Apparatus

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sensors Mode-S transponder

452124

ICAO 24-bit transponder address · allocated to Bulgaria

Currently assigned to LZ-ROM · AIRBUS A220-300

Hex
452124
Octal
21220444
Decimal
4,530,468
Country
BG
Tail
LZ-ROM
Type
BCS3
No current signal · last broadcast 1d ago
Flights observed
244
Distinct callsigns
20
Country
BG
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 452124.

Country allocation

The ICAO 24-bit address 452124 falls within the block assigned to Bulgaria (BG) by ICAO Annex 10, Volume III. Every aircraft registered in Bulgaria 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
LZB563 Bulgaria Air 22 2026-05-27
LZB564 Bulgaria Air 21 2026-05-27
LZB978 Bulgaria Air 16 2026-05-26
LZB977 Bulgaria Air 16 2026-05-26
LZB461 Bulgaria Air 16 2026-05-25
LZB462 Bulgaria Air 14 2026-05-25
LZB432 Bulgaria Air 14 2026-05-26
LZB431 Bulgaria Air 14 2026-05-26
LZB566 Bulgaria Air 13 2026-05-24
LZB565 Bulgaria Air 11 2026-05-24
LZB972 Bulgaria Air 9 2026-05-27
LZB971 Bulgaria Air 8 2026-05-27
LZB408 Bulgaria Air 6 2026-05-26
LZB407 Bulgaria Air 6 2026-05-26
LZB450 Bulgaria Air 5 2026-05-27
LZB974 Bulgaria Air 4 2026-05-22
LZB973 Bulgaria Air 4 2026-05-22
LZB808 Bulgaria Air 4 2026-05-08
LZB807 Bulgaria Air 4 2026-05-08
LZB449 Bulgaria Air 4 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 LZB564 LIS → SOF May 27, 22:25 UTCMay 28, 01:55 UTC3h 30m
2026-05-27 LZB563 SOF → LIS May 27, 17:10 UTCMay 27, 21:00 UTC3h 50m
2026-05-27 LZB450 FCO → SOF May 27, 10:10 UTCMay 27, 11:35 UTC1h 25m
2026-05-27 LZB449 SOF → FCO May 27, 07:25 UTCMay 27, 08:50 UTC1h 25m
2026-05-27 LZB972 VAR → SOF May 27, 05:35 UTCMay 27, 05:55 UTC20m
2026-05-27 LZB971 SOF → VAR May 27, 04:09 UTCMay 27, 04:39 UTC30m
2026-05-26 LZB408 BRU → SOF May 26, 18:34 UTCMay 26, 20:45 UTC2h 10m
2026-05-26 LZB407 SOF → BRU May 26, 15:20 UTCMay 26, 17:39 UTC2h 20m
2026-05-26 LZB978 VAR → SOF May 26, 13:54 UTCMay 26, 14:09 UTC15m
2026-05-26 LZB977 SOF → VAR May 26, 12:20 UTCMay 26, 12:54 UTC35m
2026-05-26 LZB432 CDG → SOF May 26, 08:30 UTCMay 26, 10:44 UTC2h 15m
2026-05-26 LZB431 SOF → CDG May 26, 04:20 UTCMay 26, 06:49 UTC2h 30m
2026-05-25 LZB564 LIS → SOF May 25, 22:19 UTCMay 26, 02:04 UTC3h 45m
2026-05-25 LZB563 SOF → LIS May 25, 16:40 UTCMay 25, 20:19 UTC3h 40m
2026-05-25 LZB978 VAR → SOF May 25, 13:35 UTCMay 25, 14:15 UTC40m
2026-05-25 LZB977 SOF → VAR May 25, 12:10 UTCMay 25, 12:40 UTC30m
2026-05-25 LZB462 AMS → SOF May 25, 08:30 UTCMay 25, 10:50 UTC2h 20m
2026-05-25 LZB461 SOF → AMS May 25, 04:15 UTCMay 25, 06:40 UTC2h 25m
2026-05-24 LZB566 OPO → SOF May 24, 20:35 UTCMay 24, 23:46 UTC3h 11m
2026-05-24 LZB565 SOF → OPO May 24, 15:25 UTCMay 24, 18:50 UTC3h 25m
2026-05-24 LZB978 VAR → SOF May 24, 13:45 UTCMay 24, 14:05 UTC20m
2026-05-24 LZB977 SOF → VAR May 24, 12:15 UTCMay 24, 12:50 UTC35m
2026-05-24 LZB462 AMS → SOF May 24, 08:30 UTCMay 24, 10:50 UTC2h 20m
2026-05-24 LZB461 SOF → AMS May 24, 04:15 UTCMay 24, 06:50 UTC2h 35m
2026-05-23 LZB564 LIS → SOF May 23, 22:10 UTCMay 24, 01:45 UTC3h 35m
2026-05-23 LZB563 SOF → LIS May 23, 17:05 UTCMay 23, 21:00 UTC3h 56m
2026-05-23 LZB852 LHR → SOF May 23, 08:15 UTCMay 23, 10:50 UTC2h 35m
2026-05-23 LZB851 SOF → LHR May 23, 03:40 UTCMay 23, 06:40 UTC3h 0m
2026-05-22 LZB974 VAR → SOF May 22, 19:40 UTCMay 22, 20:00 UTC20m
2026-05-22 LZB973 SOF → VAR May 22, 18:20 UTCMay 22, 18:55 UTC35m
2026-05-22 LZB320 BER → SOF May 22, 15:30 UTCMay 22, 17:15 UTC1h 45m
2026-05-22 LZB319 SOF → BER May 22, 12:15 UTCMay 22, 14:15 UTC2h 0m
2026-05-22 LZB432 CDG → SOF May 22, 08:50 UTCMay 22, 11:05 UTC2h 15m
2026-05-22 LZB431 SOF → CDG May 22, 04:30 UTCMay 22, 07:00 UTC2h 30m
2026-05-21 LZB566 OPO → SOF May 21, 20:45 UTCMay 22, 00:15 UTC3h 30m
2026-05-21 LZB565 SOF → OPO May 21, 15:35 UTCMay 21, 19:10 UTC3h 35m
2026-05-21 LZB432 CDG → SOF May 21, 08:40 UTCMay 21, 10:50 UTC2h 10m
2026-05-21 LZB431 SOF → CDG May 21, 04:30 UTCMay 21, 07:10 UTC2h 40m
2026-05-20 LZB564 LIS → SOF May 20, 22:20 UTCMay 21, 01:40 UTC3h 20m
2026-05-20 LZB563 SOF → LIS May 20, 17:05 UTCMay 20, 20:50 UTC3h 45m
2026-05-20 LZB978 VAR → SOF May 20, 14:00 UTCMay 20, 14:25 UTC25m
2026-05-20 LZB977 SOF → VAR May 20, 12:10 UTCMay 20, 12:50 UTC40m
2026-05-20 LZB432 CDG → SOF May 20, 08:30 UTCMay 20, 10:30 UTC2h 0m
2026-05-20 LZB431 SOF → CDG May 20, 04:25 UTCMay 20, 07:00 UTC2h 36m
2026-05-19 LZB432 CDG → SOF May 19, 08:40 UTCMay 19, 10:45 UTC2h 5m
2026-05-19 LZB431 SOF → CDG May 19, 04:15 UTCMay 19, 06:45 UTC2h 30m
2026-05-18 LZB564 LIS → SOF May 18, 22:35 UTCMay 19, 01:50 UTC3h 15m
2026-05-18 LZB563 SOF → LIS May 18, 16:40 UTCMay 18, 20:35 UTC3h 54m
2026-05-18 LZB976 VAR → SOF May 18, 13:35 UTCMay 18, 13:50 UTC15m
2026-05-18 LZB232 CDG → VAR May 18, 09:50 UTCMay 18, 12:25 UTC2h 35m

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 LZ-ROM page for operator, model, and routing details .

Mode-S 452124 frequently asked

What is Mode-S code 452124?
452124 is an ICAO 24-bit transponder address. Allocated to Bulgaria. Assigned to LZ-ROM.
Where is Mode-S 452124 registered?
Mode-S code 452124 is allocated to Bulgaria (BG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 452124 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 452124, octal 21220444, decimal 4,530,468.
What flights does 452124 operate?
Mode-S 452124 has broadcast 20 distinct callsigns, including LZB563, LZB564, LZB978, LZB977, LZB461.