sensors Mode-S transponder
507C98
ICAO 24-bit transponder address · allocated to Uzbekistan
Currently assigned to UK32131 · AIRBUS A-321neo
- Hex
- 507C98
- Octal
- 24076230
- Decimal
- 5,274,776
- Country
- UZ
- Tail
- UK32131
- Type
- A21N
- Flights observed
- 74
- Distinct callsigns
- 16
- Country
- UZ
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address 507C98 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 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| MFX5538 | - | 14 | 2026-05-28 |
| MFX5536 | - | 14 | 2026-05-10 |
| MFX530 | - | 9 | 2026-05-28 |
| MFX5537 | - | 8 | 2026-05-26 |
| MFX550 | - | 7 | 2026-05-26 |
| MFX549 | - | 5 | 2026-05-26 |
| MFX5535 | - | 3 | 2026-05-10 |
| MFX529 | - | 2 | 2026-05-30 |
| MFX455 | - | 2 | 2026-05-21 |
| MFX404 | My Freighter LLC | 2 | 2026-05-17 |
| MFX315 | My Freighter LLC | 2 | 2026-06-02 |
| MFX301 | - | 2 | 2026-04-18 |
| MFX403 | My Freighter LLC | 1 | 2026-05-15 |
| MFX401 | My Freighter LLC | 1 | 2026-05-23 |
| MFX316 | My Freighter LLC | 1 | 2026-06-02 |
| MFX302 | - | 1 | 2026-04-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | MFX316 | IST → FEG | Jun 2, 07:25 UTC | Jun 2, 20:00 UTC | 12h 35m |
| 2026-06-02 | MFX315 | FEG → IST | Jun 2, 04:40 UTC | Jun 2, 05:10 UTC | 30m |
| 2026-06-02 | MFX315 | FEG → IST | Jun 2, 02:35 UTC | Jun 2, 04:05 UTC | 1h 30m |
| 2026-05-30 | MFX529 | - | May 30, 21:45 UTC | May 31, 08:35 UTC | 10h 50m |
| 2026-05-28 | MFX530 | - | May 28, 20:55 UTC | May 29, 07:45 UTC | 10h 50m |
| 2026-05-28 | MFX529 | - | May 28, 06:05 UTC | May 29, 06:00 UTC | 23h 55m |
| 2026-05-28 | MFX5538 | - | May 28, 04:05 UTC | May 28, 22:35 UTC | 18h 30m |
| 2026-05-28 | MFX5538 | - | May 28, 03:20 UTC | May 28, 22:35 UTC | 19h 15m |
| 2026-05-27 | MFX5538 | - | May 27, 22:05 UTC | May 28, 22:00 UTC | 23h 55m |
| 2026-05-27 | MFX5538 | - | May 27, 19:20 UTC | May 28, 07:40 UTC | 12h 20m |
| 2026-05-26 | MFX5537 | - | May 26, 21:00 UTC | May 27, 20:00 UTC | 23h 0m |
| 2026-05-26 | MFX550 | - | May 26, 05:00 UTC | May 26, 21:55 UTC | 16h 55m |
| 2026-05-26 | MFX549 | - | May 26, 01:20 UTC | May 26, 01:44 UTC | 25m |
| 2026-05-26 | MFX549 | - | May 26, 00:04 UTC | May 26, 00:29 UTC | 25m |
| 2026-05-23 | MFX530 | - | May 23, 21:25 UTC | May 24, 08:15 UTC | 10h 50m |
| 2026-05-23 | MFX530 | - | May 23, 12:20 UTC | May 24, 08:15 UTC | 19h 55m |
| 2026-05-23 | MFX401 | TAS → SVO | May 23, 08:50 UTC | May 23, 09:10 UTC | 20m |
| 2026-05-21 | MFX455 | - | May 21, 11:20 UTC | May 21, 16:01 UTC | 4h 40m |
| 2026-05-19 | MFX550 | - | May 19, 07:05 UTC | May 19, 08:30 UTC | 1h 25m |
| 2026-05-19 | MFX549 | - | May 19, 03:10 UTC | May 19, 05:25 UTC | 2h 15m |
| 2026-05-17 | MFX404 | SVO → TAS | May 17, 20:35 UTC | May 17, 21:45 UTC | 1h 10m |
| 2026-05-16 | MFX5537 | - | May 16, 21:15 UTC | May 17, 09:20 UTC | 12h 5m |
| 2026-05-16 | MFX5537 | - | May 16, 08:51 UTC | May 17, 08:00 UTC | 23h 10m |
| 2026-05-15 | MFX403 | TAS → SVO | May 15, 16:55 UTC | May 16, 09:16 UTC | 16h 21m |
| 2026-05-15 | MFX550 | - | May 15, 04:35 UTC | May 15, 17:20 UTC | 12h 44m |
| 2026-05-15 | MFX549 | - | May 15, 01:20 UTC | May 15, 01:35 UTC | 15m |
| 2026-05-14 | MFX455 | - | May 14, 08:00 UTC | May 14, 14:10 UTC | 6h 10m |
| 2026-05-12 | MFX550 | - | May 12, 04:25 UTC | May 12, 04:35 UTC | 10m |
| 2026-05-10 | MFX5536 | - | May 10, 20:09 UTC | May 11, 07:30 UTC | 11h 20m |
| 2026-05-10 | MFX5536 | - | May 10, 08:05 UTC | May 11, 07:30 UTC | 23h 25m |
| 2026-05-10 | MFX5535 | - | May 10, 06:04 UTC | May 11, 06:00 UTC | 23h 55m |
| 2026-05-10 | MFX5538 | - | May 10, 05:00 UTC | May 11, 04:00 UTC | 23h 0m |
| 2026-05-10 | MFX5538 | - | May 10, 00:05 UTC | May 11, 00:00 UTC | 23h 55m |
| 2026-05-09 | MFX5538 | - | May 9, 22:05 UTC | May 10, 21:59 UTC | 23h 55m |
| 2026-05-09 | MFX5538 | - | May 9, 21:05 UTC | May 10, 09:24 UTC | 12h 20m |
| 2026-05-06 | MFX5538 | - | May 6, 19:35 UTC | May 7, 07:55 UTC | 12h 20m |
| 2026-05-06 | MFX5537 | - | May 6, 06:55 UTC | May 7, 06:00 UTC | 23h 4m |
| 2026-05-05 | MFX550 | - | May 5, 04:25 UTC | May 5, 06:00 UTC | 1h 35m |
| 2026-05-04 | MFX5536 | - | May 4, 06:05 UTC | May 5, 00:35 UTC | 18h 31m |
| 2026-05-04 | MFX5536 | - | May 4, 04:05 UTC | May 5, 00:35 UTC | 20h 31m |
| 2026-05-04 | MFX5536 | - | May 4, 02:45 UTC | May 5, 00:35 UTC | 21h 51m |
| 2026-05-03 | MFX5536 | - | May 3, 19:55 UTC | May 4, 07:20 UTC | 11h 25m |
| 2026-05-03 | MFX5535 | - | May 3, 06:05 UTC | May 4, 06:00 UTC | 23h 55m |
| 2026-05-03 | MFX5535 | - | May 3, 05:10 UTC | May 4, 04:00 UTC | 22h 50m |
| 2026-05-02 | MFX530 | - | May 2, 22:05 UTC | May 3, 22:00 UTC | 23h 54m |
| 2026-05-02 | MFX530 | - | May 2, 20:50 UTC | May 3, 20:00 UTC | 23h 9m |
| 2026-05-02 | MFX530 | - | May 2, 12:35 UTC | May 3, 07:45 UTC | 19h 9m |
| 2026-04-29 | MFX5538 | - | Apr 29, 19:45 UTC | Apr 30, 09:10 UTC | 13h 24m |
| 2026-04-28 | MFX550 | - | Apr 28, 04:10 UTC | Apr 28, 05:50 UTC | 1h 40m |
| 2026-04-28 | MFX549 | - | Apr 28, 01:40 UTC | Apr 28, 01:55 UTC | 15m |
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 UK32131 page for operator, model, and routing details .