sensors Mode-S transponder

801590

ICAO 24-bit transponder address · allocated to India

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

Hex
801590
Octal
40012620
Decimal
8,394,128
Country
IN
Tail
VT-RTB
Type
A21N
Broadcasting now · callsign AXB146J · 36,000 ft
Flights observed
6
Distinct callsigns
5
Country
IN
Last broadcast
17h ago

Current position

801590 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 801590 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 5 distinct

Callsign Airline Flights Last seen
AXB1617 - 2 2026-04-14
AXB1464 - 1 2026-04-14
AXB1236 - 1 2026-04-13
AXB1231 - 1 2026-04-13
AXB1090 - 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 AXB1617 - Apr 14, 07:10 UTCApr 14, 07:35 UTC25m
2026-04-14 AXB1617 - Apr 14, 06:50 UTCApr 14, 07:10 UTC20m
2026-04-14 AXB1464 - Apr 14, 05:15 UTCApr 14, 05:40 UTC25m
2026-04-13 AXB1231 - Apr 13, 14:40 UTCApr 13, 15:30 UTC50m
2026-04-13 AXB1090 - Apr 13, 08:20 UTCApr 13, 08:45 UTC25m
2026-04-13 AXB1236 - Apr 13, 05:40 UTCApr 13, 06:25 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-RTB page for operator, model, and routing details .

Mode-S 801590 frequently asked

What is Mode-S code 801590?
801590 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-RTB.
Where is Mode-S 801590 registered?
Mode-S code 801590 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801590 broadcasting right now?
Yes. Mode-S 801590 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801590, octal 40012620, decimal 8,394,128.
What flights does 801590 operate?
Mode-S 801590 has broadcast 5 distinct callsigns, including AXB1617, AXB1464, AXB1236, AXB1231, AXB1090.