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sensors Mode-S transponder

507C71

ICAO 24-bit transponder address · allocated to Uzbekistan

Currently assigned to UK32110 · AIRBUS A-321neo

Hex
507C71
Octal
24076161
Decimal
5,274,737
Country
UZ
Tail
UK32110
Type
A21N
No current signal · last broadcast Jul 26, 10:50 UTC
Flights observed
348
Distinct callsigns
12
Country
UZ
Last broadcast
Jul 26, 10:50 UTC

Last known position

Most recent position reported by Mode-S 507C71.

Country allocation

The ICAO 24-bit address 507C71 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 12 distinct

Callsign Airline Flights Last seen
QNT2232 Qanot Sharq 123 2026-07-25
QNT2231 - 72 2026-07-25
QNT2240 - 42 2026-07-25
QNT2239 - 41 2026-07-24
QNT821 - 20 2026-07-20
QNT822 Qanot Sharq 11 2026-07-20
QNT443 - 10 2026-06-04
QNT444 - 9 2026-06-01
QNT492 - 8 2026-06-02
QNT415 - 5 2026-05-30
QNT416 - 4 2026-05-30
QNT491 - 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 QNT2232 CXR → TAS Jul 25, 22:30 UTCJul 26, 10:50 UTC12h 21m
2026-07-25 QNT2231 - Jul 25, 10:20 UTCJul 26, 10:15 UTC23h 56m
2026-07-25 QNT2231 - Jul 25, 08:20 UTCJul 26, 08:15 UTC23h 56m
2026-07-25 QNT2231 - Jul 25, 06:45 UTCJul 26, 02:25 UTC19h 40m
2026-07-25 QNT2231 - Jul 25, 02:20 UTCJul 26, 02:15 UTC23h 55m
2026-07-25 QNT2240 - Jul 25, 00:20 UTCJul 26, 00:15 UTC23h 55m
2026-07-24 QNT2239 - Jul 24, 22:35 UTCJul 25, 11:00 UTC12h 25m
2026-07-24 QNT2239 - Jul 24, 10:20 UTCJul 25, 10:15 UTC23h 55m
2026-07-24 QNT2239 - Jul 24, 08:20 UTCJul 25, 08:15 UTC23h 55m
2026-07-24 QNT2232 CXR → TAS Jul 24, 06:20 UTCJul 25, 02:20 UTC20h 0m
2026-07-24 QNT2232 CXR → TAS Jul 24, 06:10 UTCJul 25, 02:20 UTC20h 10m
2026-07-24 QNT2232 CXR → TAS Jul 24, 00:20 UTCJul 25, 00:15 UTC23h 55m
2026-07-23 QNT2232 CXR → TAS Jul 23, 22:00 UTCJul 24, 10:40 UTC12h 40m
2026-07-22 QNT2240 - Jul 22, 02:10 UTCJul 22, 14:45 UTC12h 35m
2026-07-21 QNT2239 - Jul 21, 10:30 UTCJul 22, 05:25 UTC18h 55m
2026-07-21 QNT2232 CXR → TAS Jul 21, 08:20 UTCJul 22, 05:25 UTC21h 5m
2026-07-21 QNT2232 CXR → TAS Jul 21, 07:05 UTCJul 22, 05:25 UTC22h 20m
2026-07-21 QNT2232 CXR → TAS Jul 21, 02:20 UTCJul 22, 02:15 UTC23h 55m
2026-07-20 QNT2232 CXR → TAS Jul 20, 22:30 UTCJul 21, 11:30 UTC13h 0m
2026-07-20 QNT2231 - Jul 20, 05:35 UTCJul 21, 02:30 UTC20h 55m
2026-07-20 QNT822 ICN → TAS Jul 20, 04:25 UTCJul 20, 04:50 UTC25m
2026-07-20 QNT821 - Jul 20, 01:30 UTCJul 20, 01:55 UTC25m
2026-07-19 QNT2232 - Jul 19, 07:05 UTCJul 20, 00:40 UTC17h 35m
2026-07-19 QNT2232 - Jul 19, 02:20 UTCJul 20, 00:40 UTC22h 20m
2026-07-19 QNT2232 - Jul 19, 00:20 UTCJul 20, 00:15 UTC23h 55m
2026-07-18 QNT2231 - Jul 18, 22:25 UTCJul 19, 11:10 UTC12h 45m
2026-07-18 QNT2231 - Jul 18, 08:20 UTCJul 19, 08:15 UTC23h 55m
2026-07-18 QNT2231 - Jul 18, 07:50 UTCJul 19, 02:20 UTC18h 30m
2026-07-18 QNT2240 - Jul 18, 02:19 UTCJul 19, 02:15 UTC23h 56m
2026-07-18 QNT2240 - Jul 18, 00:29 UTCJul 19, 00:15 UTC23h 46m
2026-07-17 QNT2240 - Jul 17, 22:40 UTCJul 18, 11:55 UTC13h 16m
2026-07-17 QNT2239 - Jul 17, 10:20 UTCJul 18, 10:15 UTC23h 56m
2026-07-17 QNT2239 - Jul 17, 08:20 UTCJul 18, 08:15 UTC23h 56m
2026-07-17 QNT2232 - Jul 17, 06:25 UTCJul 18, 02:40 UTC20h 15m
2026-07-17 QNT2232 - Jul 17, 00:20 UTCJul 17, 23:35 UTC23h 15m
2026-07-16 QNT2232 - Jul 16, 21:45 UTCJul 17, 10:35 UTC12h 50m
2026-07-16 QNT2231 - Jul 16, 06:20 UTCJul 17, 01:39 UTC19h 20m
2026-07-16 QNT2231 - Jul 16, 06:05 UTCJul 17, 01:39 UTC19h 35m
2026-07-16 QNT822 - Jul 16, 04:50 UTCJul 16, 05:10 UTC20m
2026-07-16 QNT821 - Jul 16, 00:55 UTCJul 16, 01:20 UTC25m
2026-07-15 QNT2239 - Jul 15, 04:20 UTCJul 16, 00:10 UTC19h 50m
2026-07-15 QNT2239 - Jul 15, 02:20 UTCJul 16, 00:10 UTC21h 50m
2026-07-15 QNT2239 - Jul 15, 01:50 UTCJul 16, 00:10 UTC22h 20m
2026-07-14 QNT2239 - Jul 14, 10:55 UTCJul 15, 10:15 UTC23h 19m
2026-07-14 QNT2239 - Jul 14, 08:20 UTCJul 15, 05:40 UTC21h 19m
2026-07-14 QNT2239 - Jul 14, 06:55 UTCJul 15, 05:40 UTC22h 44m
2026-07-14 QNT2232 - Jul 14, 02:20 UTCJul 15, 02:15 UTC23h 54m
2026-07-13 QNT2231 - Jul 13, 22:30 UTCJul 14, 10:55 UTC12h 25m
2026-07-13 QNT2231 - Jul 13, 04:20 UTCJul 14, 02:20 UTC22h 0m
2026-07-13 QNT2231 - Jul 13, 03:55 UTCJul 14, 02:15 UTC22h 20m

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 UK32110 page for operator, model, and routing details .

Mode-S 507C71 frequently asked

What is Mode-S code 507C71?
507C71 is an ICAO 24-bit transponder address. Allocated to Uzbekistan. Assigned to UK32110.
Where is Mode-S 507C71 registered?
Mode-S code 507C71 is allocated to Uzbekistan (UZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 507C71 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 10:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 507C71, octal 24076161, decimal 5,274,737.
What flights does 507C71 operate?
Mode-S 507C71 has broadcast 12 distinct callsigns, including QNT2232, QNT2231, QNT2240, QNT2239, QNT821.