Apparatus

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sensors Mode-S transponder

801621

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-IQM · AIRBUS A-320neo

Hex
801621
Octal
40013041
Decimal
8,394,273
Country
IN
Tail
VT-IQM
Type
A20N
No current signal · last broadcast 42m ago
Flights observed
215
Distinct callsigns
20
Country
IN
Last broadcast
42m ago

Last known position

Most recent position reported by Mode-S 801621.

Country allocation

The ICAO 24-bit address 801621 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
IGO5045 IndiGo Airlines 53 2026-05-29
IGO648 IndiGo Airlines 37 2026-05-28
IGO5053 IndiGo Airlines 21 2026-05-29
IGO434C - 20 2026-05-29
IGO273 IndiGo Airlines 19 2026-05-29
IGO5273 IndiGo Airlines 18 2026-05-29
IGO646W - 4 2026-05-23
IGO675H - 2 2026-05-23
IGO6674 IndiGo Airlines 2 2026-05-23
IGO6634 IndiGo Airlines 2 2026-05-19
IGO661C IndiGo Airlines 2 2026-05-23
IGO6595 IndiGo Airlines 2 2026-05-21
IGO6549 IndiGo Airlines 2 2026-05-23
IGO6523 IndiGo Airlines 2 2026-05-23
IGO646H IndiGo Airlines 2 2026-05-23
IGO5243 IndiGo Airlines 2 2026-05-30
IGO15RY IndiGo Airlines 2 2026-05-21
IGO1037 IndiGo Airlines 2 2026-05-18
IGO939C - 1 2026-05-19
IGO771C IndiGo Airlines 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 IGO6224 GAU → BOM May 30, 03:40 UTCMay 30, 04:15 UTC35m
2026-05-30 IGO5243 BOM → AMD May 30, 01:35 UTCMay 30, 02:20 UTC45m
2026-05-29 IGO5243 BOM → AMD May 29, 23:55 UTCMay 30, 00:05 UTC10m
2026-05-29 IGO5053 IDR → BOM May 29, 15:50 UTCMay 29, 16:05 UTC15m
2026-05-29 IGO5273 BOM → BDQ May 29, 13:15 UTCMay 29, 13:30 UTC15m
2026-05-29 IGO434C - May 29, 11:15 UTCMay 29, 12:05 UTC50m
2026-05-29 IGO273 BOM → HSR May 29, 09:30 UTCMay 29, 10:10 UTC40m
2026-05-29 IGO5045 MAA → DEL May 29, 02:05 UTCMay 29, 08:10 UTC6h 5m
2026-05-28 IGO5053 IDR → BOM May 28, 16:15 UTCMay 28, 16:30 UTC15m
2026-05-28 IGO5273 BOM → BDQ May 28, 13:45 UTCMay 28, 14:00 UTC15m
2026-05-28 IGO434C - May 28, 12:00 UTCMay 28, 13:00 UTC1h 0m
2026-05-28 IGO273 BOM → HSR May 28, 10:30 UTCMay 28, 10:55 UTC25m
2026-05-28 IGO648 BOM → BLR May 28, 08:40 UTCMay 28, 09:05 UTC25m
2026-05-28 IGO5045 MAA → DEL May 28, 02:25 UTCMay 28, 07:45 UTC5h 20m
2026-05-27 IGO5053 IDR → BOM May 27, 16:00 UTCMay 27, 16:15 UTC15m
2026-05-27 IGO5273 BOM → BDQ May 27, 13:30 UTCMay 27, 13:40 UTC10m
2026-05-27 IGO434C - May 27, 11:20 UTCMay 27, 12:10 UTC50m
2026-05-27 IGO273 BOM → HSR May 27, 09:45 UTCMay 27, 10:15 UTC30m
2026-05-27 IGO5045 MAA → DEL May 27, 02:14 UTCMay 27, 08:20 UTC6h 6m
2026-05-26 IGO5053 IDR → BOM May 26, 13:34 UTCMay 26, 16:50 UTC3h 15m
2026-05-26 IGO434C - May 26, 11:30 UTCMay 26, 12:30 UTC1h 0m
2026-05-26 IGO273 BOM → HSR May 26, 09:49 UTCMay 26, 10:25 UTC35m
2026-05-26 IGO648 BOM → BLR May 26, 07:45 UTCMay 26, 07:59 UTC15m
2026-05-26 IGO5045 MAA → DEL May 26, 02:15 UTCMay 26, 06:49 UTC4h 35m
2026-05-25 IGO5053 IDR → BOM May 25, 16:30 UTCMay 25, 16:45 UTC15m
2026-05-25 IGO5273 BOM → BDQ May 25, 14:00 UTCMay 25, 14:10 UTC10m
2026-05-25 IGO434C - May 25, 12:05 UTCMay 25, 13:00 UTC55m
2026-05-25 IGO273 BOM → HSR May 25, 10:30 UTCMay 25, 10:45 UTC15m
2026-05-25 IGO648 BOM → BLR May 25, 08:00 UTCMay 25, 08:25 UTC25m
2026-05-25 IGO5045 MAA → DEL May 25, 02:10 UTCMay 25, 07:05 UTC4h 55m
2026-05-24 IGO5053 IDR → BOM May 24, 16:10 UTCMay 24, 16:25 UTC15m
2026-05-24 IGO5273 BOM → BDQ May 24, 13:40 UTCMay 24, 13:50 UTC10m
2026-05-24 IGO434C - May 24, 11:30 UTCMay 24, 12:15 UTC45m
2026-05-24 IGO273 BOM → HSR May 24, 09:50 UTCMay 24, 10:30 UTC40m
2026-05-24 IGO648 BOM → BLR May 24, 07:35 UTCMay 24, 07:45 UTC10m
2026-05-24 IGO5045 MAA → DEL May 24, 02:10 UTCMay 24, 06:35 UTC4h 25m
2026-05-23 IGO646W - May 23, 16:40 UTCMay 23, 17:25 UTC45m
2026-05-23 IGO6549 BOM → IXE May 23, 13:40 UTCMay 23, 13:50 UTC10m
2026-05-23 IGO6523 IXE → BOM May 23, 12:00 UTCMay 23, 12:20 UTC20m
2026-05-23 IGO675H - May 23, 06:35 UTCMay 23, 06:50 UTC15m
2026-05-23 IGO6674 BOM → IXE May 23, 03:35 UTCMay 23, 04:20 UTC45m
2026-05-23 IGO646H MAA → CMB May 23, 02:00 UTCMay 23, 02:15 UTC15m
2026-05-23 IGO661C CCU → MAA May 23, 00:00 UTCMay 23, 00:20 UTC20m
2026-05-22 IGO646W - May 22, 17:00 UTCMay 22, 17:40 UTC40m
2026-05-22 IGO6523 IXE → BOM May 22, 11:20 UTCMay 22, 11:55 UTC36m
2026-05-22 IGO675H - May 22, 06:30 UTCMay 22, 06:45 UTC15m
2026-05-22 IGO6674 BOM → IXE May 22, 03:30 UTCMay 22, 03:40 UTC10m
2026-05-22 IGO646H MAA → CMB May 22, 02:05 UTCMay 22, 02:20 UTC15m
2026-05-22 IGO661C CCU → MAA May 22, 00:10 UTCMay 22, 00:30 UTC20m
2026-05-21 IGO378M - May 21, 16:30 UTCMay 21, 17:10 UTC40m

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

Mode-S 801621 frequently asked

What is Mode-S code 801621?
801621 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-IQM.
Where is Mode-S 801621 registered?
Mode-S code 801621 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801621 broadcasting right now?
No active broadcast right now. Last signal was 42m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801621, octal 40013041, decimal 8,394,273.
What flights does 801621 operate?
Mode-S 801621 has broadcast 20 distinct callsigns, including IGO5045, IGO648, IGO5053, IGO434C, IGO273.