sensors Mode-S transponder

06A121

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-ANE · AIRBUS A-350-1000

Hex
06A121
Octal
01520441
Decimal
434,465
Country
QA
Tail
A7-ANE
Type
A35K
No current signal · last broadcast 5h ago
Flights observed
85
Distinct callsigns
20
Country
QA
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 06A121.

Country allocation

The ICAO 24-bit address 06A121 falls within the block assigned to Qatar (QA) by ICAO Annex 10, Volume III. Every aircraft registered in Qatar 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
QTR20V Qatar Airways 10 2026-05-17
QTR20R Qatar Airways 7 2026-05-28
QTR98P Qatar Airways 6 2026-05-03
QTR773 - 5 2026-04-14
QTR774 Qatar Airways 4 2026-04-15
QTR40X - 4 2026-05-18
QTR15Q Qatar Airways 4 2026-05-09
QTR21L Qatar Airways 3 2026-05-16
QTR17E - 3 2026-05-29
QTR87Q Qatar Airways 2 2026-05-18
QTR818 Qatar Airways 2 2026-05-24
QTR7P Qatar Airways 2 2026-05-01
QTR706 Qatar Airways 2 2026-05-10
QTR6W Qatar Airways 2 2026-04-24
QTR572 Qatar Airways 2 2026-05-06
QTR52N Qatar Airways 2 2026-04-28
QTR27R - 2 2026-05-19
QTR18F Qatar Airways 2 2026-05-22
QTR9W Qatar Airways 1 2026-04-20
QTR93W Qatar Airways 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 QTR65B DFW → DOH May 29, 22:55 UTCMay 29, 23:35 UTC40m
2026-05-29 QTR93W TRV → DOH May 29, 19:50 UTCMay 29, 20:35 UTC45m
2026-05-29 QTR17E JFK → DOH May 29, 02:40 UTCMay 29, 14:45 UTC12h 5m
2026-05-28 QTR20R DOH → JFK May 28, 10:45 UTCMay 28, 21:15 UTC10h 30m
2026-05-27 QTR20R DOH → JFK May 27, 22:40 UTCMay 28, 21:15 UTC22h 35m
2026-05-27 QTR20R DOH → JFK May 27, 19:25 UTCMay 28, 15:20 UTC19h 55m
2026-05-27 QTR16M AMS → DOH May 27, 12:30 UTCMay 28, 12:15 UTC23h 45m
2026-05-27 QTR74V DOH → ATL May 27, 03:04 UTCMay 27, 08:10 UTC5h 5m
2026-05-26 QTR17E - May 26, 02:35 UTCMay 26, 14:55 UTC12h 20m
2026-05-25 QTR20R DOH → JFK May 25, 10:45 UTCMay 25, 21:49 UTC11h 4m
2026-05-24 QTR20R DOH → JFK May 24, 23:15 UTCMay 25, 21:49 UTC22h 35m
2026-05-24 QTR20R DOH → JFK May 24, 20:20 UTCMay 25, 15:35 UTC19h 15m
2026-05-24 QTR20R DOH → JFK May 24, 20:05 UTCMay 25, 15:35 UTC19h 30m
2026-05-24 QTR815 HKG → DOH May 24, 18:15 UTCMay 24, 18:30 UTC15m
2026-05-24 QTR818 DOH → HKG May 24, 07:25 UTCMay 24, 07:55 UTC30m
2026-05-24 QTR818 DOH → HKG May 24, 02:10 UTCMay 24, 05:25 UTC3h 15m
2026-05-23 QTR65R SEA → DOH May 23, 03:35 UTCMay 23, 15:50 UTC12h 15m
2026-05-22 QTR18F BUD → DOH May 22, 20:00 UTCMay 22, 22:00 UTC2h 0m
2026-05-22 QTR18F BUD → DOH May 22, 11:20 UTCMay 22, 19:55 UTC8h 36m
2026-05-19 QTR27R - May 19, 11:00 UTCMay 19, 21:45 UTC10h 45m
2026-05-18 QTR40X - May 18, 20:55 UTCMay 19, 07:00 UTC10h 5m
2026-05-18 QTR87Q ORD → DOH May 18, 01:40 UTCMay 18, 14:20 UTC12h 40m
2026-05-17 QTR20V DOH → ORD May 17, 09:45 UTCMay 17, 22:01 UTC12h 15m
2026-05-16 QTR21L LAX → LGG May 16, 15:31 UTCMay 16, 21:10 UTC5h 40m
2026-05-15 QTR27R - May 15, 10:55 UTCMay 15, 21:55 UTC10h 59m
2026-05-14 QTR40X - May 14, 20:40 UTCMay 15, 06:50 UTC10h 10m
2026-05-14 QTR40X - May 14, 00:20 UTCMay 14, 21:30 UTC21h 10m
2026-05-13 QTR780 GRU → DOH May 13, 23:35 UTCMay 14, 21:30 UTC21h 55m
2026-05-13 QTR779 DOH → GRU May 13, 14:15 UTCMay 13, 15:50 UTC1h 35m
2026-05-12 QTR87Q ORD → DOH May 12, 02:55 UTCMay 12, 11:20 UTC8h 25m
2026-05-10 QTR706 JFK → DOH May 10, 06:40 UTCMay 10, 18:49 UTC12h 10m
2026-05-09 QTR15Q DOH → JFK May 9, 12:35 UTCMay 10, 02:20 UTC13h 45m
2026-05-08 QTR706 JFK → DOH May 8, 09:39 UTCMay 8, 19:30 UTC9h 50m
2026-05-07 QTR15Q DOH → JFK May 7, 21:50 UTCMay 8, 05:24 UTC7h 35m
2026-05-07 QTR15Q DOH → JFK May 7, 15:25 UTCMay 7, 20:05 UTC4h 40m
2026-05-06 QTR15Q DOH → JFK May 6, 23:30 UTCMay 7, 20:05 UTC20h 35m
2026-05-06 QTR572 DOH → BLR May 6, 21:00 UTCMay 6, 21:35 UTC35m
2026-05-06 QTR63A AMS → DOH May 6, 07:45 UTCMay 6, 13:50 UTC6h 5m
2026-05-06 QTR61T DOH → LHR May 6, 00:20 UTCMay 6, 05:25 UTC5h 5m
2026-05-05 QTR17E - May 5, 02:40 UTCMay 5, 14:25 UTC11h 45m
2026-05-04 QTR4E DOH → BNE May 4, 07:25 UTCMay 4, 20:55 UTC13h 31m
2026-05-03 QTR32N DOH → SJJ May 3, 23:20 UTCMay 4, 03:05 UTC3h 45m
2026-05-03 QTR572 DOH → BLR May 3, 17:50 UTCMay 3, 21:10 UTC3h 20m
2026-05-03 QTR98P DOH → IAD May 3, 00:45 UTCMay 3, 13:45 UTC12h 59m
2026-05-02 QTR20V DOH → ORD May 2, 07:10 UTCMay 2, 21:20 UTC14h 10m
2026-05-01 QTR21L LAX → LGG May 1, 15:25 UTCMay 1, 21:30 UTC6h 5m
2026-05-01 QTR7P PHL → DOH May 1, 05:10 UTCMay 1, 11:55 UTC6h 45m
2026-04-30 QTR29F LHR → DOH Apr 30, 07:30 UTCApr 30, 13:40 UTC6h 10m
2026-04-29 QTR40C DOH → LHR Apr 29, 22:15 UTCApr 30, 05:10 UTC6h 54m
2026-04-28 QTR53Y - Apr 28, 20:55 UTCApr 29, 03:24 UTC6h 30m

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 A7-ANE page for operator, model, and routing details .

Mode-S 06A121 frequently asked

What is Mode-S code 06A121?
06A121 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-ANE.
Where is Mode-S 06A121 registered?
Mode-S code 06A121 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A121 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A121, octal 01520441, decimal 434,465.
What flights does 06A121 operate?
Mode-S 06A121 has broadcast 20 distinct callsigns, including QTR20V, QTR20R, QTR98P, QTR773, QTR774.