Apparatus

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sensors Mode-S transponder

A8712A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N643JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP

Hex
A8712A
Octal
52070452
Decimal
11,039,018
Country
US
Tail
N643JB
Type
A320
Broadcasting now · callsign JBU2876 · 38,000 ft
Flights observed
150
Distinct callsigns
20
Country
US
Last broadcast
20m ago

Current position

A8712A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8712A falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
JBU553 JetBlue Airways 5 2026-05-11
JBU1457 - 4 2026-04-13
JBU2251 JetBlue Airways 3 2026-04-15
JBU2204 JetBlue Airways 3 2026-04-14
JBU143 JetBlue Airways 3 2026-05-15
JBU1103 - 3 2026-04-14
JBU987 JetBlue Airways 2 2026-04-26
JBU967 JetBlue Airways 2 2026-04-16
JBU959 JetBlue Airways 2 2026-05-08
JBU831 JetBlue Airways 2 2026-05-28
JBU814 JetBlue Airways 2 2026-04-22
JBU767 JetBlue Airways 2 2026-05-06
JBU754 JetBlue Airways 2 2026-05-03
JBU534 JetBlue Airways 2 2026-05-07
JBU522 JetBlue Airways 2 2026-05-05
JBU506 JetBlue Airways 2 2026-05-03
JBU390 JetBlue Airways 2 2026-05-13
JBU337 JetBlue Airways 2 2026-04-20
JBU322 JetBlue Airways 2 2026-04-28
JBU304 JetBlue Airways 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU1923 DCA → MCO May 29, 15:35 UTCMay 30, 00:30 UTC8h 55m
2026-05-28 JBU2098 PVR → JFK May 28, 21:33 UTCMay 29, 20:30 UTC22h 58m
2026-05-28 JBU831 BOS → LGA May 28, 14:05 UTCMay 28, 16:20 UTC2h 15m
2026-05-28 JBU831 BOS → LGA May 28, 14:00 UTCMay 29, 12:25 UTC22h 25m
2026-05-28 JBU953 JFK → PBI May 28, 10:10 UTCMay 28, 12:30 UTC2h 20m
2026-05-27 JBU1867 HPN → PBI May 27, 12:15 UTCMay 27, 14:25 UTC2h 10m
2026-05-27 JBU1867 HPN → PBI May 27, 12:12 UTCMay 28, 10:30 UTC22h 18m
2026-05-26 JBU304 SJU → JFK May 26, 01:20 UTCMay 26, 02:04 UTC45m
2026-05-25 JBU304 SJU → JFK May 25, 22:34 UTCMay 25, 22:49 UTC15m
2026-05-25 JBU1475 BDL → SJU May 25, 15:20 UTCMay 25, 18:40 UTC3h 20m
2026-05-24 JBU350 GND → JFK May 24, 19:36 UTCMay 25, 18:30 UTC22h 54m
2026-05-24 JBU149 JFK → GND May 24, 13:50 UTCMay 24, 14:20 UTC30m
2026-05-24 JBU149 JFK → GND May 24, 13:50 UTCMay 25, 12:05 UTC22h 15m
2026-05-24 JBU282 LGB → LAS May 24, 00:50 UTCMay 24, 03:55 UTC3h 5m
2026-05-23 JBU281 JFK → IAH May 23, 18:45 UTCMay 23, 22:55 UTC4h 10m
2026-05-23 JBU384 MCO → JFK May 23, 14:30 UTCMay 23, 16:30 UTC2h 0m
2026-05-22 JBU2282 DFW → FLL May 22, 11:19 UTCMay 23, 03:45 UTC16h 26m
2026-05-21 JBU2694 JFK → BOS May 21, 22:50 UTCMay 21, 23:25 UTC35m
2026-05-21 JBU2694 JFK → BOS May 21, 22:40 UTCMay 22, 22:20 UTC23h 40m
2026-05-21 JBU1693 FLL → NAS May 21, 20:15 UTCMay 21, 20:35 UTC20m
2026-05-21 JBU8602 BOS → YMX May 21, 16:05 UTCMay 21, 18:10 UTC2h 5m
2026-05-17 JBU8599 JFK → SAL May 17, 13:25 UTCMay 17, 15:40 UTC2h 15m
2026-05-16 JBU2760 SXM → FLL May 16, 19:40 UTCMay 16, 22:20 UTC2h 40m
2026-05-16 JBU2761 BOS → SJU May 16, 15:20 UTCMay 16, 17:40 UTC2h 20m
2026-05-16 JBU1601 JFK → FLL May 16, 11:25 UTCMay 16, 13:46 UTC2h 20m
2026-05-15 JBU144 PBI → EWR May 15, 14:20 UTCMay 15, 14:30 UTC10m
2026-05-15 JBU144 PBI → EWR May 15, 14:19 UTCMay 16, 12:31 UTC22h 12m
2026-05-15 JBU143 EWR → PBI May 15, 10:17 UTCMay 16, 03:35 UTC17h 18m
2026-05-15 JBU143 EWR → PBI May 15, 10:20 UTCMay 15, 12:35 UTC2h 15m
2026-05-14 JBU1016 JFK → BOS May 14, 12:50 UTCMay 14, 22:10 UTC9h 20m
2026-05-13 JBU1229 EWR → CUN May 13, 11:40 UTCMay 13, 15:10 UTC3h 30m
2026-05-13 JBU1229 EWR → CUN May 13, 11:39 UTCMay 13, 20:05 UTC8h 27m
2026-05-13 JBU390 SJU → EWR May 13, 00:05 UTCMay 13, 01:00 UTC55m
2026-05-12 JBU390 SJU → EWR May 12, 21:10 UTCMay 12, 21:25 UTC15m
2026-05-12 JBU1731 SLC → LAX May 12, 14:20 UTCMay 12, 14:35 UTC15m
2026-05-11 JBU40 MDE → FLL May 11, 18:39 UTCMay 12, 16:40 UTC22h 2m
2026-05-11 JBU1703 SJU → MDE May 11, 14:39 UTCMay 12, 14:30 UTC23h 52m
2026-05-11 JBU553 FLL → SJU May 11, 12:45 UTCMay 11, 13:00 UTC15m
2026-05-11 JBU553 FLL → SJU May 11, 10:55 UTCMay 11, 11:15 UTC20m
2026-05-11 JBU553 FLL → SJU May 11, 10:50 UTCMay 11, 21:45 UTC10h 56m
2026-05-10 JBU1799 LGA → MCO May 10, 23:09 UTCMay 11, 01:05 UTC1h 55m
2026-05-10 JBU1800 FLL → ORF May 10, 20:05 UTCMay 10, 21:54 UTC1h 50m
2026-05-10 JBU2795 FLL → CUN May 10, 14:09 UTCMay 10, 18:25 UTC4h 15m
2026-05-10 JBU1145 RIC → FLL May 10, 10:19 UTCMay 10, 12:19 UTC2h 0m
2026-05-09 JBU2033 BOS → IAH May 9, 12:35 UTCMay 9, 16:30 UTC3h 55m
2026-05-09 JBU2033 BOS → IAH May 9, 12:35 UTCMay 10, 12:19 UTC23h 45m
2026-05-09 JBU382 FLL → LGA May 9, 10:05 UTCMay 9, 11:15 UTC1h 10m
2026-05-08 JBU959 BDL → FLL May 8, 11:09 UTCMay 8, 14:00 UTC2h 50m
2026-05-08 JBU959 BDL → FLL May 8, 11:09 UTCMay 9, 10:30 UTC23h 21m
2026-05-07 JBU534 SFO → BOS May 7, 23:45 UTCMay 8, 02:04 UTC2h 20m

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 N643JB page for operator, model, and routing details .

Mode-S A8712A frequently asked

What is Mode-S code A8712A?
A8712A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N643JB.
Where is Mode-S A8712A registered?
Mode-S code A8712A is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A8712A broadcasting right now?
Yes. Mode-S A8712A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8712A, octal 52070452, decimal 11,039,018.
What flights does A8712A operate?
Mode-S A8712A has broadcast 20 distinct callsigns, including JBU553, JBU1457, JBU2251, JBU2204, JBU143.