Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

45CE46

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-SRF · BOEING 767-200

Hex
45CE46
Octal
21347106
Decimal
4,574,790
Country
DK
Tail
OY-SRF
Type
B762
No current signal · last broadcast 1d ago
Flights observed
93
Distinct callsigns
15
Country
DK
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 45CE46.

Country allocation

The ICAO 24-bit address 45CE46 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 15 distinct

Callsign Airline Flights Last seen
SRR6382 Star Air 17 2026-05-07
SRR6381 Star Air 17 2026-05-07
SRR1BL - 14 2026-05-21
SRR2BL - 11 2026-05-20
SRR4084 - 10 2026-05-29
SRR4184 - 9 2026-05-28
SRR6498 Star Air 4 2026-04-30
SRR6497 Star Air 2 2026-04-30
SRR6119 Star Air 2 2026-04-27
SRR6118 Star Air 2 2026-04-27
UPS275 United Parcel Service 1 2026-04-28
UPS274 United Parcel Service 1 2026-04-28
SRR9102 - 1 2026-05-10
SRR9081 - 1 2026-05-08
SR6381 - 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SRR4084 CGN → BLL May 29, 03:45 UTCMay 29, 04:45 UTC1h 0m
2026-05-29 SRR4084 - May 29, 01:55 UTCMay 29, 02:40 UTC45m
2026-05-28 SRR4184 HAJ → CDG May 28, 21:25 UTCMay 28, 22:30 UTC1h 5m
2026-05-28 SRR4184 - May 28, 19:35 UTCMay 28, 20:15 UTC40m
2026-05-28 SRR4084 CGN → BLL May 28, 03:55 UTCMay 28, 04:50 UTC55m
2026-05-28 SRR4084 - May 28, 01:50 UTCMay 28, 02:30 UTC40m
2026-05-27 SRR4184 HAJ → CDG May 27, 21:35 UTCMay 27, 22:40 UTC1h 5m
2026-05-27 SRR4184 - May 27, 19:20 UTCMay 27, 20:00 UTC40m
2026-05-27 SRR4084 CGN → BLL May 27, 03:50 UTCMay 27, 04:45 UTC55m
2026-05-27 SRR4084 CDG → CGN May 27, 02:04 UTCMay 27, 02:44 UTC40m
2026-05-26 SRR4184 HAJ → CDG May 26, 21:29 UTCMay 26, 22:35 UTC1h 5m
2026-05-26 SRR4184 BLL → HAJ May 26, 19:15 UTCMay 26, 20:00 UTC45m
2026-05-26 SRR4084 CGN → BLL May 26, 03:40 UTCMay 26, 04:35 UTC55m
2026-05-26 SRR4084 CDG → CGN May 26, 02:00 UTCMay 26, 02:44 UTC45m
2026-05-25 SRR4184 - May 25, 20:50 UTCMay 25, 22:15 UTC1h 25m
2026-05-22 SRR4084 CGN → BLL May 22, 04:00 UTCMay 22, 05:00 UTC1h 0m
2026-05-22 SRR4084 - May 22, 01:45 UTCMay 22, 02:30 UTC45m
2026-05-21 SRR4184 HAJ → CDG May 21, 21:45 UTCMay 21, 22:50 UTC1h 5m
2026-05-21 SRR4184 - May 21, 19:15 UTCMay 21, 19:55 UTC40m
2026-05-21 SRR1BL CGN → BLL May 21, 03:55 UTCMay 21, 04:55 UTC1h 0m
2026-05-21 SRR1BL - May 21, 01:55 UTCMay 21, 02:40 UTC45m
2026-05-20 SRR2BL - May 20, 21:15 UTCMay 20, 22:35 UTC1h 20m
2026-05-20 SRR1BL CGN → BLL May 20, 04:10 UTCMay 20, 05:00 UTC51m
2026-05-20 SRR1BL CDG → CGN May 20, 02:05 UTCMay 20, 02:50 UTC45m
2026-05-19 SRR2BL HAJ → CDG May 19, 21:35 UTCMay 19, 22:45 UTC1h 10m
2026-05-19 SRR2BL - May 19, 19:20 UTCMay 19, 20:05 UTC45m
2026-05-19 SRR1BL CGN → BLL May 19, 03:55 UTCMay 19, 04:45 UTC50m
2026-05-19 SRR1BL CDG → CGN May 19, 02:10 UTCMay 19, 02:50 UTC40m
2026-05-18 SRR2BL HAJ → CDG May 18, 21:45 UTCMay 18, 22:45 UTC1h 0m
2026-05-18 SRR2BL - May 18, 19:30 UTCMay 18, 20:20 UTC50m
2026-05-15 SRR1BL CGN → BLL May 15, 03:55 UTCMay 15, 04:50 UTC55m
2026-05-15 SRR1BL - May 15, 02:15 UTCMay 15, 02:55 UTC40m
2026-05-14 SRR1BL CGN → CDG May 14, 04:20 UTCMay 14, 05:05 UTC45m
2026-05-14 SRR1BL - May 14, 02:15 UTCMay 14, 02:55 UTC40m
2026-05-13 SRR2BL - May 13, 21:40 UTCMay 13, 22:45 UTC1h 5m
2026-05-13 SRR2BL - May 13, 19:20 UTCMay 13, 20:05 UTC45m
2026-05-13 SRR1BL CGN → BLL May 13, 04:10 UTCMay 13, 05:05 UTC55m
2026-05-13 SRR1BL CDG → CGN May 13, 02:05 UTCMay 13, 02:50 UTC45m
2026-05-12 SRR2BL HAJ → CDG May 12, 21:40 UTCMay 12, 22:45 UTC1h 5m
2026-05-12 SRR2BL - May 12, 19:50 UTCMay 12, 20:35 UTC45m
2026-05-12 SRR1BL CGN → BLL May 12, 04:00 UTCMay 12, 05:00 UTC1h 0m
2026-05-12 SRR1BL - May 12, 02:45 UTCMay 12, 02:50 UTC5m
2026-05-11 SRR2BL - May 11, 21:20 UTCMay 11, 22:35 UTC1h 14m
2026-05-11 SRR2BL - May 11, 19:15 UTCMay 11, 19:55 UTC40m
2026-05-10 SRR9102 - May 10, 19:00 UTCMay 10, 20:30 UTC1h 30m
2026-05-08 SRR9081 - May 8, 04:04 UTCMay 8, 05:39 UTC1h 35m
2026-05-07 SRR6381 MRS → CGN May 7, 20:25 UTCMay 7, 21:45 UTC1h 20m
2026-05-07 SRR6382 CGN → BOD May 7, 01:55 UTCMay 7, 03:10 UTC1h 15m
2026-05-06 SRR6381 MRS → CGN May 6, 20:30 UTCMay 6, 21:50 UTC1h 20m
2026-05-06 SRR6382 CGN → BOD May 6, 01:55 UTCMay 6, 03:20 UTC1h 25m

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

Mode-S 45CE46 frequently asked

What is Mode-S code 45CE46?
45CE46 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-SRF.
Where is Mode-S 45CE46 registered?
Mode-S code 45CE46 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45CE46 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45CE46, octal 21347106, decimal 4,574,790.
What flights does 45CE46 operate?
Mode-S 45CE46 has broadcast 15 distinct callsigns, including SRR6382, SRR6381, SRR1BL, SRR2BL, SRR4084.