Apparatus

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sensors Mode-S transponder

507CB3

ICAO 24-bit transponder address · allocated to Uzbekistan

Currently assigned to UK32132 · AIRBUS A-321neo

Hex
507CB3
Octal
24076263
Decimal
5,274,803
Country
UZ
Tail
UK32132
Type
A21N
No current signal · last broadcast 10h ago
Flights observed
186
Distinct callsigns
20
Country
UZ
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 507CB3.

Country allocation

The ICAO 24-bit address 507CB3 falls within the block assigned to Uzbekistan (UZ) by ICAO Annex 10, Volume III. Every aircraft registered in Uzbekistan 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
MFX5538 - 31 2026-07-11
MFX5539 - 23 2026-07-12
MFX5537 - 21 2026-07-11
MFX5540 - 19 2026-07-13
MFX434 - 13 2026-07-06
MFX5536 - 12 2026-05-25
MFX550 - 9 2026-07-10
MFX5535 - 8 2026-04-28
MFX549 - 7 2026-07-10
MFX529 - 7 2026-07-02
MFX433 - 7 2026-06-22
MFX530 - 6 2026-06-11
MFX221 - 6 2026-07-02
MFX222 - 4 2026-05-29
MFX446 - 3 2026-05-11
MFX421 - 3 2026-06-19
MFX404 My Freighter LLC 2 2026-04-26
MFX512 - 1 2026-04-15
MFX456 - 1 2026-05-28
MFX445 - 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 MFX5540 - Jul 13, 04:05 UTCJul 13, 22:00 UTC17h 55m
2026-07-12 MFX5540 - Jul 12, 22:50 UTCJul 13, 22:00 UTC23h 10m
2026-07-12 MFX5539 - Jul 12, 20:10 UTCJul 13, 07:40 UTC11h 30m
2026-07-12 MFX5539 - Jul 12, 06:50 UTCJul 13, 06:45 UTC23h 55m
2026-07-12 MFX5539 - Jul 12, 05:01 UTCJul 13, 04:45 UTC23h 45m
2026-07-11 MFX5538 - Jul 11, 22:50 UTCJul 12, 22:45 UTC23h 55m
2026-07-11 MFX5537 - Jul 11, 13:00 UTCJul 12, 08:40 UTC19h 40m
2026-07-11 MFX5537 - Jul 11, 08:15 UTCJul 12, 06:45 UTC22h 30m
2026-07-10 MFX550 - Jul 10, 05:40 UTCJul 10, 06:05 UTC25m
2026-07-10 MFX550 - Jul 10, 04:30 UTCJul 10, 04:50 UTC20m
2026-07-10 MFX549 - Jul 10, 01:35 UTCJul 10, 01:55 UTC20m
2026-07-10 MFX549 - Jul 10, 00:15 UTCJul 10, 00:35 UTC20m
2026-07-07 MFX5539 - Jul 7, 19:20 UTCJul 8, 07:00 UTC11h 40m
2026-07-07 MFX5539 - Jul 7, 08:55 UTCJul 8, 07:00 UTC22h 5m
2026-07-06 MFX434 - Jul 6, 20:55 UTCJul 7, 20:20 UTC23h 25m
2026-07-06 MFX5540 - Jul 6, 04:10 UTCJul 6, 22:05 UTC17h 55m
2026-07-05 MFX5540 - Jul 5, 22:50 UTCJul 6, 22:05 UTC23h 15m
2026-07-05 MFX5539 - Jul 5, 19:50 UTCJul 6, 07:35 UTC11h 45m
2026-07-05 MFX5539 - Jul 5, 08:50 UTCJul 6, 07:35 UTC22h 45m
2026-07-05 MFX5539 - Jul 5, 06:55 UTCJul 6, 06:45 UTC23h 50m
2026-07-05 MFX5538 - Jul 5, 04:50 UTCJul 6, 04:45 UTC23h 55m
2026-07-05 MFX5538 - Jul 5, 04:40 UTCJul 5, 23:55 UTC19h 15m
2026-07-05 MFX5538 - Jul 5, 00:50 UTCJul 5, 23:55 UTC23h 5m
2026-07-04 MFX5538 - Jul 4, 22:50 UTCJul 5, 22:45 UTC23h 55m
2026-07-04 MFX5538 - Jul 4, 20:50 UTCJul 5, 20:45 UTC23h 55m
2026-07-04 MFX5537 - Jul 4, 20:15 UTCJul 5, 09:30 UTC13h 15m
2026-07-04 MFX5537 - Jul 4, 14:00 UTCJul 5, 09:30 UTC19h 30m
2026-07-02 MFX529 - Jul 2, 12:50 UTCJul 3, 07:45 UTC18h 55m
2026-07-02 MFX529 - Jul 2, 12:30 UTCJul 3, 07:45 UTC19h 15m
2026-07-02 MFX221 - Jul 2, 09:15 UTCJul 2, 09:40 UTC25m
2026-06-30 MFX5539 - Jun 30, 19:15 UTCJul 1, 07:00 UTC11h 45m
2026-06-30 MFX5539 - Jun 30, 10:50 UTCJul 1, 07:00 UTC20h 10m
2026-06-30 MFX5539 - Jun 30, 09:40 UTCJul 1, 07:00 UTC21h 20m
2026-06-29 MFX5539 - Jun 29, 22:49 UTCJun 30, 22:45 UTC23h 56m
2026-06-29 MFX434 - Jun 29, 22:05 UTCJun 30, 20:15 UTC22h 11m
2026-06-27 MFX529 - Jun 27, 14:00 UTCJun 28, 07:25 UTC17h 25m
2026-06-25 MFX529 - Jun 25, 20:59 UTCJun 26, 07:35 UTC10h 35m
2026-06-25 MFX529 - Jun 25, 06:50 UTCJun 26, 06:45 UTC23h 55m
2026-06-25 MFX5538 - Jun 25, 05:00 UTCJun 26, 00:35 UTC19h 35m
2026-06-25 MFX5538 - Jun 25, 03:59 UTCJun 26, 00:35 UTC20h 35m
2026-06-24 MFX5538 - Jun 24, 22:49 UTCJun 25, 22:45 UTC23h 55m
2026-06-24 MFX5537 - Jun 24, 19:20 UTCJun 25, 07:34 UTC12h 15m
2026-06-24 MFX5537 - Jun 24, 06:50 UTCJun 25, 06:44 UTC23h 55m
2026-06-24 MFX5537 - Jun 24, 04:50 UTCJun 25, 04:35 UTC23h 45m
2026-06-24 MFX5537 - Jun 24, 02:54 UTCJun 24, 23:45 UTC20h 50m
2026-06-23 MFX5540 - Jun 23, 23:19 UTCJun 24, 22:45 UTC23h 25m
2026-06-23 MFX5540 - Jun 23, 20:49 UTCJun 24, 20:44 UTC23h 55m
2026-06-23 MFX5540 - Jun 23, 19:10 UTCJun 24, 07:05 UTC11h 55m
2026-06-23 MFX5540 - Jun 23, 09:05 UTCJun 24, 07:05 UTC22h 0m
2026-06-22 MFX433 - Jun 22, 21:19 UTCJun 23, 10:15 UTC12h 55m

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 UK32132 page for operator, model, and routing details .

Mode-S 507CB3 frequently asked

What is Mode-S code 507CB3?
507CB3 is an ICAO 24-bit transponder address. Allocated to Uzbekistan. Assigned to UK32132.
Where is Mode-S 507CB3 registered?
Mode-S code 507CB3 is allocated to Uzbekistan (UZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 507CB3 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 507CB3, octal 24076263, decimal 5,274,803.
What flights does 507CB3 operate?
Mode-S 507CB3 has broadcast 20 distinct callsigns, including MFX5538, MFX5539, MFX5537, MFX5540, MFX434.