Apparatus

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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
Broadcasting now · callsign ANA8442 · 13,525 ft
Flights observed
134
Distinct callsigns
20
Country
JP
Last broadcast
1h ago

Current position

861B20 is currently broadcasting. Map zoomed to live position.

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 All Nippon Airways 15 2026-05-29
ANA8511 All Nippon Airways 13 2026-05-27
ANA8490 All Nippon Airways 10 2026-05-28
ANA8475 All Nippon Airways 10 2026-05-29
ANA8512 All Nippon Airways 9 2026-05-27
ANA8476 All Nippon Airways 9 2026-05-29
ANA8442 All Nippon Airways 9 2026-05-30
ANA8441 All Nippon Airways 9 2026-05-30
ANA8516 - 7 2026-05-15
ANA8515 - 6 2026-05-14
ANA8427 All Nippon Airways 6 2026-05-10
ANA8403 All Nippon Airways 5 2026-05-26
ANA8526 - 4 2026-05-25
ANA8428 All Nippon Airways 4 2026-05-17
ANA8525 - 3 2026-05-25
ANA8501 - 3 2026-05-20
ANA8404 All Nippon Airways 3 2026-05-12
ANA8514 All Nippon Airways 2 2026-05-24
ANA8513 All Nippon Airways 2 2026-05-24
ANA8448 All Nippon Airways 2 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ANA8442 TPE → NRT May 30, 10:25 UTCMay 30, 10:45 UTC20m
2026-05-30 ANA8441 NRT → TPE May 30, 04:55 UTCMay 30, 08:15 UTC3h 20m
2026-05-29 ANA8489 NRT → CAN May 29, 12:15 UTCMay 29, 22:55 UTC10h 40m
2026-05-29 ANA8476 ICN → NRT May 29, 05:40 UTCMay 29, 07:30 UTC1h 50m
2026-05-29 ANA8475 NRT → ICN May 29, 01:05 UTCMay 29, 03:10 UTC2h 5m
2026-05-28 ANA8490 CAN → NRT May 28, 21:35 UTCMay 28, 22:50 UTC1h 15m
2026-05-28 ANA8489 NRT → CAN May 28, 12:15 UTCMay 28, 13:45 UTC1h 30m
2026-05-28 ANA8442 TPE → NRT May 28, 06:05 UTCMay 28, 08:55 UTC2h 50m
2026-05-28 ANA8441 NRT → TPE May 28, 01:00 UTCMay 28, 04:00 UTC3h 0m
2026-05-27 ANA8512 HKG → NRT May 27, 18:45 UTCMay 27, 22:45 UTC4h 0m
2026-05-27 ANA8511 NRT → HKG May 27, 12:10 UTCMay 27, 16:10 UTC4h 0m
2026-05-26 ANA8403 NRT → PVG May 26, 13:00 UTCMay 26, 21:04 UTC8h 5m
2026-05-26 ANA8442 TPE → NRT May 26, 06:14 UTCMay 26, 09:04 UTC2h 50m
2026-05-26 ANA8441 NRT → TPE May 26, 03:19 UTCMay 26, 03:55 UTC35m
2026-05-26 ANA8441 NRT → TPE May 26, 00:49 UTCMay 26, 02:00 UTC1h 10m
2026-05-25 ANA8526 - May 25, 18:00 UTCMay 25, 21:09 UTC3h 10m
2026-05-25 ANA8525 - May 25, 11:55 UTCMay 25, 14:55 UTC3h 0m
2026-05-24 ANA8527 NRT → PEK May 24, 14:25 UTCMay 24, 21:30 UTC7h 5m
2026-05-24 ANA8514 HKG → NRT May 24, 08:05 UTCMay 24, 12:00 UTC3h 55m
2026-05-24 ANA8513 NRT → HKG May 24, 02:00 UTCMay 24, 06:00 UTC4h 0m
2026-05-23 ANA8526 - May 23, 12:15 UTCMay 23, 21:05 UTC8h 51m
2026-05-23 ANA8476 ICN → NRT May 23, 04:55 UTCMay 23, 06:45 UTC1h 50m
2026-05-23 ANA8475 NRT → ICN May 23, 01:05 UTCMay 23, 03:05 UTC2h 0m
2026-05-22 ANA8490 CAN → NRT May 22, 21:10 UTCMay 22, 22:30 UTC1h 20m
2026-05-22 ANA8489 NRT → CAN May 22, 12:20 UTCMay 22, 13:45 UTC1h 25m
2026-05-20 ANA8490 CAN → NRT May 20, 21:40 UTCMay 20, 23:05 UTC1h 25m
2026-05-20 ANA8489 NRT → CAN May 20, 13:00 UTCMay 20, 14:25 UTC1h 25m
2026-05-20 ANA8501 NRT → NRT May 20, 03:40 UTCMay 20, 10:45 UTC7h 6m
2026-05-19 ANA8490 CAN → NRT May 19, 21:00 UTCMay 19, 22:25 UTC1h 25m
2026-05-19 ANA8489 NRT → CAN May 19, 12:20 UTCMay 19, 13:45 UTC1h 25m
2026-05-19 ANA8442 TPE → NRT May 19, 06:15 UTCMay 19, 09:15 UTC3h 0m
2026-05-19 ANA8441 NRT → TPE May 19, 03:35 UTCMay 19, 03:55 UTC20m
2026-05-19 ANA8441 NRT → TPE May 19, 01:00 UTCMay 19, 02:10 UTC1h 10m
2026-05-18 ANA8512 HKG → NRT May 18, 18:45 UTCMay 18, 22:45 UTC4h 0m
2026-05-18 ANA8511 NRT → HKG May 18, 12:15 UTCMay 18, 16:15 UTC4h 0m
2026-05-17 ANA8428 TAO → NRT May 17, 14:25 UTCMay 17, 22:15 UTC7h 50m
2026-05-17 ANA8476 ICN → NRT May 17, 05:00 UTCMay 17, 07:00 UTC2h 0m
2026-05-17 ANA8475 NRT → ICN May 17, 01:25 UTCMay 17, 03:10 UTC1h 45m
2026-05-16 ANA8448 HAN → NRT May 16, 11:05 UTCMay 16, 23:40 UTC12h 35m
2026-05-16 ANA8476 ICN → NRT May 16, 04:50 UTCMay 16, 06:55 UTC2h 6m
2026-05-16 ANA8475 NRT → ICN May 16, 01:00 UTCMay 16, 02:45 UTC1h 45m
2026-05-15 ANA8428 TAO → NRT May 15, 13:50 UTCMay 15, 21:25 UTC7h 34m
2026-05-15 ANA8516 - May 15, 02:10 UTCMay 15, 11:40 UTC9h 30m
2026-05-14 ANA8512 HKG → NRT May 14, 20:35 UTCMay 15, 00:30 UTC3h 55m
2026-05-14 ANA8511 NRT → HKG May 14, 13:50 UTCMay 14, 18:10 UTC4h 20m
2026-05-14 ANA8515 - May 14, 02:10 UTCMay 14, 11:20 UTC9h 10m
2026-05-13 ANA8490 CAN → NRT May 13, 21:30 UTCMay 13, 22:50 UTC1h 20m
2026-05-13 ANA8489 NRT → CAN May 13, 12:30 UTCMay 13, 13:55 UTC1h 25m
2026-05-12 ANA8404 PVG → NRT May 12, 13:00 UTCMay 12, 21:05 UTC8h 5m
2026-05-12 ANA8442 TPE → NRT May 12, 06:05 UTCMay 12, 08:50 UTC2h 45m

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?
Yes. Mode-S 861B20 is currently airborne.
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, ANA8490, ANA8475, ANA8512.