:05 UTC1h 0m
2026-05-18 SRR6497 BLQ → CGN May 18, 20:15 UTCMay 18, 21:30 UTC1h 15m
2026-05-18 SRR6498 CGN → BLQ May 18, 02:40 UTCMay 18, 03:01 UTC20m
2026-05-17 SRR6498 CGN → BLQ May 17, 23:55 UTCMay 18, 00:55 UTC1h 0m
2026-05-15 SRR6497 BLQ → CGN May 15, 20:25 UTCMay 15, 21:30 UTC1h 5m
2026-05-15 SRR6498 CGN → BLQ May 15, 04:05 UTCMay 15, 04:40 UTC35m
2026-05-15 SRR6498 CGN → BLQ May 15, 02:05 UTCMay 15, 03:05 UTC1h 0m
2026-05-14 SRR6497 BLQ → CGN May 14, 20:15 UTCMay 14, 21:15 UTC1h 0m
2026-05-14 SRR6498 CGN → BLQ May 14, 04:30 UTCMay 14, 05:00 UTC30m
2026-05-14 SRR6498 CGN → BLQ May 14, 02:05 UTCMay 14, 03:10 UTC1h 5m
2026-05-13 SRR6373 TLS → CGN May 13, 20:20 UTCMay 13, 21:25 UTC1h 5m
2026-05-13 SRR6373 TLS → CGN May 13, 18:35 UTCMay 13, 19:10 UTC35m
2026-05-13 SRR6374 CGN → TLS May 13, 16:20 UTCMay 13, 17:05 UTC45m
2026-05-13 SRR6374 CGN → TLS May 13, 01:55 UTCMay 13, 02:50 UTC55m
2026-05-12 SRR6497 BLQ → CGN May 12, 20:25 UTCMay 12, 21:35 UTC1h 10m
2026-05-12 SRR6498 CGN → BLQ May 12, 04:25 UTCMay 12, 04:55 UTC30m
2026-05-12 SRR6498 CGN → BLQ May 12, 02:45 UTCMay 12, 03:15 UTC30m
2026-05-11 SRR6497 BLQ → CGN May 11, 20:20 UTCMay 11, 21:25 UTC1h 5m
2026-05-11 SRR6498 CGN → BLQ May 11, 03:10 UTCMay 11, 03:35 UTC25m
2026-05-11 SRR6498 CGN → BLQ May 11, 00:00 UTCMay 11, 01:05 UTC1h 5m
2026-05-08 SRR6497 BLQ → CGN May 8, 20:30 UTCMay 8, 21:35 UTC1h 5m
2026-05-08 SRR6498 CGN → BLQ May 8, 04:19 UTCMay 8, 04:44 UTC25m
2026-05-08 SRR6498 CGN → BLQ May 8, 02:04 UTCMay 8, 03:04 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-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 7h ago.
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, SRR6374, SRR6373, UPS292.