Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A23200

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N240WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A23200
Octal
50431000
Decimal
10,629,632
Country
US
Tail
N240WN
Type
B737
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
770
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A23200.

Country allocation

The ICAO 24-bit address A23200 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
SWA3588 Southwest Airlines 9 2026-06-01
SWA375 - 7 2026-06-29
SWA3616 Southwest Airlines 7 2026-05-07
SWA1080 Southwest Airlines 7 2026-06-06
SWA3006 - 6 2026-07-01
SWA3563 - 5 2026-07-13
SWA2625 Southwest Airlines 5 2026-07-23
SWA1840 - 5 2026-06-28
SWA105 Southwest Airlines 5 2026-07-26
SWA736 Southwest Airlines 4 2026-05-23
SWA500 Southwest Airlines 4 2026-04-17
SWA4724 Southwest Airlines 4 2026-06-05
SWA422 Southwest Airlines 4 2026-05-19
SWA3591 Southwest Airlines 4 2026-04-14
SWA3493 - 4 2026-07-20
SWA2665 Southwest Airlines 4 2026-05-09
SWA2586 Southwest Airlines 4 2026-05-04
SWA2091 - 4 2026-07-17
SWA1572 - 4 2026-07-19
SWA1339 Southwest Airlines 4 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1323 STL → SRQ Jul 26, 20:35 UTCJul 26, 21:45 UTC1h 10m
2026-07-26 SWA105 DEN → ABQ Jul 26, 18:20 UTCJul 26, 19:20 UTC1h 0m
2026-07-26 SWA105 DEN → ABQ Jul 26, 15:50 UTCJul 26, 17:15 UTC1h 25m
2026-07-26 SWA1943 ATL → MSY Jul 26, 13:10 UTCJul 26, 14:50 UTC1h 40m
2026-07-26 SWA1227 ONT → OAK Jul 26, 11:10 UTCJul 26, 11:45 UTC35m
2026-07-26 SWA4217 BOS → STL Jul 26, 02:45 UTCJul 26, 03:20 UTC35m
2026-07-25 SWA109 PVR → HOU Jul 25, 21:50 UTCJul 25, 23:00 UTC1h 10m
2026-07-25 SWA109 PVR → HOU Jul 25, 21:00 UTCJul 25, 22:59 UTC2h 0m
2026-07-25 SWA108 HOU → PVR Jul 25, 17:50 UTCJul 25, 18:55 UTC1h 5m
2026-07-25 SWA108 HOU → PVR Jul 25, 17:48 UTCJul 25, 19:35 UTC1h 47m
2026-07-24 SWA109 PVR → HOU Jul 24, 21:00 UTCJul 24, 22:57 UTC1h 58m
2026-07-24 SWA514 DEN → PVR Jul 24, 17:10 UTCJul 24, 23:00 UTC5h 50m
2026-07-24 SWA2384 SAN → SJC Jul 24, 13:45 UTCJul 24, 14:40 UTC55m
2026-07-24 SWA2384 SAN → SJC Jul 24, 11:15 UTCJul 24, 12:40 UTC1h 25m
2026-07-24 SWA1481 MSY → FLL Jul 24, 04:30 UTCJul 24, 06:10 UTC1h 40m
2026-07-24 SWA2573 BNA → BOS Jul 24, 01:10 UTCJul 24, 03:20 UTC2h 10m
2026-07-23 SWA1285 MEM → ATL Jul 23, 21:30 UTCJul 23, 23:45 UTC2h 15m
2026-07-23 SWA1285 MEM → ATL Jul 23, 19:15 UTCJul 23, 20:20 UTC1h 5m
2026-07-23 SWA3868 MCI → SAN Jul 23, 17:15 UTCJul 23, 18:20 UTC1h 5m
2026-07-23 SWA3868 MCI → SAN Jul 23, 17:10 UTCJul 23, 18:15 UTC1h 5m
2026-07-23 SWA3715 - Jul 23, 15:35 UTCJul 23, 16:20 UTC45m
2026-07-23 SWA2403 - Jul 23, 12:35 UTCJul 23, 13:25 UTC50m
2026-07-23 SWA2625 STL → MCO Jul 23, 03:45 UTCJul 23, 04:30 UTC45m
2026-07-23 SWA2625 STL → MCO Jul 23, 03:44 UTCJul 23, 04:22 UTC38m
2026-07-23 SWA2625 STL → MCO Jul 23, 00:30 UTCJul 23, 02:40 UTC2h 10m
2026-07-22 SWA389 MSP → BWI Jul 22, 19:10 UTCJul 22, 22:50 UTC3h 40m
2026-07-22 SWA389 MSP → BWI Jul 22, 19:07 UTCJul 22, 22:49 UTC3h 43m
2026-07-22 SWA269 MCI → DEN Jul 22, 15:15 UTCJul 22, 17:35 UTC2h 20m
2026-07-22 SWA4093 - Jul 22, 13:00 UTCJul 22, 13:45 UTC45m
2026-07-22 SWA4093 MDW → CMH Jul 22, 12:58 UTCJul 22, 13:40 UTC42m
2026-07-22 SWA4276 - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-21 SWA4544 LAS → PDX Jul 21, 20:25 UTCJul 21, 22:00 UTC1h 35m
2026-07-21 SWA4544 LAS → PDX Jul 21, 20:21 UTCJul 21, 21:56 UTC1h 35m
2026-07-21 SWA4662 STL → CMH Jul 21, 18:30 UTCJul 21, 19:10 UTC40m
2026-07-21 SWA2712 DEN → AUS Jul 21, 16:25 UTCJul 21, 17:35 UTC1h 10m
2026-07-21 SWA2712 DEN → AUS Jul 21, 16:20 UTCJul 21, 17:29 UTC1h 9m
2026-07-21 SWA2712 DEN → AUS Jul 21, 13:55 UTCJul 21, 14:50 UTC55m
2026-07-21 SWA4582 BOS → MCO Jul 21, 11:35 UTCJul 21, 12:25 UTC50m
2026-07-21 SWA2335 HOU → LGA Jul 21, 04:20 UTCJul 21, 06:40 UTC2h 20m
2026-07-21 SWA2335 HOU → LGA Jul 21, 02:00 UTCJul 21, 03:15 UTC1h 15m
2026-07-21 SWA2434 LAS → OAK Jul 21, 00:10 UTCJul 21, 00:55 UTC45m
2026-07-20 SWA3792 LAS → BWI Jul 20, 22:00 UTCJul 20, 23:15 UTC1h 15m
2026-07-20 SWA3792 LAS → BWI Jul 20, 21:59 UTCJul 20, 22:57 UTC59m
2026-07-20 SWA1700 SJC → SNA Jul 20, 20:00 UTCJul 20, 21:10 UTC1h 10m
2026-07-20 SWA1700 SJC → SNA Jul 20, 19:59 UTCJul 20, 21:08 UTC1h 9m
2026-07-20 SWA1700 SJC → SNA Jul 20, 16:55 UTCJul 20, 18:40 UTC1h 45m
2026-07-20 SWA3493 SAN → DEN Jul 20, 13:49 UTCJul 20, 15:52 UTC2h 4m
2026-07-20 SWA3493 - Jul 20, 13:50 UTCJul 20, 15:55 UTC2h 5m
2026-07-20 SWA294 HOU → ELP Jul 20, 05:15 UTCJul 20, 05:55 UTC40m
2026-07-20 SWA921 BNA → LGA Jul 20, 00:35 UTCJul 20, 04:10 UTC3h 35m

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 N240WN page for operator, model, and routing details .

Mode-S A23200 frequently asked

What is Mode-S code A23200?
A23200 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N240WN.
Where is Mode-S A23200 registered?
Mode-S code A23200 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 A23200 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A23200, octal 50431000, decimal 10,629,632.
What flights does A23200 operate?
Mode-S A23200 has broadcast 20 distinct callsigns, including SWA3588, SWA375, SWA3616, SWA1080, SWA3006.