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
Broadcasting now · callsign LZB461 · 38,000 ft
Flights observed
435
Distinct callsigns
20
Country
BG
Last broadcast
49m ago

Current position

452124 is currently broadcasting. Map zoomed to live position.

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 - 39 2026-07-11
LZB564 - 38 2026-07-11
LZB978 - 34 2026-07-12
LZB977 - 34 2026-07-12
LZB461 - 30 2026-07-14
LZB462 - 27 2026-07-12
LZB432 - 21 2026-07-07
LZB431 - 21 2026-07-07
LZB566 - 18 2026-06-28
LZB565 - 16 2026-06-28
LZB408 - 12 2026-07-12
LZB407 - 12 2026-07-12
LZB972 - 11 2026-06-23
LZB971 - 10 2026-06-23
LZB474 - 8 2026-07-11
LZB473 - 8 2026-07-11
LZB852 - 7 2026-07-05
LZB851 - 6 2026-07-05
LZB450 Bulgaria Air 6 2026-06-03
LZB974 - 5 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LZB461 - Jul 14, 04:15 UTCJul 14, 05:00 UTC45m
2026-07-12 LZB408 - Jul 12, 19:20 UTCJul 12, 21:20 UTC2h 0m
2026-07-12 LZB407 - Jul 12, 15:30 UTCJul 12, 18:01 UTC2h 30m
2026-07-12 LZB978 - Jul 12, 13:50 UTCJul 12, 14:20 UTC30m
2026-07-12 LZB977 - Jul 12, 12:20 UTCJul 12, 12:50 UTC30m
2026-07-12 LZB462 - Jul 12, 08:50 UTCJul 12, 11:01 UTC2h 10m
2026-07-12 LZB461 - Jul 12, 04:40 UTCJul 12, 07:15 UTC2h 35m
2026-07-11 LZB564 - Jul 11, 22:15 UTCJul 12, 01:25 UTC3h 10m
2026-07-11 LZB563 - Jul 11, 16:55 UTCJul 11, 20:55 UTC4h 0m
2026-07-11 LZB474 - Jul 11, 10:55 UTCJul 11, 13:35 UTC2h 40m
2026-07-11 LZB473 - Jul 11, 05:45 UTCJul 11, 09:00 UTC3h 15m
2026-07-10 LZB408 - Jul 10, 19:05 UTCJul 10, 21:05 UTC2h 0m
2026-07-10 LZB407 - Jul 10, 15:25 UTCJul 10, 18:00 UTC2h 35m
2026-07-10 LZB978 - Jul 10, 13:45 UTCJul 10, 14:10 UTC25m
2026-07-10 LZB977 - Jul 10, 12:10 UTCJul 10, 12:40 UTC30m
2026-07-10 LZB462 - Jul 10, 09:00 UTCJul 10, 11:05 UTC2h 5m
2026-07-10 LZB461 - Jul 10, 04:35 UTCJul 10, 07:15 UTC2h 40m
2026-07-08 LZB978 - Jul 8, 13:30 UTCJul 8, 14:05 UTC35m
2026-07-08 LZB977 SOF → VAR Jul 8, 12:05 UTCJul 8, 12:40 UTC35m
2026-07-08 LZB462 - Jul 8, 08:55 UTCJul 8, 11:05 UTC2h 10m
2026-07-08 LZB461 - Jul 8, 04:15 UTCJul 8, 07:10 UTC2h 55m
2026-07-07 LZB432 - Jul 7, 08:40 UTCJul 7, 10:55 UTC2h 15m
2026-07-07 LZB431 SOF → CDG Jul 7, 04:15 UTCJul 7, 06:55 UTC2h 40m
2026-07-06 LZB564 LIS → SOF Jul 6, 22:25 UTCJul 7, 02:35 UTC4h 10m
2026-07-06 LZB563 - Jul 6, 16:35 UTCJul 6, 20:50 UTC4h 15m
2026-07-06 LZB978 - Jul 6, 13:50 UTCJul 6, 14:25 UTC35m
2026-07-06 LZB977 SOF → VAR Jul 6, 12:20 UTCJul 6, 13:00 UTC40m
2026-07-06 LZB462 - Jul 6, 08:45 UTCJul 6, 11:00 UTC2h 15m
2026-07-06 LZB461 - Jul 6, 04:45 UTCJul 6, 07:25 UTC2h 40m
2026-07-05 LZB974 - Jul 5, 19:15 UTCJul 5, 19:55 UTC40m
2026-07-05 LZB973 - Jul 5, 17:50 UTCJul 5, 18:20 UTC30m
2026-07-05 LZB808 ATH → SOF Jul 5, 15:55 UTCJul 5, 16:45 UTC50m
2026-07-05 LZB807 SOF → ATH Jul 5, 13:25 UTCJul 5, 14:25 UTC1h 0m
2026-07-05 LZB852 - Jul 5, 08:50 UTCJul 5, 11:25 UTC2h 35m
2026-07-05 LZB851 - Jul 5, 04:10 UTCJul 5, 07:35 UTC3h 25m
2026-07-04 LZB564 LIS → SOF Jul 4, 22:15 UTCJul 5, 01:45 UTC3h 30m
2026-07-04 LZB563 - Jul 4, 16:55 UTCJul 4, 20:45 UTC3h 50m
2026-07-04 LZB978 - Jul 4, 13:35 UTCJul 4, 14:10 UTC35m
2026-07-04 LZB977 SOF → VAR Jul 4, 12:15 UTCJul 4, 12:50 UTC35m
2026-07-04 LZB852 - Jul 4, 08:15 UTCJul 4, 10:40 UTC2h 25m
2026-07-04 LZB851 - Jul 4, 03:45 UTCJul 4, 07:10 UTC3h 25m
2026-07-03 LZB408 - Jul 3, 18:55 UTCJul 3, 20:55 UTC2h 0m
2026-07-03 LZB407 SOF → BRU Jul 3, 15:25 UTCJul 3, 18:00 UTC2h 35m
2026-07-03 LZB978 - Jul 3, 13:40 UTCJul 3, 14:20 UTC40m
2026-07-03 LZB977 SOF → VAR Jul 3, 12:15 UTCJul 3, 12:45 UTC30m
2026-07-02 LZB462 AMS → SOF Jul 2, 08:35 UTCJul 2, 10:55 UTC2h 20m
2026-07-02 LZB461 - Jul 2, 04:15 UTCJul 2, 06:45 UTC2h 30m
2026-07-01 LZB978 - Jul 1, 16:50 UTCJul 1, 17:35 UTC45m
2026-07-01 LZB978 - Jul 1, 14:05 UTCJul 1, 15:35 UTC1h 30m
2026-07-01 LZB977 SOF → VAR Jul 1, 12:35 UTCJul 1, 13:10 UTC35m

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?
Yes. Mode-S 452124 is currently airborne.
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.