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sensors Mode-S transponder

A1C2F1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N212WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1C2F1
Octal
50341361
Decimal
10,601,201
Country
US
Tail
N212WN
Type
B737
Broadcasting now · callsign SWA4964 · 6,675 ft
Flights observed
638
Distinct callsigns
20
Country
US
Last broadcast
54m ago

Current position

A1C2F1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1C2F1 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
SWA103 - 6 2026-06-27
SWA694 - 5 2026-07-07
SWA4724 - 5 2026-07-03
SWA3354 Southwest Airlines 5 2026-05-02
SWA923 Southwest Airlines 4 2026-05-29
SWA57 Southwest Airlines 4 2026-06-16
SWA5048 - 4 2026-07-13
SWA3684 Southwest Airlines 4 2026-05-09
SWA30 Southwest Airlines 4 2026-06-01
SWA2599 Southwest Airlines 4 2026-04-17
SWA2350 - 4 2026-06-13
SWA2015 Southwest Airlines 4 2026-06-11
SWA1911 Southwest Airlines 4 2026-05-18
SWA1552 Southwest Airlines 4 2026-05-14
SWA1540 - 4 2026-07-13
SWA1476 Southwest Airlines 4 2026-05-01
SWA1375 Southwest Airlines 4 2026-04-27
SWA1303 - 4 2026-06-24
SWA1011 - 4 2026-07-08
SWA978 Southwest Airlines 3 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4964 - Jul 14, 23:20 UTCJul 15, 00:15 UTC55m
2026-07-14 SWA650 - Jul 14, 17:45 UTCJul 14, 19:25 UTC1h 40m
2026-07-14 SWA650 BNA → SDF Jul 14, 16:00 UTCJul 14, 16:30 UTC30m
2026-07-14 SWA4638 - Jul 14, 12:50 UTCJul 14, 14:35 UTC1h 45m
2026-07-14 SWA1459 - Jul 14, 01:55 UTCJul 14, 02:50 UTC55m
2026-07-14 SWA1459 MCO → FLL Jul 14, 01:55 UTCJul 14, 02:52 UTC57m
2026-07-13 SWA5049 STL → MCO Jul 13, 22:25 UTCJul 14, 00:20 UTC1h 55m
2026-07-13 SWA5048 - Jul 13, 19:25 UTCJul 13, 21:40 UTC2h 15m
2026-07-13 SWA5048 MCO → STL Jul 13, 19:25 UTCJul 13, 21:33 UTC2h 8m
2026-07-13 SWA1540 - Jul 13, 15:50 UTCJul 13, 18:20 UTC2h 30m
2026-07-13 SWA1540 DAL → MCO Jul 13, 15:48 UTCJul 13, 18:15 UTC2h 27m
2026-07-13 SWA1540 - Jul 13, 13:00 UTCJul 13, 14:05 UTC1h 5m
2026-07-13 SWA1540 - Jul 13, 09:20 UTCJul 13, 12:00 UTC2h 40m
2026-07-13 SWA1459 - Jul 13, 01:05 UTCJul 13, 01:50 UTC45m
2026-07-12 SWA1779 ATL → MCO Jul 12, 22:50 UTCJul 12, 23:50 UTC1h 0m
2026-07-12 SWA1779 SFO → MDW Jul 12, 22:50 UTCJul 12, 23:48 UTC58m
2026-07-12 SWA1779 - Jul 12, 20:15 UTCJul 12, 21:40 UTC1h 25m
2026-07-12 SWA644 AUS → MDW Jul 12, 14:05 UTCJul 12, 18:55 UTC4h 50m
2026-07-12 SWA1791 - Jul 12, 12:05 UTCJul 12, 13:05 UTC1h 0m
2026-07-12 SWA3373 - Jul 12, 02:20 UTCJul 12, 03:20 UTC1h 0m
2026-07-11 SWA1429 - Jul 11, 23:30 UTCJul 12, 01:00 UTC1h 30m
2026-07-11 SWA102 - Jul 11, 21:10 UTCJul 11, 22:50 UTC1h 40m
2026-07-11 SWA2069 - Jul 11, 18:10 UTCJul 11, 19:50 UTC1h 40m
2026-07-11 SWA888 - Jul 11, 16:15 UTCJul 11, 17:15 UTC1h 0m
2026-07-11 SWA888 AUS → DAL Jul 11, 14:25 UTCJul 11, 15:00 UTC35m
2026-07-11 SWA888 IND → AUS Jul 11, 11:15 UTCJul 11, 13:20 UTC2h 5m
2026-07-11 SWA539 - Jul 11, 02:15 UTCJul 11, 03:01 UTC45m
2026-07-10 SWA3140 BUR → BNA Jul 10, 21:30 UTCJul 11, 01:05 UTC3h 35m
2026-07-10 SWA3140 BUR → BNA Jul 10, 21:29 UTCJul 11, 01:01 UTC3h 32m
2026-07-10 SWA579 DEN → BUR Jul 10, 18:10 UTCJul 10, 20:15 UTC2h 5m
2026-07-10 SWA1300 - Jul 10, 15:00 UTCJul 10, 16:35 UTC1h 35m
2026-07-10 SWA1300 DAL → DEN Jul 10, 14:59 UTCJul 10, 16:33 UTC1h 35m
2026-07-10 SWA8 - Jul 10, 13:25 UTCJul 10, 14:10 UTC45m
2026-07-10 SWA2162 - Jul 10, 09:50 UTCJul 10, 11:35 UTC1h 45m
2026-07-10 SWA2162 JAX → HOU Jul 10, 09:47 UTCJul 10, 11:36 UTC1h 49m
2026-07-10 SWA4797 - Jul 10, 02:50 UTCJul 10, 04:30 UTC1h 40m
2026-07-10 SWA3117 - Jul 10, 00:50 UTCJul 10, 02:00 UTC1h 10m
2026-07-10 SWA3117 OKC → HOU Jul 10, 00:50 UTCJul 10, 01:57 UTC1h 7m
2026-07-09 SWA371 AUS → OKC Jul 9, 23:00 UTCJul 10, 00:00 UTC1h 0m
2026-07-09 SWA771 BUR → AUS Jul 9, 19:10 UTCJul 9, 21:45 UTC2h 35m
2026-07-09 SWA771 BUR → AUS Jul 9, 19:06 UTCJul 9, 21:41 UTC2h 36m
2026-07-09 SWA3764 SMF → BUR Jul 9, 16:10 UTCJul 9, 17:05 UTC55m
2026-07-09 SWA2503 LGB → SMF Jul 9, 14:05 UTCJul 9, 15:05 UTC1h 0m
2026-07-09 SWA4907 - Jul 9, 03:50 UTCJul 9, 04:45 UTC55m
2026-07-08 SWA674 - Jul 8, 22:50 UTCJul 9, 03:00 UTC4h 10m
2026-07-08 SWA674 - Jul 8, 20:10 UTCJul 8, 21:25 UTC1h 15m
2026-07-08 SWA1011 - Jul 8, 17:45 UTCJul 8, 18:45 UTC1h 0m
2026-07-08 SWA1011 MKE → MCI Jul 8, 17:41 UTCJul 8, 18:45 UTC1h 4m
2026-07-08 SWA1011 - Jul 8, 15:25 UTCJul 8, 16:50 UTC1h 25m
2026-07-08 SWA1899 - Jul 8, 13:10 UTCJul 8, 14:40 UTC1h 30m

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 N212WN page for operator, model, and routing details .

Mode-S A1C2F1 frequently asked

What is Mode-S code A1C2F1?
A1C2F1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N212WN.
Where is Mode-S A1C2F1 registered?
Mode-S code A1C2F1 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 A1C2F1 broadcasting right now?
Yes. Mode-S A1C2F1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C2F1, octal 50341361, decimal 10,601,201.
What flights does A1C2F1 operate?
Mode-S A1C2F1 has broadcast 20 distinct callsigns, including SWA103, SWA694, SWA4724, SWA3354, SWA923.