sensors Mode-S transponder

45884D

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-BBM

Hex
45884D
Octal
21304115
Decimal
4,556,877
Country
DK
Tail
OY-BBM
No current signal · last broadcast 19h ago
Flights observed
28
Distinct callsigns
3
Country
DK
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 45884D.

Country allocation

The ICAO 24-bit address 45884D 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 3 distinct

Callsign Airline Flights Last seen
BBB1 - 21 2026-05-29
BBB17P - 4 2026-05-24
BBB17 - 3 2026-05-25

Recent flights last 28

DateFlightRouteTakeoffLandingDuration
2026-05-29 BBB1 - May 29, 07:20 UTCMay 29, 10:05 UTC2h 45m
2026-05-26 BBB1 - May 26, 10:29 UTCMay 26, 12:50 UTC2h 20m
2026-05-25 BBB17 - May 25, 15:45 UTCMay 25, 15:55 UTC10m
2026-05-25 BBB1 - May 25, 12:50 UTCMay 25, 14:05 UTC1h 15m
2026-05-24 BBB17P - May 24, 13:45 UTCMay 24, 14:10 UTC25m
2026-05-24 BBB17 - May 24, 10:45 UTCMay 24, 13:05 UTC2h 20m
2026-05-24 BBB17P - May 24, 08:40 UTCMay 24, 09:45 UTC1h 5m
2026-05-22 BBB1 - May 22, 10:55 UTCMay 22, 12:00 UTC1h 5m
2026-05-21 BBB1 - May 21, 12:10 UTCMay 21, 13:10 UTC1h 0m
2026-05-19 BBB1 - May 19, 07:50 UTCMay 19, 09:00 UTC1h 10m
2026-05-17 BBB1 - May 17, 09:40 UTCMay 17, 11:40 UTC2h 0m
2026-05-14 BBB1 - May 14, 20:15 UTCMay 14, 22:10 UTC1h 55m
2026-05-14 BBB1 - May 14, 09:40 UTCMay 14, 10:05 UTC25m
2026-05-12 BBB1 BER → BLL May 12, 20:01 UTCMay 12, 20:45 UTC45m
2026-05-12 BBB1 - May 12, 06:05 UTCMay 12, 06:50 UTC45m
2026-05-02 BBB17P - May 2, 14:45 UTCMay 2, 15:55 UTC1h 10m
2026-05-02 BBB17 - May 2, 11:00 UTCMay 2, 14:15 UTC3h 15m
2026-05-02 BBB17P - May 2, 07:15 UTCMay 2, 09:50 UTC2h 35m
2026-04-29 BBB1 BMA → BLL Apr 29, 19:25 UTCApr 29, 20:20 UTC55m
2026-04-29 BBB1 - Apr 29, 05:15 UTCApr 29, 06:25 UTC1h 10m
2026-04-24 BBB1 - Apr 24, 18:55 UTCApr 24, 20:00 UTC1h 5m
2026-04-23 BBB1 - Apr 23, 07:15 UTCApr 23, 08:30 UTC1h 15m
2026-04-20 BBB1 - Apr 20, 13:00 UTCApr 20, 13:50 UTC50m
2026-04-20 BBB1 - Apr 20, 07:10 UTCApr 20, 08:00 UTC50m
2026-04-17 BBB1 - Apr 17, 17:25 UTCApr 17, 18:05 UTC40m
2026-04-17 BBB1 - Apr 17, 15:35 UTCApr 17, 17:15 UTC1h 40m
2026-04-13 BBB1 - Apr 13, 19:50 UTCApr 13, 21:10 UTC1h 20m
2026-04-13 BBB1 - Apr 13, 18:45 UTCApr 13, 20:10 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-BBM page for operator, model, and routing details .

Mode-S 45884D frequently asked

What is Mode-S code 45884D?
45884D is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-BBM.
Where is Mode-S 45884D registered?
Mode-S code 45884D is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 45884D broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 45884D, octal 21304115, decimal 4,556,877.
What flights does 45884D operate?
Mode-S 45884D has broadcast 3 distinct callsigns, including BBB1, BBB17P, BBB17.