Apparatus

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sensors Mode-S transponder

680001

ICAO 24-bit transponder address · allocated to Bhutan

Currently assigned to A5-RGF · AIRBUS A-319

Hex
680001
Octal
32000001
Decimal
6,815,745
Country
BT
Tail
A5-RGF
Type
A319
No current signal · last broadcast 11h ago
Flights observed
119
Distinct callsigns
20
Country
BT
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 680001.

Country allocation

The ICAO 24-bit address 680001 falls within the block assigned to Bhutan (BT) by ICAO Annex 10, Volume III. Every aircraft registered in Bhutan 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
DRK541 Druk Air 11 2026-05-28
DRK540 Druk Air 11 2026-05-27
DRK400 Druk Air 9 2026-05-23
DRK202 Druk Air 9 2026-05-13
DRK200 Druk Air 8 2026-05-26
DRK203 Druk Air 7 2026-05-13
DRK201 Druk Air 7 2026-05-26
DRK546 Druk Air 6 2026-05-26
DRK401 Druk Air 6 2026-05-23
DRK152 Druk Air 5 2026-05-05
DRK547 Druk Air 4 2026-05-26
DRK281 Druk Air 4 2026-05-24
DRK141 - 4 2026-05-22
DRK130 Druk Air 4 2026-05-29
DRK301 Druk Air 3 2026-05-18
DRK300 Druk Air 3 2026-05-18
DRK280 Druk Air 3 2026-05-24
DRK153 Druk Air 3 2026-05-05
DRK131 Druk Air 3 2026-04-25
DRK211 Druk Air 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DRK130 IXB → BKK May 29, 11:50 UTCMay 29, 14:30 UTC2h 40m
2026-05-28 DRK541 SIN → GAU May 28, 09:45 UTCMay 28, 09:55 UTC10m
2026-05-28 DRK541 SIN → GAU May 28, 04:35 UTCMay 28, 08:25 UTC3h 50m
2026-05-27 DRK540 GAU → SIN May 27, 03:45 UTCMay 27, 07:25 UTC3h 41m
2026-05-26 DRK547 SIN → PBH May 26, 20:34 UTCMay 27, 00:19 UTC3h 45m
2026-05-26 DRK546 PBH → SIN May 26, 12:54 UTCMay 26, 16:30 UTC3h 35m
2026-05-26 DRK546 PBH → SIN May 26, 11:15 UTCMay 26, 11:24 UTC10m
2026-05-26 DRK201 DEL → PBH May 26, 07:24 UTCMay 26, 08:54 UTC1h 30m
2026-05-26 DRK200 PBH → DEL May 26, 03:40 UTCMay 26, 05:25 UTC1h 45m
2026-05-25 DRK547 SIN → PBH May 25, 20:40 UTCMay 26, 00:29 UTC3h 50m
2026-05-25 DRK546 PBH → SIN May 25, 12:15 UTCMay 25, 16:20 UTC4h 5m
2026-05-25 DRK201 DEL → PBH May 25, 07:10 UTCMay 25, 08:35 UTC1h 25m
2026-05-25 DRK200 PBH → DEL May 25, 03:45 UTCMay 25, 05:25 UTC1h 40m
2026-05-24 DRK200 PBH → DEL May 24, 08:35 UTCMay 25, 05:25 UTC20h 50m
2026-05-24 DRK281 AMD → PBH May 24, 04:20 UTCMay 25, 04:15 UTC23h 55m
2026-05-24 DRK280 PBH → AMD May 24, 03:15 UTCMay 24, 09:25 UTC6h 10m
2026-05-23 DRK401 KTM → PBH May 23, 08:00 UTCMay 23, 08:25 UTC25m
2026-05-23 DRK400 PBH → KTM May 23, 05:45 UTCMay 23, 06:30 UTC45m
2026-05-22 DRK201 DEL → PBH May 22, 10:20 UTCMay 23, 06:30 UTC20h 10m
2026-05-22 DRK200 PBH → DEL May 22, 05:55 UTCMay 22, 07:35 UTC1h 40m
2026-05-22 DRK141 - May 22, 00:25 UTCMay 22, 02:35 UTC2h 10m
2026-05-21 DRK140 - May 21, 13:20 UTCMay 21, 15:45 UTC2h 25m
2026-05-21 DRK201 DEL → PBH May 21, 09:15 UTCMay 21, 10:40 UTC1h 25m
2026-05-21 DRK200 PBH → DEL May 21, 06:20 UTCMay 21, 08:05 UTC1h 45m
2026-05-20 DRK547 SIN → PBH May 20, 20:40 UTCMay 21, 03:20 UTC6h 40m
2026-05-20 DRK546 PBH → SIN May 20, 12:35 UTCMay 20, 16:15 UTC3h 40m
2026-05-20 DRK546 PBH → SIN May 20, 11:05 UTCMay 20, 11:15 UTC10m
2026-05-20 DRK211 CCU → PBH May 20, 07:55 UTCMay 20, 08:30 UTC35m
2026-05-20 DRK210 GLU → CCU May 20, 05:35 UTCMay 20, 06:05 UTC30m
2026-05-19 DRK547 SIN → PBH May 19, 20:40 UTCMay 20, 00:45 UTC4h 5m
2026-05-19 DRK546 PBH → SIN May 19, 02:10 UTCMay 19, 06:10 UTC4h 0m
2026-05-18 DRK301 DAC → PBH May 18, 07:40 UTCMay 18, 08:15 UTC35m
2026-05-18 DRK300 PBH → DAC May 18, 05:50 UTCMay 18, 06:25 UTC35m
2026-05-18 DRK141 - May 18, 00:05 UTCMay 18, 02:15 UTC2h 10m
2026-05-17 DRK140 - May 17, 11:40 UTCMay 17, 14:01 UTC2h 20m
2026-05-17 DRK201 DEL → PBH May 17, 07:30 UTCMay 17, 08:50 UTC1h 20m
2026-05-17 DRK200 PBH → DEL May 17, 04:25 UTCMay 17, 06:05 UTC1h 40m
2026-05-17 DRK401 KTM → PBH May 17, 02:20 UTCMay 17, 02:30 UTC10m
2026-05-16 DRK201 DEL → PBH May 16, 09:01 UTCMay 17, 00:55 UTC15h 54m
2026-05-16 DRK200 PBH → DEL May 16, 05:20 UTCMay 16, 07:35 UTC2h 16m
2026-05-15 DRK201 DEL → PBH May 15, 07:40 UTCMay 15, 09:00 UTC1h 20m
2026-05-14 DRK200 PBH → DEL May 14, 23:50 UTCMay 15, 05:50 UTC6h 0m
2026-05-13 DRK203 DEL → PBH May 13, 23:35 UTCMay 14, 08:25 UTC8h 50m
2026-05-13 DRK202 IXB → DEL May 13, 06:25 UTCMay 13, 08:35 UTC2h 10m
2026-05-13 DRK401 KTM → PBH May 13, 03:15 UTCMay 13, 03:25 UTC10m
2026-05-13 DRK400 PBH → KTM May 13, 01:10 UTCMay 13, 01:20 UTC10m
2026-05-12 DRK400 PBH → KTM May 12, 02:50 UTCMay 12, 03:10 UTC20m
2026-05-10 DRK202 IXB → DEL May 10, 23:44 UTCMay 11, 08:25 UTC8h 40m
2026-05-10 DRK202 IXB → DEL May 10, 07:15 UTCMay 10, 08:10 UTC55m
2026-05-10 DRK202 IXB → DEL May 10, 06:10 UTCMay 10, 06:45 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 A5-RGF page for operator, model, and routing details .

Mode-S 680001 frequently asked

What is Mode-S code 680001?
680001 is an ICAO 24-bit transponder address. Allocated to Bhutan. Assigned to A5-RGF.
Where is Mode-S 680001 registered?
Mode-S code 680001 is allocated to Bhutan (BT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 680001 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 680001, octal 32000001, decimal 6,815,745.
What flights does 680001 operate?
Mode-S 680001 has broadcast 20 distinct callsigns, including DRK541, DRK540, DRK400, DRK202, DRK200.