Apparatus

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sensors Mode-S transponder

800C99

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-IYD · ATR-72-600

Hex
800C99
Octal
40006231
Decimal
8,391,833
Country
IN
Tail
VT-IYD
Type
AT76
No current signal · last broadcast 15h ago
Flights observed
269
Distinct callsigns
20
Country
IN
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 800C99.

Country allocation

The ICAO 24-bit address 800C99 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
IGO8RC - 12 2026-07-08
IGO7197 IndiGo Airlines 11 2026-07-08
IGO7346 - 9 2026-07-11
IGO7345 - 9 2026-07-11
IGO7EK - 7 2026-07-12
IGO7335 - 7 2026-07-12
IGO7171 IndiGo Airlines 6 2026-06-07
IGO6WK - 6 2026-06-07
IGO7HC IndiGo Airlines 5 2026-06-07
IGO7736 IndiGo Airlines 5 2026-06-07
IGO7419 - 5 2026-06-19
IGO7232 IndiGo Airlines 5 2026-05-25
IGO5MA - 5 2026-06-19
IGO7CW IndiGo Airlines 4 2026-05-22
IGO7615 - 4 2026-07-10
IGO7603 IndiGo Airlines 4 2026-07-10
IGO7445 IndiGo Airlines 4 2026-06-07
IGO7166 IndiGo Airlines 4 2026-05-22
IGO7163 IndiGo Airlines 4 2026-05-22
IGO7134 IndiGo Airlines 4 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 IGO7129 - Jul 14, 05:40 UTCJul 14, 05:50 UTC10m
2026-07-13 IGO7129 - Jul 13, 05:25 UTCJul 13, 05:35 UTC10m
2026-07-13 IGO7PC - Jul 13, 04:25 UTCJul 13, 04:40 UTC15m
2026-07-12 IGO7EK - Jul 12, 12:01 UTCJul 12, 12:20 UTC20m
2026-07-12 IGO7335 - Jul 12, 09:40 UTCJul 12, 10:10 UTC30m
2026-07-11 IGO7345 - Jul 11, 02:55 UTCJul 11, 03:25 UTC30m
2026-07-11 IGO7346 - Jul 11, 00:50 UTCJul 11, 01:10 UTC20m
2026-07-10 IGO7615 - Jul 10, 13:45 UTCJul 10, 14:10 UTC25m
2026-07-10 IGO7603 MAA → MYQ Jul 10, 12:20 UTCJul 10, 12:50 UTC30m
2026-07-10 IGO7345 - Jul 10, 02:50 UTCJul 10, 03:20 UTC30m
2026-07-10 IGO7346 - Jul 10, 00:40 UTCJul 10, 01:05 UTC25m
2026-07-09 IGO7EK - Jul 9, 11:50 UTCJul 9, 12:20 UTC30m
2026-07-09 IGO7335 - Jul 9, 10:00 UTCJul 9, 10:30 UTC30m
2026-07-08 IGO8RC - Jul 8, 13:00 UTCJul 8, 13:20 UTC20m
2026-07-08 IGO7197 MAA → CCJ Jul 8, 11:15 UTCJul 8, 11:35 UTC20m
2026-07-07 IGO8RC - Jul 7, 13:20 UTCJul 7, 14:00 UTC40m
2026-07-07 IGO7197 MAA → CCJ Jul 7, 11:35 UTCJul 7, 12:00 UTC25m
2026-07-06 IGO8RC - Jul 6, 12:30 UTCJul 6, 13:15 UTC45m
2026-07-06 IGO7197 MAA → CCJ Jul 6, 11:00 UTCJul 6, 11:25 UTC25m
2026-07-05 IGO8RC - Jul 5, 12:55 UTCJul 5, 13:35 UTC40m
2026-07-05 IGO7197 MAA → CCJ Jul 5, 11:05 UTCJul 5, 11:25 UTC20m
2026-07-04 IGO8RC - Jul 4, 12:55 UTCJul 4, 13:25 UTC30m
2026-07-04 IGO7197 MAA → CCJ Jul 4, 11:20 UTCJul 4, 11:45 UTC25m
2026-07-02 IGO7EK - Jul 2, 12:00 UTCJul 2, 12:25 UTC25m
2026-07-02 IGO7335 - Jul 2, 10:05 UTCJul 2, 10:40 UTC35m
2026-07-01 IGO7615 - Jul 1, 14:05 UTCJul 1, 14:30 UTC25m
2026-07-01 IGO7603 MAA → MYQ Jul 1, 12:45 UTCJul 1, 13:10 UTC25m
2026-07-01 IGO7112 - Jul 1, 10:50 UTCJul 1, 11:10 UTC20m
2026-06-28 IGO7EK - Jun 28, 11:19 UTCJun 28, 11:55 UTC35m
2026-06-28 IGO7335 - Jun 28, 09:10 UTCJun 28, 09:50 UTC40m
2026-06-27 IGO7EK - Jun 27, 11:20 UTCJun 27, 12:04 UTC45m
2026-06-27 IGO7335 - Jun 27, 09:24 UTCJun 27, 10:00 UTC35m
2026-06-25 IGO7EK - Jun 25, 11:44 UTCJun 25, 12:15 UTC30m
2026-06-25 IGO7335 - Jun 25, 09:40 UTCJun 25, 10:15 UTC35m
2026-06-21 IGO7345 - Jun 21, 02:40 UTCJun 21, 03:10 UTC30m
2026-06-21 IGO7346 - Jun 21, 00:34 UTCJun 21, 00:59 UTC25m
2026-06-19 IGO8CH - Jun 19, 13:59 UTCJun 19, 14:44 UTC45m
2026-06-19 IGO419D - Jun 19, 11:04 UTCJun 19, 12:04 UTC1h 0m
2026-06-19 IGO7419 - Jun 19, 02:59 UTCJun 19, 05:34 UTC2h 35m
2026-06-19 IGO5MA - Jun 19, 01:24 UTCJun 19, 02:14 UTC50m
2026-06-18 IGO2WJ - Jun 18, 14:20 UTCJun 18, 15:10 UTC50m
2026-06-18 IGO7FP - Jun 18, 12:10 UTCJun 18, 12:55 UTC45m
2026-06-18 IGO7251 - Jun 18, 10:25 UTCJun 18, 11:10 UTC45m
2026-06-18 IGO7419 - Jun 18, 02:50 UTCJun 18, 03:35 UTC45m
2026-06-18 IGO5MA - Jun 18, 01:30 UTCJun 18, 02:10 UTC40m
2026-06-17 IGO5AK - Jun 17, 15:00 UTCJun 17, 16:05 UTC1h 5m
2026-06-17 IGO7361 BBI → IXR Jun 17, 12:05 UTCJun 17, 12:25 UTC20m
2026-06-17 IGO7419 - Jun 17, 03:05 UTCJun 17, 03:45 UTC40m
2026-06-17 IGO5MA - Jun 17, 01:35 UTCJun 17, 02:15 UTC40m
2026-06-16 IGO7419 - Jun 16, 03:00 UTCJun 16, 03:45 UTC45m

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

Mode-S 800C99 frequently asked

What is Mode-S code 800C99?
800C99 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-IYD.
Where is Mode-S 800C99 registered?
Mode-S code 800C99 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 800C99 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 800C99, octal 40006231, decimal 8,391,833.
What flights does 800C99 operate?
Mode-S 800C99 has broadcast 20 distinct callsigns, including IGO8RC, IGO7197, IGO7346, IGO7345, IGO7EK.