sensors Mode-S transponder

84655A

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA136A · AIRBUS A-321neo

Hex
84655A
Octal
41062532
Decimal
8,676,698
Country
JP
Tail
JA136A
Type
A21N
Broadcasting now · callsign ANA552 · 28,000 ft
Flights observed
6
Distinct callsigns
5
Country
JP
Last broadcast
12h ago

Current position

84655A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 84655A falls within the block assigned to Japan (JP) by ICAO Annex 10, Volume III. Every aircraft registered in Japan 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
ANA577 - 2 2026-04-13
ANA84 - 1 2026-04-13
ANA559 - 1 2026-04-14
ANA2155 - 1 2026-04-13
ANA2154 All Nippon Airways 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 ANA559 HND → HKD Apr 14, 09:55 UTCApr 14, 10:55 UTC1h 0m
2026-04-13 ANA84 - Apr 13, 12:25 UTCApr 13, 13:40 UTC1h 15m
2026-04-13 ANA2155 - Apr 13, 09:15 UTCApr 13, 10:45 UTC1h 30m
2026-04-13 ANA2154 CTS → NRT Apr 13, 04:55 UTCApr 13, 06:15 UTC1h 20m
2026-04-13 ANA577 - Apr 13, 00:20 UTCApr 13, 01:20 UTC1h 0m
2026-04-12 ANA577 - Apr 12, 23:55 UTCApr 13, 01:20 UTC1h 25m

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 JA136A page for operator, model, and routing details .

Mode-S 84655A frequently asked

What is Mode-S code 84655A?
84655A is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA136A.
Where is Mode-S 84655A registered?
Mode-S code 84655A is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 84655A broadcasting right now?
Yes. Mode-S 84655A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 84655A, octal 41062532, decimal 8,676,698.
What flights does 84655A operate?
Mode-S 84655A has broadcast 5 distinct callsigns, including ANA577, ANA84, ANA559, ANA2155, ANA2154.