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sensors Mode-S transponder

75021C

ICAO 24-bit transponder address · allocated to Malaysia

Currently assigned to 9M-MXR · BOEING 737-800

Hex
75021C
Octal
35201034
Decimal
7,668,252
Country
MY
Tail
9M-MXR
Type
B738
Broadcasting now · callsign MAS851 · 31,300 ft
Flights observed
418
Distinct callsigns
20
Country
MY
Last broadcast
Jul 26, 23:00 UTC

Current position

75021C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 75021C falls within the block assigned to Malaysia (MY) by ICAO Annex 10, Volume III. Every aircraft registered in Malaysia 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
MAS078 - 11 2026-07-11
MAS725 - 8 2026-07-09
MAS079 - 8 2026-07-12
MAS8685 - 7 2026-07-13
MAS783 - 7 2026-06-26
MAS723 - 7 2026-07-07
MAS8686 - 6 2026-07-04
MAS5001 Malaysia Airlines 6 2026-07-20
MAS178 Malaysia Airlines 6 2026-07-21
MAS8683 - 5 2026-07-11
MAS8681 - 5 2026-07-05
MAS782 - 5 2026-06-26
MAS755 Malaysia Airlines 5 2026-07-26
MAS754 Malaysia Airlines 5 2026-07-26
MAS724 - 5 2026-07-09
MAS722 Malaysia Airlines 5 2026-07-22
MAS391 - 5 2026-06-06
MAS2639 - 5 2026-07-19
MAS2638 Malaysia Airlines 5 2026-07-19
MAS2513 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 MAS602 SIN → KUL Jul 26, 22:30 UTCJul 26, 23:00 UTC30m
2026-07-26 MAS609 KUL → SIN Jul 26, 15:15 UTCJul 26, 15:50 UTC35m
2026-07-26 MAS2717 SBW → KUL Jul 26, 12:20 UTCJul 26, 13:00 UTC40m
2026-07-26 MAS2718 KUL → SBW Jul 26, 08:50 UTCJul 26, 09:15 UTC25m
2026-07-26 MAS755 PNH → KUL Jul 26, 05:30 UTCJul 26, 05:55 UTC25m
2026-07-26 MAS754 KUL → PNH Jul 26, 01:30 UTCJul 26, 01:40 UTC10m
2026-07-25 MAS775 BKK → KUL Jul 25, 12:25 UTCJul 25, 14:15 UTC1h 50m
2026-07-25 MAS774 KUL → BKK Jul 25, 08:35 UTCJul 25, 11:00 UTC2h 25m
2026-07-25 MAS755 PNH → KUL Jul 25, 05:50 UTCJul 25, 06:15 UTC25m
2026-07-25 MAS754 KUL → PNH Jul 25, 01:45 UTCJul 25, 01:55 UTC10m
2026-07-24 MAS1034 JHB → KUL Jul 24, 22:50 UTCJul 24, 23:30 UTC40m
2026-07-24 MAS1063 KUL → JHB Jul 24, 13:30 UTCJul 24, 14:00 UTC30m
2026-07-24 MAS2545 KCH → KUL Jul 24, 07:45 UTCJul 24, 11:35 UTC3h 50m
2026-07-24 MAS787 HKT → KUL Jul 24, 01:45 UTCJul 24, 06:05 UTC4h 20m
2026-07-23 MAS2547 KCH → KUL Jul 23, 14:05 UTCJul 23, 23:30 UTC9h 25m
2026-07-23 MAS720 CGK → KUL Jul 23, 10:50 UTCJul 23, 12:30 UTC1h 40m
2026-07-23 MAS721 KUL → CGK Jul 23, 08:55 UTCJul 23, 09:10 UTC15m
2026-07-23 MAS721 KUL → CGK Jul 23, 07:35 UTCJul 23, 07:55 UTC20m
2026-07-23 MAS755 PNH → KUL Jul 23, 01:20 UTCJul 23, 05:45 UTC4h 25m
2026-07-22 MAS722 CGK → KUL Jul 22, 11:45 UTCJul 22, 13:25 UTC1h 40m
2026-07-22 MAS754 - Jul 22, 01:35 UTCJul 22, 01:45 UTC10m
2026-07-21 MAS178 CMB → KUL Jul 21, 14:30 UTCJul 21, 22:10 UTC7h 40m
2026-07-21 MAS791 HKT → KUL Jul 21, 09:15 UTCJul 21, 12:35 UTC3h 20m
2026-07-21 MAS1437 LGK → KUL Jul 21, 07:25 UTCJul 21, 07:40 UTC15m
2026-07-21 MAS1436 KUL → LGK Jul 21, 05:20 UTCJul 21, 05:35 UTC15m
2026-07-20 MAS1281 - Jul 20, 12:00 UTCJul 20, 12:30 UTC30m
2026-07-20 MAS1276 - Jul 20, 10:35 UTCJul 20, 10:45 UTC10m
2026-07-20 MAS5001 TGG → KUL Jul 20, 04:35 UTCJul 20, 04:50 UTC15m
2026-07-20 MAS5001 TGG → KUL Jul 20, 02:10 UTCJul 20, 02:20 UTC10m
2026-07-19 MAS2639 - Jul 19, 14:40 UTCJul 19, 16:50 UTC2h 10m
2026-07-19 MAS2638 KUL → BKI Jul 19, 11:15 UTCJul 19, 13:25 UTC2h 10m
2026-07-19 MAS620 - Jul 19, 08:45 UTCJul 19, 09:25 UTC40m
2026-07-19 MAS619 - Jul 19, 06:30 UTCJul 19, 07:10 UTC40m
2026-07-19 MAS787 - Jul 19, 04:30 UTCJul 19, 04:40 UTC10m
2026-07-19 MAS786 - Jul 19, 01:35 UTCJul 19, 01:55 UTC20m
2026-07-18 MAS2597 KCH → KUL Jul 18, 10:50 UTCJul 18, 14:55 UTC4h 5m
2026-07-18 MAS794 - Jul 18, 05:10 UTCJul 18, 08:25 UTC3h 15m
2026-07-17 MAS1397 - Jul 17, 11:15 UTCJul 17, 11:39 UTC25m
2026-07-17 MAS1396 - Jul 17, 08:59 UTCJul 17, 09:20 UTC20m
2026-07-17 MAS716 - Jul 17, 05:45 UTCJul 17, 07:25 UTC1h 40m
2026-07-17 MAS717 - Jul 17, 03:45 UTCJul 17, 04:04 UTC20m
2026-07-17 MAS717 - Jul 17, 02:25 UTCJul 17, 03:14 UTC50m
2026-07-16 MAS178 - Jul 16, 14:25 UTCJul 16, 22:05 UTC7h 40m
2026-07-16 MAS2607 - Jul 16, 08:50 UTCJul 16, 11:05 UTC2h 15m
2026-07-16 MAS2614 - Jul 16, 05:10 UTCJul 16, 07:30 UTC2h 20m
2026-07-14 MAS1155 - Jul 14, 11:50 UTCJul 14, 12:25 UTC35m
2026-07-14 MAS1152 - Jul 14, 09:55 UTCJul 14, 10:35 UTC40m
2026-07-14 MAS2513 - Jul 14, 03:20 UTCJul 14, 07:20 UTC4h 0m
2026-07-14 MAS1133 - Jul 14, 00:05 UTCJul 14, 00:40 UTC35m
2026-07-13 MAS1166 - Jul 13, 13:20 UTCJul 13, 13:55 UTC35m

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 9M-MXR page for operator, model, and routing details .

Mode-S 75021C frequently asked

What is Mode-S code 75021C?
75021C is an ICAO 24-bit transponder address. Allocated to Malaysia. Assigned to 9M-MXR.
Where is Mode-S 75021C registered?
Mode-S code 75021C is allocated to Malaysia (MY). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 75021C broadcasting right now?
Yes. Mode-S 75021C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 75021C, octal 35201034, decimal 7,668,252.
What flights does 75021C operate?
Mode-S 75021C has broadcast 20 distinct callsigns, including MAS078, MAS725, MAS079, MAS8685, MAS783.