Apparatus

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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 6d ago
Flights observed
149
Distinct callsigns
20
Country
DK
Last broadcast
6d 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 20 distinct

Callsign Airline Flights Last seen
SRR7992 Star Air 19 2026-06-26
SRR7993 Star Air 18 2026-06-26
SRR6382 - 18 2026-07-02
SRR6381 - 18 2026-07-02
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
SRR6228 - 4 2026-07-06
SRR6227 - 4 2026-07-06
SRR760 - 2 2026-06-26
SRR6646 - 2 2026-07-07
SRR6645 - 2 2026-07-07
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-07 SRR6645 OPO → CGN Jul 7, 20:25 UTCJul 7, 22:40 UTC2h 15m
2026-07-07 SRR6645 LIS → OPO Jul 7, 18:35 UTCJul 7, 19:05 UTC30m
2026-07-07 SRR6646 OPO → LIS Jul 7, 05:40 UTCJul 7, 06:25 UTC45m
2026-07-07 SRR6646 CGN → OPO Jul 7, 02:10 UTCJul 7, 04:20 UTC2h 10m
2026-07-06 SRR6227 BER → CGN Jul 6, 21:15 UTCJul 6, 22:10 UTC55m
2026-07-06 SRR6228 CGN → BER Jul 6, 02:45 UTCJul 6, 03:35 UTC50m
2026-07-03 SRR6227 BER → CGN Jul 3, 21:10 UTCJul 3, 22:10 UTC1h 0m
2026-07-03 SRR6228 CGN → BER Jul 3, 02:50 UTCJul 3, 03:40 UTC50m
2026-07-02 SRR6381 - Jul 2, 20:20 UTCJul 2, 21:45 UTC1h 25m
2026-07-02 SRR6382 - Jul 2, 01:55 UTCJul 2, 03:10 UTC1h 15m
2026-07-01 SRR6227 BER → CGN Jul 1, 21:15 UTCJul 1, 22:05 UTC50m
2026-07-01 SRR6228 CGN → BER Jul 1, 03:00 UTCJul 1, 03:40 UTC40m
2026-06-30 SRR6227 BER → CGN Jun 30, 21:15 UTCJun 30, 22:15 UTC1h 0m
2026-06-30 SRR6228 CGN → BER Jun 30, 02:50 UTCJun 30, 03:35 UTC45m
2026-06-26 SRR760 LEJ → CGN Jun 26, 23:30 UTCJun 27, 00:10 UTC40m
2026-06-26 SRR7993 VCE → LEJ Jun 26, 20:55 UTCJun 26, 22:10 UTC1h 15m
2026-06-26 SRR7992 LEJ → VCE Jun 26, 03:29 UTCJun 26, 04:39 UTC1h 10m
2026-06-25 SRR7993 VCE → LEJ Jun 25, 20:45 UTCJun 25, 21:55 UTC1h 10m
2026-06-25 SRR7992 LEJ → VCE Jun 25, 03:44 UTCJun 25, 04:54 UTC1h 10m
2026-06-24 SRR7993 VCE → LEJ Jun 24, 21:00 UTCJun 24, 22:00 UTC1h 0m
2026-06-24 SRR7992 LEJ → VCE Jun 24, 03:35 UTCJun 24, 04:44 UTC1h 10m
2026-06-23 SRR7993 VCE → LEJ Jun 23, 20:34 UTCJun 23, 21:45 UTC1h 10m
2026-06-23 SRR7992 LEJ → VCE Jun 23, 03:29 UTCJun 23, 04:35 UTC1h 5m
2026-06-22 SRR7993 VCE → LEJ Jun 22, 21:05 UTCJun 22, 22:10 UTC1h 5m
2026-06-21 SRR7992 LEJ → VCE Jun 21, 22:40 UTCJun 21, 23:55 UTC1h 15m
2026-06-21 SRR9062 CGN → LEJ Jun 21, 19:45 UTCJun 21, 20:24 UTC40m
2026-06-19 SRR9061 LEJ → CGN Jun 19, 23:25 UTCJun 20, 00:14 UTC50m
2026-06-19 SRR7993 VCE → LEJ Jun 19, 20:59 UTCJun 19, 21:59 UTC1h 0m
2026-06-19 SRR7992 LEJ → VCE Jun 19, 03:20 UTCJun 19, 04:25 UTC1h 5m
2026-06-18 SRR7993 VCE → LEJ Jun 18, 20:30 UTCJun 18, 21:35 UTC1h 5m
2026-06-18 SRR7992 LEJ → VCE Jun 18, 03:25 UTCJun 18, 04:25 UTC1h 0m
2026-06-17 SRR7993 VCE → LEJ Jun 17, 20:40 UTCJun 17, 21:55 UTC1h 15m
2026-06-17 SRR7992 LEJ → VCE Jun 17, 03:50 UTCJun 17, 04:55 UTC1h 5m
2026-06-16 SRR7993 VCE → LEJ Jun 16, 20:35 UTCJun 16, 21:45 UTC1h 10m
2026-06-16 SRR7992 LEJ → VCE Jun 16, 03:20 UTCJun 16, 04:25 UTC1h 5m
2026-06-12 SRR7993 VCE → LEJ Jun 12, 20:40 UTCJun 12, 22:00 UTC1h 20m
2026-06-12 SRR7992 LEJ → VCE Jun 12, 03:20 UTCJun 12, 04:25 UTC1h 5m
2026-06-11 SRR7993 VCE → LEJ Jun 11, 20:35 UTCJun 11, 21:45 UTC1h 10m
2026-06-11 SRR7992 LEJ → VCE Jun 11, 03:30 UTCJun 11, 04:35 UTC1h 5m
2026-06-10 SRR7993 VCE → LEJ Jun 10, 21:00 UTCJun 10, 22:10 UTC1h 10m
2026-06-10 SRR7992 LEJ → VCE Jun 10, 03:45 UTCJun 10, 04:50 UTC1h 5m
2026-06-09 SRR7993 VCE → LEJ Jun 9, 20:35 UTCJun 9, 21:45 UTC1h 10m
2026-06-09 SRR7992 LEJ → VCE Jun 9, 03:50 UTCJun 9, 04:55 UTC1h 5m
2026-06-08 SRR7993 VCE → LEJ Jun 8, 20:45 UTCJun 8, 21:55 UTC1h 10m
2026-06-07 SRR7992 LEJ → VCE Jun 7, 22:20 UTCJun 7, 23:20 UTC1h 0m
2026-06-05 SRR7993 VCE → LEJ Jun 5, 20:50 UTCJun 5, 21:55 UTC1h 5m
2026-06-05 SRR7992 LEJ → VCE Jun 5, 03:40 UTCJun 5, 04:45 UTC1h 5m
2026-06-04 SRR7993 VCE → LEJ Jun 4, 20:50 UTCJun 4, 21:55 UTC1h 5m
2026-06-04 SRR7992 LEJ → VCE Jun 4, 04:00 UTCJun 4, 05:00 UTC1h 0m
2026-06-03 SRR7993 VCE → LEJ Jun 3, 20:45 UTCJun 3, 22:00 UTC1h 15m

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 6d 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 20 distinct callsigns, including SRR7992, SRR7993, SRR6382, SRR6381, SRR1BL.