Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

861B20

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA603A · BOEING 767-300

Hex
861B20
Octal
41415440
Decimal
8,788,768
Country
JP
Tail
JA603A
Type
B763
No current signal · last broadcast 1h ago
Flights observed
259
Distinct callsigns
20
Country
JP
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 861B20.

Country allocation

The ICAO 24-bit address 861B20 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 20 distinct

Callsign Airline Flights Last seen
ANA8489 - 26 2026-07-11
ANA8511 All Nippon Airways 21 2026-07-09
ANA8475 - 21 2026-07-08
ANA8476 - 20 2026-07-08
ANA8490 - 19 2026-07-11
ANA8512 - 16 2026-07-09
ANA8441 - 15 2026-07-01
ANA8442 - 14 2026-07-01
ANA8427 - 11 2026-07-13
ANA8516 - 10 2026-07-14
ANA8515 - 10 2026-07-09
ANA8501 - 9 2026-07-11
ANA8403 All Nippon Airways 8 2026-06-14
ANA8526 - 7 2026-07-13
ANA8525 - 7 2026-07-13
ANA8513 - 7 2026-07-12
ANA8517 All Nippon Airways 6 2026-07-14
ANA8514 - 5 2026-07-12
ANA8404 - 5 2026-07-12
ANA8428 All Nippon Airways 4 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ANA8517 NRT → PVG Jul 14, 14:15 UTCJul 14, 15:50 UTC1h 35m
2026-07-14 ANA8516 - Jul 14, 02:15 UTCJul 14, 11:40 UTC9h 25m
2026-07-13 ANA8526 - Jul 13, 18:00 UTCJul 13, 21:20 UTC3h 20m
2026-07-13 ANA8525 - Jul 13, 12:15 UTCJul 13, 13:55 UTC1h 40m
2026-07-13 ANA8427 - Jul 13, 00:10 UTCJul 13, 07:50 UTC7h 40m
2026-07-12 ANA8404 - Jul 12, 14:20 UTCJul 12, 22:15 UTC7h 55m
2026-07-12 ANA8514 HKG → NRT Jul 12, 07:45 UTCJul 12, 11:45 UTC4h 0m
2026-07-12 ANA8513 - Jul 12, 01:25 UTCJul 12, 05:10 UTC3h 45m
2026-07-11 ANA8490 - Jul 11, 19:05 UTCJul 11, 23:20 UTC4h 15m
2026-07-11 ANA8489 - Jul 11, 16:15 UTCJul 11, 16:25 UTC10m
2026-07-11 ANA8489 - Jul 11, 12:40 UTCJul 11, 14:15 UTC1h 35m
2026-07-11 ANA8501 - Jul 11, 03:45 UTCJul 11, 10:20 UTC6h 35m
2026-07-10 ANA8518 - Jul 10, 14:20 UTCJul 10, 22:00 UTC7h 41m
2026-07-10 ANA8501 - Jul 10, 04:55 UTCJul 10, 11:50 UTC6h 55m
2026-07-09 ANA8512 HKG → NRT Jul 9, 20:25 UTCJul 10, 00:15 UTC3h 50m
2026-07-09 ANA8511 NRT → HKG Jul 9, 13:45 UTCJul 9, 17:40 UTC3h 55m
2026-07-09 ANA8516 - Jul 9, 08:50 UTCJul 9, 11:50 UTC3h 0m
2026-07-09 ANA8515 - Jul 9, 02:30 UTCJul 9, 04:05 UTC1h 35m
2026-07-08 ANA8490 - Jul 8, 12:30 UTCJul 8, 23:05 UTC10h 35m
2026-07-08 ANA8476 - Jul 8, 04:55 UTCJul 8, 06:50 UTC1h 55m
2026-07-08 ANA8475 - Jul 8, 01:00 UTCJul 8, 02:55 UTC1h 55m
2026-07-07 ANA8490 - Jul 7, 20:40 UTCJul 7, 22:25 UTC1h 45m
2026-07-07 ANA8489 - Jul 7, 12:45 UTCJul 7, 14:15 UTC1h 30m
2026-07-07 ANA8476 ICN → NRT Jul 7, 05:05 UTCJul 7, 07:10 UTC2h 5m
2026-07-07 ANA8475 - Jul 7, 01:00 UTCJul 7, 03:00 UTC2h 0m
2026-07-06 ANA8427 NRT → TAO Jul 6, 13:40 UTCJul 6, 21:10 UTC7h 30m
2026-07-05 ANA8517 NRT → PVG Jul 5, 14:05 UTCJul 5, 21:20 UTC7h 15m
2026-07-05 ANA8514 HKG → NRT Jul 5, 08:10 UTCJul 5, 12:05 UTC3h 55m
2026-07-05 ANA8513 - Jul 5, 05:45 UTCJul 5, 06:10 UTC25m
2026-07-05 ANA8513 - Jul 5, 02:00 UTCJul 5, 05:10 UTC3h 10m
2026-07-04 ANA8525 - Jul 4, 12:05 UTCJul 4, 21:15 UTC9h 10m
2026-07-04 ANA8476 - Jul 4, 05:00 UTCJul 4, 06:50 UTC1h 50m
2026-07-04 ANA8475 - Jul 4, 01:05 UTCJul 4, 03:05 UTC2h 0m
2026-07-03 ANA8517 NRT → PVG Jul 3, 14:20 UTCJul 3, 21:55 UTC7h 35m
2026-07-03 ANA8515 - Jul 3, 02:25 UTCJul 3, 11:20 UTC8h 55m
2026-07-02 ANA8512 HKG → NRT Jul 2, 20:30 UTCJul 3, 00:15 UTC3h 45m
2026-07-02 ANA8511 NRT → HKG Jul 2, 14:05 UTCJul 2, 18:15 UTC4h 10m
2026-07-02 ANA8501 NRT → NRT Jul 2, 05:00 UTCJul 2, 12:10 UTC7h 10m
2026-07-01 ANA8489 - Jul 1, 12:35 UTCJul 1, 22:45 UTC10h 10m
2026-07-01 ANA8442 TPE → NRT Jul 1, 06:10 UTCJul 1, 09:00 UTC2h 50m
2026-07-01 ANA8441 - Jul 1, 01:00 UTCJul 1, 04:15 UTC3h 15m
2026-06-30 ANA8490 - Jun 30, 20:40 UTCJun 30, 22:20 UTC1h 40m
2026-06-30 ANA8489 - Jun 30, 12:10 UTCJun 30, 13:50 UTC1h 40m
2026-06-30 ANA8442 TPE → NRT Jun 30, 06:35 UTCJun 30, 09:30 UTC2h 55m
2026-06-30 ANA8441 NRT → TPE Jun 30, 00:55 UTCJun 30, 04:05 UTC3h 10m
2026-06-29 ANA8427 NRT → TAO Jun 29, 13:39 UTCJun 29, 21:19 UTC7h 40m
2026-06-28 ANA8427 NRT → TAO Jun 28, 14:45 UTCJun 28, 22:04 UTC7h 20m
2026-06-28 ANA8514 HKG → NRT Jun 28, 09:25 UTCJun 28, 13:14 UTC3h 50m
2026-06-28 ANA8513 - Jun 28, 06:10 UTCJun 28, 06:34 UTC25m
2026-06-28 ANA8513 - Jun 28, 02:10 UTCJun 28, 05:34 UTC3h 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 JA603A page for operator, model, and routing details .

Mode-S 861B20 frequently asked

What is Mode-S code 861B20?
861B20 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA603A.
Where is Mode-S 861B20 registered?
Mode-S code 861B20 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861B20 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861B20, octal 41415440, decimal 8,788,768.
What flights does 861B20 operate?
Mode-S 861B20 has broadcast 20 distinct callsigns, including ANA8489, ANA8511, ANA8475, ANA8476, ANA8490.