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sensors Mode-S transponder

A2725D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N257JX · EMBRAER ERJ-135 · operated by DELUX PUBLIC CHARTER LLC

Hex
A2725D
Octal
50471135
Decimal
10,646,109
Country
US
Tail
N257JX
Type
E135
Broadcasting now · callsign JSX161 · 5,900 ft
Flights observed
259
Distinct callsigns
20
Country
US
Last broadcast
40m ago

Current position

A2725D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2725D 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
JSX655 - 9 2026-07-09
JSX654 JSX Air 9 2026-07-09
JSX303 JSX Air 8 2026-06-03
JSX302 JSX Air 8 2026-06-03
JSX111 - 7 2026-07-13
JSX110 - 7 2026-07-12
JSX109 - 7 2026-07-12
JSX108 - 7 2026-07-13
JSX651 JSX Air 6 2026-05-28
JSX650 JSX Air 6 2026-05-28
JSX323 - 6 2026-07-09
JSX622 JSX Air 5 2026-05-30
JSX321 JSX Air 5 2026-06-01
JSX320 JSX Air 5 2026-06-01
JSX311 JSX Air 5 2026-05-18
JSX310 JSX Air 5 2026-05-18
JSX132 JSX Air 5 2026-06-01
JSX625 JSX Air 4 2026-06-02
JSX624 JSX Air 4 2026-06-02
JSX623 JSX Air 4 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JSX161 - Jul 14, 00:55 UTCJul 14, 01:10 UTC15m
2026-07-13 JSX346 - Jul 13, 22:45 UTCJul 13, 23:45 UTC1h 0m
2026-07-13 JSX345 - Jul 13, 20:40 UTCJul 13, 22:00 UTC1h 20m
2026-07-13 JSX160 - Jul 13, 18:55 UTCJul 13, 19:40 UTC45m
2026-07-13 JSX301 - Jul 13, 16:40 UTCJul 13, 17:25 UTC45m
2026-07-13 JSX300 - Jul 13, 15:00 UTCJul 13, 15:40 UTC40m
2026-07-13 JSX108 BUR → LAS Jul 13, 03:40 UTCJul 13, 04:20 UTC40m
2026-07-13 JSX111 LAS → BUR Jul 13, 02:01 UTCJul 13, 02:45 UTC45m
2026-07-12 JSX110 BUR → LAS Jul 12, 23:35 UTCJul 13, 00:20 UTC45m
2026-07-12 JSX109 LAS → BUR Jul 12, 22:00 UTCJul 12, 22:45 UTC45m
2026-07-12 JSX317 - Jul 12, 19:30 UTCJul 12, 20:20 UTC50m
2026-07-12 JSX316 - Jul 12, 17:55 UTCJul 12, 18:40 UTC45m
2026-07-12 JSX104 BUR → LAS Jul 12, 16:10 UTCJul 12, 16:50 UTC40m
2026-07-12 JSX105 LAS → BUR Jul 12, 14:10 UTCJul 12, 14:55 UTC45m
2026-07-12 JSX161 - Jul 12, 00:35 UTCJul 12, 01:30 UTC55m
2026-07-11 JSX346 - Jul 11, 22:35 UTCJul 11, 23:35 UTC1h 0m
2026-07-11 JSX345 - Jul 11, 20:25 UTCJul 11, 21:45 UTC1h 20m
2026-07-11 JSX160 - Jul 11, 18:05 UTCJul 11, 18:55 UTC50m
2026-07-11 JSX627 - Jul 11, 02:20 UTCJul 11, 03:05 UTC45m
2026-07-11 JSX626 LAS → CLD Jul 11, 00:40 UTCJul 11, 01:20 UTC40m
2026-07-10 JSX319 - Jul 10, 22:50 UTCJul 10, 23:30 UTC40m
2026-07-10 JSX318 - Jul 10, 21:25 UTCJul 10, 22:05 UTC40m
2026-07-09 JSX655 OAK → LAS Jul 9, 22:15 UTCJul 9, 23:25 UTC1h 10m
2026-07-09 JSX180 BUR → OAK Jul 9, 20:20 UTCJul 9, 21:15 UTC55m
2026-07-09 JSX181 OAK → BUR Jul 9, 18:40 UTCJul 9, 19:30 UTC50m
2026-07-09 JSX654 LAS → OAK Jul 9, 16:30 UTCJul 9, 17:40 UTC1h 10m
2026-07-09 JSX323 - Jul 9, 02:10 UTCJul 9, 02:55 UTC45m
2026-07-09 JSX323 - Jul 9, 00:55 UTCJul 9, 01:35 UTC40m
2026-07-08 JSX130 BUR → LAS Jul 8, 22:30 UTCJul 8, 23:10 UTC40m
2026-07-08 JSX129 - Jul 8, 20:45 UTCJul 8, 21:30 UTC45m
2026-07-08 JSX627 CLD → LAS Jul 8, 18:30 UTCJul 8, 19:20 UTC50m
2026-07-08 JSX626 LAS → CLD Jul 8, 16:45 UTCJul 8, 17:25 UTC40m
2026-07-07 JSX415 - Jul 7, 23:15 UTCJul 7, 23:55 UTC40m
2026-07-07 JSX411 LAS → SCF Jul 7, 00:10 UTCJul 7, 00:50 UTC40m
2026-07-06 JSX410 SCF → LAS Jul 6, 22:20 UTCJul 6, 23:05 UTC45m
2026-07-03 JSX409 LAS → SCF Jul 3, 03:50 UTCJul 3, 04:30 UTC40m
2026-07-03 JSX408 - Jul 3, 02:20 UTCJul 3, 03:00 UTC40m
2026-07-03 JSX411 LAS → SCF Jul 3, 00:45 UTCJul 3, 01:25 UTC40m
2026-07-02 JSX410 - Jul 2, 22:30 UTCJul 2, 23:10 UTC40m
2026-06-29 JSX477 - Jun 29, 21:44 UTCJun 29, 22:35 UTC50m
2026-06-29 JSX476 - Jun 29, 20:00 UTCJun 29, 20:59 UTC1h 0m
2026-06-29 JSX751 - Jun 29, 18:10 UTCJun 29, 19:00 UTC50m
2026-06-29 JSX750 - Jun 29, 16:29 UTCJun 29, 17:34 UTC1h 5m
2026-06-05 JSX9801 OAK → LAS Jun 5, 13:45 UTCJun 5, 14:25 UTC40m
2026-06-03 JSX303 SNA → LAS Jun 3, 21:25 UTCJun 3, 22:10 UTC45m
2026-06-03 JSX302 LAS → SNA Jun 3, 20:00 UTCJun 3, 20:40 UTC40m
2026-06-03 JSX655 OAK → LAS Jun 3, 17:35 UTCJun 3, 18:45 UTC1h 10m
2026-06-03 JSX654 LAS → OAK Jun 3, 15:30 UTCJun 3, 16:40 UTC1h 10m
2026-06-03 JSX323 LAX → LAS Jun 3, 00:45 UTCJun 3, 01:30 UTC45m
2026-06-02 JSX322 LAS → LAX Jun 2, 23:20 UTCJun 3, 00:00 UTC40m

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 N257JX page for operator, model, and routing details .

Mode-S A2725D frequently asked

What is Mode-S code A2725D?
A2725D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N257JX.
Where is Mode-S A2725D registered?
Mode-S code A2725D 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 A2725D broadcasting right now?
Yes. Mode-S A2725D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2725D, octal 50471135, decimal 10,646,109.
What flights does A2725D operate?
Mode-S A2725D has broadcast 20 distinct callsigns, including JSX655, JSX654, JSX303, JSX302, JSX111.