Apparatus

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sensors Mode-S transponder

801681

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-BXY · BOEING 737 MAX 8

Hex
801681
Octal
40013201
Decimal
8,394,369
Country
IN
Tail
VT-BXY
Type
B38M
No current signal · last broadcast 7h ago
Flights observed
475
Distinct callsigns
20
Country
IN
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 801681.

Country allocation

The ICAO 24-bit address 801681 falls within the block assigned to India (IN) by ICAO Annex 10, Volume III. Every aircraft registered in India 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
AXB1996 - 10 2026-07-14
AXB2819 - 8 2026-05-15
AXB1640 - 8 2026-07-07
AXB1581 Air India Express 8 2026-05-29
AXB2064 - 7 2026-07-03
AXB1521 - 7 2026-07-14
AXB2915 - 6 2026-05-18
AXB2914 Air India Express 6 2026-05-18
AXB1894 Air India Express 6 2026-05-15
AXB1604 Air India Express 6 2026-05-24
AXB1498 Air India Express 6 2026-05-24
AXB1373 - 6 2026-07-06
AXB1039 Air India Express 6 2026-06-24
AXB2932 Air India Express 5 2026-07-05
AXB2931 - 5 2026-07-05
AXB2681 Air India Express 5 2026-05-02
AXB2680 Air India Express 5 2026-05-02
AXB242 Air India Express 5 2026-04-30
AXB241 Air India Express 5 2026-04-30
AXB2065 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AXB1532 - Jul 14, 15:00 UTCJul 14, 15:40 UTC40m
2026-07-14 AXB1996 - Jul 14, 13:15 UTCJul 14, 13:50 UTC35m
2026-07-14 AXB1996 - Jul 14, 11:30 UTCJul 14, 12:10 UTC40m
2026-07-14 AXB1752 - Jul 14, 09:55 UTCJul 14, 10:35 UTC40m
2026-07-14 AXB1522 - Jul 14, 08:20 UTCJul 14, 08:55 UTC35m
2026-07-14 AXB1521 - Jul 14, 06:45 UTCJul 14, 07:20 UTC35m
2026-07-14 AXB5701 - Jul 14, 04:45 UTCJul 14, 05:30 UTC45m
2026-07-13 AXB5701 - Jul 13, 06:30 UTCJul 14, 05:30 UTC23h 0m
2026-07-13 AXB2782 - Jul 13, 00:50 UTCJul 13, 04:35 UTC3h 45m
2026-07-12 AXB1532 - Jul 12, 15:45 UTCJul 12, 16:25 UTC40m
2026-07-12 AXB1996 - Jul 12, 13:50 UTCJul 12, 14:25 UTC35m
2026-07-12 AXB1996 - Jul 12, 12:10 UTCJul 12, 12:45 UTC35m
2026-07-12 AXB1752 - Jul 12, 10:25 UTCJul 12, 11:05 UTC40m
2026-07-12 AXB1522 - Jul 12, 08:25 UTCJul 12, 09:10 UTC45m
2026-07-12 AXB1521 - Jul 12, 06:45 UTCJul 12, 07:25 UTC40m
2026-07-12 AXB2782 CCU → CCU Jul 12, 00:40 UTCJul 12, 05:25 UTC4h 45m
2026-07-11 AXB1532 - Jul 11, 14:55 UTCJul 11, 15:30 UTC35m
2026-07-11 AXB1996 - Jul 11, 13:15 UTCJul 11, 13:50 UTC35m
2026-07-11 AXB1996 - Jul 11, 11:40 UTCJul 11, 12:20 UTC40m
2026-07-11 AXB1752 - Jul 11, 10:10 UTCJul 11, 10:50 UTC40m
2026-07-11 AXB1522 - Jul 11, 08:20 UTCJul 11, 09:05 UTC45m
2026-07-11 AXB1521 - Jul 11, 06:40 UTCJul 11, 07:20 UTC40m
2026-07-11 AXB2782 CCU → CCU Jul 11, 00:50 UTCJul 11, 05:20 UTC4h 30m
2026-07-10 AXB1532 - Jul 10, 15:25 UTCJul 10, 16:00 UTC35m
2026-07-10 AXB1996 - Jul 10, 13:30 UTCJul 10, 14:00 UTC30m
2026-07-10 AXB1996 - Jul 10, 11:45 UTCJul 10, 12:25 UTC40m
2026-07-10 AXB1752 - Jul 10, 10:10 UTCJul 10, 10:45 UTC35m
2026-07-10 AXB1522 - Jul 10, 08:30 UTCJul 10, 09:10 UTC40m
2026-07-10 AXB1521 - Jul 10, 06:50 UTCJul 10, 07:25 UTC35m
2026-07-10 AXB2782 CCU → CCU Jul 10, 00:50 UTCJul 10, 05:40 UTC4h 50m
2026-07-09 AXB1532 - Jul 9, 15:10 UTCJul 9, 15:45 UTC35m
2026-07-09 AXB1996 - Jul 9, 13:15 UTCJul 9, 13:50 UTC35m
2026-07-09 AXB1996 - Jul 9, 11:35 UTCJul 9, 12:15 UTC40m
2026-07-09 AXB1752 - Jul 9, 10:05 UTCJul 9, 10:40 UTC35m
2026-07-09 IX1522 - Jul 9, 08:20 UTCJul 9, 09:05 UTC45m
2026-07-09 AXB1521 - Jul 9, 06:50 UTCJul 9, 07:25 UTC35m
2026-07-09 AXB1521 CCU → CCU Jul 9, 06:00 UTCJul 9, 06:20 UTC20m
2026-07-09 AXB1521 CCU → CCU Jul 9, 00:50 UTCJul 9, 05:55 UTC5h 5m
2026-07-08 AXB1369 JAI → GAU Jul 8, 11:05 UTCJul 8, 12:00 UTC55m
2026-07-08 AXB1514 - Jul 8, 08:55 UTCJul 8, 09:40 UTC45m
2026-07-08 AXB1131 - Jul 8, 03:00 UTCJul 8, 04:25 UTC1h 25m
2026-07-08 AXB1131 - Jul 8, 02:05 UTCJul 8, 02:20 UTC15m
2026-07-07 AXB1640 - Jul 7, 16:45 UTCJul 7, 17:15 UTC30m
2026-07-07 AXB1640 - Jul 7, 15:55 UTCJul 7, 16:05 UTC10m
2026-07-07 AXB81N - Jul 7, 14:25 UTCJul 7, 14:35 UTC10m
2026-07-07 AXB81N - Jul 7, 13:20 UTCJul 7, 13:30 UTC10m
2026-07-07 AXB2362 - Jul 7, 05:25 UTCJul 7, 05:35 UTC10m
2026-07-07 AXB2362 - Jul 7, 03:40 UTCJul 7, 03:50 UTC10m
2026-07-07 AXB2361 - Jul 7, 00:10 UTCJul 7, 00:20 UTC10m
2026-07-06 AXB1373 - Jul 6, 15:40 UTCJul 6, 16:00 UTC20m

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 VT-BXY page for operator, model, and routing details .

Mode-S 801681 frequently asked

What is Mode-S code 801681?
801681 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-BXY.
Where is Mode-S 801681 registered?
Mode-S code 801681 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801681 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801681, octal 40013201, decimal 8,394,369.
What flights does 801681 operate?
Mode-S 801681 has broadcast 20 distinct callsigns, including AXB1996, AXB2819, AXB1640, AXB1581, AXB2064.