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
Transponder active on ground
Flights observed
143
Distinct callsigns
12
Country
UZ
Last broadcast
14h ago

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 62 2026-05-28
QNT2231 - 26 2026-05-28
QNT2240 - 12 2026-05-27
QNT444 - 8 2026-05-22
QNT443 - 8 2026-05-21
QNT492 - 7 2026-05-12
QNT2239 - 5 2026-05-26
QNT821 - 4 2026-05-28
QNT415 - 4 2026-05-02
QNT491 - 3 2026-04-14
QNT416 - 3 2026-05-02
QNT822 Qanot Sharq 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 QNT2232 CXR → TAS May 28, 22:30 UTCMay 29, 11:05 UTC12h 35m
2026-05-28 QNT2231 - May 28, 05:15 UTCMay 29, 03:05 UTC21h 50m
2026-05-28 QNT822 ICN → TAS May 28, 03:50 UTCMay 28, 04:10 UTC20m
2026-05-28 QNT821 - May 28, 00:50 UTCMay 28, 01:10 UTC20m
2026-05-27 QNT2240 - May 27, 04:24 UTCMay 28, 00:00 UTC19h 36m
2026-05-27 QNT2240 - May 27, 00:19 UTCMay 28, 00:00 UTC23h 41m
2026-05-26 QNT2239 - May 26, 20:20 UTCMay 27, 09:00 UTC12h 40m
2026-05-26 QNT2239 - May 26, 10:20 UTCMay 27, 09:00 UTC22h 40m
2026-05-26 QNT2232 CXR → TAS May 26, 07:05 UTCMay 27, 05:49 UTC22h 45m
2026-05-26 QNT2232 CXR → TAS May 26, 02:24 UTCMay 27, 00:34 UTC22h 10m
2026-05-26 QNT2232 CXR → TAS May 26, 00:19 UTCMay 27, 00:14 UTC23h 55m
2026-05-25 QNT2232 CXR → TAS May 25, 22:49 UTCMay 26, 22:15 UTC23h 25m
2026-05-25 QNT2231 - May 25, 05:05 UTCMay 26, 03:15 UTC22h 10m
2026-05-25 QNT821 - May 25, 02:30 UTCMay 25, 02:55 UTC25m
2026-05-24 QNT2232 CXR → TAS May 24, 03:50 UTCMay 24, 16:30 UTC12h 40m
2026-05-23 QNT2231 - May 23, 12:20 UTCMay 24, 12:15 UTC23h 55m
2026-05-23 QNT2231 - May 23, 08:20 UTCMay 24, 08:10 UTC23h 50m
2026-05-23 QNT2231 - May 23, 06:20 UTCMay 24, 06:05 UTC23h 45m
2026-05-23 QNT2231 - May 23, 04:20 UTCMay 24, 04:15 UTC23h 56m
2026-05-22 QNT2231 - May 22, 18:20 UTCMay 23, 13:45 UTC19h 24m
2026-05-22 QNT2231 - May 22, 17:40 UTCMay 23, 13:45 UTC20h 4m
2026-05-22 QNT444 LGW → FRA May 22, 00:20 UTCMay 22, 15:45 UTC15h 25m
2026-05-21 QNT443 ICN → LGW May 21, 05:05 UTCMay 21, 22:55 UTC17h 50m
2026-05-21 QNT821 - May 21, 00:50 UTCMay 21, 01:10 UTC20m
2026-05-20 QNT821 - May 20, 23:35 UTCMay 21, 00:00 UTC25m
2026-05-18 QNT2232 CXR → TAS May 18, 23:25 UTCMay 19, 11:40 UTC12h 15m
2026-05-18 QNT2231 - May 18, 06:20 UTCMay 19, 03:30 UTC21h 9m
2026-05-18 QNT2231 - May 18, 06:10 UTCMay 19, 03:30 UTC21h 19m
2026-05-18 QNT2231 - May 18, 00:20 UTCMay 19, 00:15 UTC23h 54m
2026-05-17 QNT2239 - May 17, 20:30 UTCMay 18, 07:00 UTC10h 30m
2026-05-17 QNT2239 - May 17, 10:20 UTCMay 18, 07:00 UTC20h 40m
2026-05-17 QNT2239 - May 17, 08:20 UTCMay 18, 07:00 UTC22h 40m
2026-05-17 QNT2232 CXR → TAS May 17, 07:00 UTCMay 18, 06:10 UTC23h 10m
2026-05-17 QNT2232 CXR → TAS May 17, 02:20 UTCMay 18, 00:45 UTC22h 25m
2026-05-17 QNT2232 CXR → TAS May 17, 00:20 UTCMay 18, 00:15 UTC23h 55m
2026-05-16 QNT2232 CXR → TAS May 16, 23:20 UTCMay 17, 22:15 UTC22h 55m
2026-05-16 QNT2232 CXR → TAS May 16, 10:31 UTCMay 17, 10:15 UTC23h 45m
2026-05-16 QNT2232 CXR → TAS May 16, 08:20 UTCMay 17, 08:15 UTC23h 55m
2026-05-16 QNT2232 CXR → TAS May 16, 07:20 UTCMay 17, 03:25 UTC20h 5m
2026-05-16 QNT2232 CXR → TAS May 16, 02:40 UTCMay 17, 01:35 UTC22h 55m
2026-05-16 QNT2232 CXR → TAS May 16, 00:20 UTCMay 17, 00:15 UTC23h 56m
2026-05-15 QNT2232 CXR → TAS May 15, 17:10 UTCMay 16, 12:05 UTC18h 56m
2026-05-15 QNT2232 CXR → TAS May 15, 14:20 UTCMay 16, 12:05 UTC21h 45m
2026-05-15 QNT2232 CXR → TAS May 15, 13:40 UTCMay 16, 12:05 UTC22h 25m
2026-05-14 QNT444 LGW → FRA May 14, 21:00 UTCMay 15, 11:50 UTC14h 50m
2026-05-14 QNT443 - May 14, 05:50 UTCMay 14, 19:00 UTC13h 10m
2026-05-13 QNT443 - May 13, 22:20 UTCMay 14, 19:00 UTC20h 40m
2026-05-13 QNT443 - May 13, 21:40 UTCMay 14, 19:00 UTC21h 20m
2026-05-12 QNT492 - May 12, 13:30 UTCMay 12, 17:40 UTC4h 10m
2026-05-11 QNT444 LGW → FRA May 11, 17:45 UTCMay 12, 11:10 UTC17h 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 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?
Mode-S 507C71 is currently broadcasting from the ground.
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, QNT444, QNT443.