sensors Mode-S transponder

801523

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-IMV · AIRBUS A-321neo

Hex
801523
Octal
40012443
Decimal
8,394,019
Country
IN
Tail
VT-IMV
Type
A21N
No current signal · last broadcast 15h ago
Flights observed
14
Distinct callsigns
12
Country
IN
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 801523.

Country allocation

The ICAO 24-bit address 801523 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 12 distinct

Callsign Airline Flights Last seen
IGO6399 - 2 2026-04-13
IGO5342 - 2 2026-04-14
IGO6491 - 1 2026-04-13
IGO6437 IndiGo Airlines 1 2026-04-13
IGO6232 - 1 2026-04-14
IGO6132 - 1 2026-04-13
IGO502F - 1 2026-04-14
IGO369M - 1 2026-04-13
IGO245C IndiGo Airlines 1 2026-04-13
IGO225K - 1 2026-04-13
IGO2203 - 1 2026-04-13
IGO2126 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 IGO6232 - Apr 14, 10:40 UTCApr 14, 11:05 UTC25m
2026-04-14 IGO502F - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 IGO5342 - Apr 14, 07:10 UTCApr 14, 08:10 UTC1h 0m
2026-04-14 IGO5342 - Apr 14, 05:30 UTCApr 14, 07:10 UTC1h 40m
2026-04-13 IGO2203 - Apr 13, 23:25 UTCApr 13, 23:40 UTC15m
2026-04-13 IGO245C PNQ → DEL Apr 13, 21:30 UTCApr 13, 22:15 UTC45m
2026-04-13 IGO225K - Apr 13, 17:30 UTCApr 13, 18:05 UTC35m
2026-04-13 IGO2126 - Apr 13, 15:05 UTCApr 13, 15:45 UTC40m
2026-04-13 IGO6437 DEL → GWL Apr 13, 11:05 UTCApr 13, 11:35 UTC30m
2026-04-13 IGO6491 - Apr 13, 08:35 UTCApr 13, 09:15 UTC40m
2026-04-13 IGO6132 - Apr 13, 06:20 UTCApr 13, 07:00 UTC40m
2026-04-13 IGO6399 - Apr 13, 04:20 UTCApr 13, 04:40 UTC20m
2026-04-13 IGO6399 - Apr 13, 03:55 UTCApr 13, 04:40 UTC45m
2026-04-13 IGO369M - Apr 13, 00:40 UTCApr 13, 04:15 UTC3h 35m

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-IMV page for operator, model, and routing details .

Mode-S 801523 frequently asked

What is Mode-S code 801523?
801523 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-IMV.
Where is Mode-S 801523 registered?
Mode-S code 801523 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801523 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801523, octal 40012443, decimal 8,394,019.
What flights does 801523 operate?
Mode-S 801523 has broadcast 12 distinct callsigns, including IGO6399, IGO5342, IGO6491, IGO6437, IGO6232.