sensors Mode-S transponder
507C72
ICAO 24-bit transponder address · allocated to Uzbekistan
Currently assigned to UK32111 · AIRBUS A-321neo
- Hex
- 507C72
- Octal
- 24076162
- Decimal
- 5,274,738
- Country
- UZ
- Tail
- UK32111
- Type
- A21N
- Flights observed
- 153
- Distinct callsigns
- 15
- Country
- UZ
- Last broadcast
- 40m ago
Last known position
Country allocation
The ICAO 24-bit address 507C72 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| QNT2232 | Qanot Sharq | 49 | 2026-05-21 |
| QNT2240 | - | 21 | 2026-05-13 |
| QNT2231 | - | 20 | 2026-05-29 |
| QNT2239 | - | 16 | 2026-05-20 |
| QNT443 | - | 10 | 2026-05-28 |
| QNT444 | - | 8 | 2026-05-28 |
| QNT415 | - | 8 | 2026-05-23 |
| QNT492 | - | 7 | 2026-05-26 |
| QNT416 | - | 6 | 2026-05-23 |
| QNT821 | - | 2 | 2026-05-23 |
| QNT491 | - | 2 | 2026-04-17 |
| QNT867 | - | 1 | 2026-05-17 |
| QNT822 | Qanot Sharq | 1 | 2026-05-16 |
| QNT5572 | - | 1 | 2026-05-24 |
| QNT5571 | - | 1 | 2026-05-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | QNT2231 | - | May 29, 14:10 UTC | May 30, 08:30 UTC | 18h 20m |
| 2026-05-28 | QNT444 | LGW → FRA | May 28, 17:55 UTC | May 29, 12:10 UTC | 18h 15m |
| 2026-05-28 | QNT443 | - | May 28, 14:20 UTC | May 28, 16:05 UTC | 1h 45m |
| 2026-05-26 | QNT492 | - | May 26, 13:29 UTC | May 26, 17:35 UTC | 4h 5m |
| 2026-05-25 | QNT444 | LGW → FRA | May 25, 18:20 UTC | May 26, 11:15 UTC | 16h 55m |
| 2026-05-25 | QNT443 | - | May 25, 13:15 UTC | May 25, 16:20 UTC | 3h 5m |
| 2026-05-24 | QNT443 | - | May 24, 15:00 UTC | May 25, 14:30 UTC | 23h 30m |
| 2026-05-24 | QNT5572 | - | May 24, 14:00 UTC | May 24, 16:05 UTC | 2h 5m |
| 2026-05-24 | QNT5571 | - | May 24, 11:55 UTC | May 24, 12:10 UTC | 15m |
| 2026-05-23 | QNT416 | - | May 23, 21:35 UTC | May 24, 11:10 UTC | 13h 35m |
| 2026-05-23 | QNT415 | ICN → MXP | May 23, 04:15 UTC | May 23, 20:10 UTC | 15h 56m |
| 2026-05-23 | QNT821 | - | May 23, 00:45 UTC | May 23, 01:05 UTC | 20m |
| 2026-05-21 | QNT2232 | CXR → TAS | May 21, 21:55 UTC | May 22, 10:35 UTC | 12h 40m |
| 2026-05-21 | QNT2232 | CXR → TAS | May 21, 10:35 UTC | May 22, 10:30 UTC | 23h 55m |
| 2026-05-21 | QNT2232 | CXR → TAS | May 21, 08:35 UTC | May 22, 08:30 UTC | 23h 55m |
| 2026-05-21 | QNT2232 | CXR → TAS | May 21, 06:35 UTC | May 22, 06:30 UTC | 23h 55m |
| 2026-05-21 | QNT2231 | - | May 21, 06:15 UTC | May 22, 02:10 UTC | 19h 55m |
| 2026-05-21 | QNT2231 | - | May 21, 02:35 UTC | May 22, 02:10 UTC | 23h 35m |
| 2026-05-21 | QNT2231 | - | May 21, 00:35 UTC | May 22, 00:10 UTC | 23h 35m |
| 2026-05-20 | QNT2231 | - | May 20, 22:35 UTC | May 21, 22:30 UTC | 23h 55m |
| 2026-05-20 | QNT2231 | - | May 20, 22:25 UTC | May 21, 10:45 UTC | 12h 20m |
| 2026-05-20 | QNT2231 | - | May 20, 08:35 UTC | May 21, 08:30 UTC | 23h 55m |
| 2026-05-20 | QNT2231 | - | May 20, 08:15 UTC | May 21, 06:30 UTC | 22h 15m |
| 2026-05-20 | QNT2231 | - | May 20, 03:15 UTC | May 21, 02:30 UTC | 23h 16m |
| 2026-05-20 | QNT2239 | - | May 20, 00:35 UTC | May 21, 00:30 UTC | 23h 56m |
| 2026-05-20 | QNT2239 | - | May 20, 00:05 UTC | May 20, 22:30 UTC | 22h 26m |
| 2026-05-19 | QNT2239 | - | May 19, 14:35 UTC | May 20, 09:35 UTC | 19h 1m |
| 2026-05-19 | QNT2239 | - | May 19, 13:40 UTC | May 20, 09:35 UTC | 19h 56m |
| 2026-05-18 | QNT444 | LGW → FRA | May 18, 18:00 UTC | May 19, 11:10 UTC | 17h 9m |
| 2026-05-18 | QNT443 | - | May 18, 11:25 UTC | May 18, 16:15 UTC | 4h 50m |
| 2026-05-17 | QNT443 | - | May 17, 18:35 UTC | May 18, 16:15 UTC | 21h 40m |
| 2026-05-17 | QNT443 | - | May 17, 18:25 UTC | May 18, 16:15 UTC | 21h 50m |
| 2026-05-17 | QNT867 | - | May 17, 15:25 UTC | May 17, 15:35 UTC | 10m |
| 2026-05-16 | QNT416 | - | May 16, 22:10 UTC | May 17, 02:20 UTC | 4h 10m |
| 2026-05-16 | QNT415 | - | May 16, 15:55 UTC | May 16, 20:25 UTC | 4h 30m |
| 2026-05-16 | QNT822 | ICN → TAS | May 16, 04:35 UTC | May 16, 04:50 UTC | 15m |
| 2026-05-16 | QNT821 | - | May 16, 01:25 UTC | May 16, 01:40 UTC | 15m |
| 2026-05-14 | QNT2232 | CXR → TAS | May 14, 22:00 UTC | May 15, 10:35 UTC | 12h 35m |
| 2026-05-14 | QNT2232 | CXR → TAS | May 14, 10:35 UTC | May 15, 10:30 UTC | 23h 55m |
| 2026-05-14 | QNT2232 | CXR → TAS | May 14, 08:35 UTC | May 15, 08:30 UTC | 23h 55m |
| 2026-05-14 | QNT2232 | CXR → TAS | May 14, 06:35 UTC | May 15, 06:30 UTC | 23h 55m |
| 2026-05-14 | QNT2232 | CXR → TAS | May 14, 05:55 UTC | May 15, 02:20 UTC | 20h 25m |
| 2026-05-14 | QNT2232 | CXR → TAS | May 14, 00:40 UTC | May 15, 00:20 UTC | 23h 40m |
| 2026-05-13 | QNT2232 | CXR → TAS | May 13, 22:35 UTC | May 14, 22:30 UTC | 23h 55m |
| 2026-05-13 | QNT2232 | CXR → TAS | May 13, 21:55 UTC | May 14, 10:45 UTC | 12h 50m |
| 2026-05-13 | QNT2232 | CXR → TAS | May 13, 14:35 UTC | May 14, 10:45 UTC | 20h 10m |
| 2026-05-13 | QNT2232 | CXR → TAS | May 13, 12:45 UTC | May 14, 10:45 UTC | 22h 0m |
| 2026-05-13 | QNT2240 | - | May 13, 10:55 UTC | May 14, 10:31 UTC | 23h 35m |
| 2026-05-13 | QNT2240 | - | May 13, 06:35 UTC | May 14, 06:30 UTC | 23h 55m |
| 2026-05-13 | QNT2240 | - | May 13, 04:35 UTC | May 14, 02:00 UTC | 21h 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 UK32111 page for operator, model, and routing details .