Apparatus

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sensors Mode-S transponder

A2101F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N232BZ · AIRBUS A220-300 · operated by BANK OF UTAH TRUSTEE

Hex
A2101F
Octal
50410037
Decimal
10,620,959
Country
US
Tail
N232BZ
Type
BCS3
No current signal · last broadcast 8h ago
Flights observed
64
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A2101F.

Country allocation

The ICAO 24-bit address A2101F 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
MXY399 Breeze Airways 8 2026-05-25
MXY398 Breeze Airways 8 2026-05-24
MXY1069 Breeze Airways 6 2026-05-29
MXY1068 Breeze Airways 6 2026-05-29
MXY541 Breeze Airways 4 2026-05-27
MXY540 Breeze Airways 4 2026-05-28
MXY377 Breeze Airways 4 2026-05-30
MXY376 Breeze Airways 4 2026-05-29
MXY381 Breeze Airways 2 2026-05-23
MXY380 Breeze Airways 2 2026-05-27
MXY375 Breeze Airways 2 2026-05-29
MXY374 Breeze Airways 2 2026-05-28
MXY1703 Breeze Airways 2 2026-05-26
MXY1702 Breeze Airways 2 2026-05-25
MXY9531 Breeze Airways 1 2026-05-14
MXY9530 Breeze Airways 1 2026-05-13
MXY9529 - 1 2026-04-12
MXY9032 Breeze Airways 1 2026-05-15
MXY1961 Breeze Airways 1 2026-05-26
MXY1960 Breeze Airways 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 MXY377 ROC → RDU May 30, 00:35 UTCMay 30, 02:00 UTC1h 25m
2026-05-29 MXY376 RDU → ROC May 29, 22:10 UTCMay 29, 23:35 UTC1h 25m
2026-05-29 MXY1069 SAT → MEM May 29, 19:15 UTCMay 29, 20:50 UTC1h 35m
2026-05-29 MXY1069 SAT → MEM May 29, 16:40 UTCMay 29, 18:10 UTC1h 30m
2026-05-29 MXY1068 RDU → MEM May 29, 13:50 UTCMay 29, 15:15 UTC1h 25m
2026-05-29 MXY1068 RDU → MEM May 29, 11:10 UTCMay 29, 12:40 UTC1h 30m
2026-05-29 MXY375 VRB → HVN May 29, 01:05 UTCMay 29, 01:55 UTC50m
2026-05-28 MXY375 VRB → HVN May 28, 23:10 UTCMay 29, 00:05 UTC55m
2026-05-28 MXY374 HVN → VRB May 28, 20:50 UTCMay 28, 21:50 UTC1h 0m
2026-05-28 MXY374 HVN → VRB May 28, 19:00 UTCMay 28, 20:00 UTC1h 0m
2026-05-28 MXY1071 SAT → RDU May 28, 15:10 UTCMay 28, 18:00 UTC2h 50m
2026-05-28 MXY1836 RDU → SAT May 28, 11:15 UTCMay 28, 14:00 UTC2h 45m
2026-05-28 MXY540 BDL → RDU May 28, 00:30 UTCMay 28, 01:55 UTC1h 25m
2026-05-27 MXY541 RDU → BDL May 27, 22:10 UTCMay 27, 23:30 UTC1h 20m
2026-05-27 MXY380 RDU → PUJ May 27, 12:10 UTCMay 27, 19:40 UTC7h 30m
2026-05-26 MXY1961 CMH → RDU May 26, 19:34 UTCMay 26, 20:40 UTC1h 5m
2026-05-26 MXY1960 RDU → CMH May 26, 16:35 UTCMay 26, 17:35 UTC1h 0m
2026-05-26 MXY1703 LAX → MSN May 26, 00:35 UTCMay 26, 02:15 UTC1h 40m
2026-05-25 MXY1703 LAX → MSN May 25, 20:15 UTCMay 25, 23:45 UTC3h 30m
2026-05-25 MXY1702 RDU → MSN May 25, 15:15 UTCMay 25, 18:55 UTC3h 40m
2026-05-25 MXY1702 RDU → MSN May 25, 11:10 UTCMay 25, 13:05 UTC1h 55m
2026-05-25 MXY399 SAV → MSY May 25, 01:55 UTCMay 25, 02:20 UTC25m
2026-05-24 MXY399 SAV → MSY May 24, 19:40 UTCMay 24, 23:46 UTC4h 6m
2026-05-24 MXY398 SAV → HPN May 24, 13:35 UTCMay 24, 18:10 UTC4h 35m
2026-05-24 MXY398 SAV → HPN May 24, 11:10 UTCMay 24, 12:20 UTC1h 10m
2026-05-24 MXY540 BDL → RDU May 24, 00:25 UTCMay 24, 01:50 UTC1h 25m
2026-05-23 MXY541 RDU → BDL May 23, 22:05 UTCMay 23, 23:25 UTC1h 20m
2026-05-23 MXY381 PUJ → RDU May 23, 11:20 UTCMay 23, 19:05 UTC7h 45m
2026-05-23 MXY377 ROC → RDU May 23, 00:15 UTCMay 23, 01:50 UTC1h 35m
2026-05-22 MXY376 RDU → ROC May 22, 21:55 UTCMay 22, 23:10 UTC1h 15m
2026-05-22 MXY1069 SAT → MEM May 22, 19:10 UTCMay 22, 20:45 UTC1h 35m
2026-05-22 MXY1069 SAT → MEM May 22, 16:40 UTCMay 22, 18:05 UTC1h 25m
2026-05-22 MXY1068 RDU → MEM May 22, 13:55 UTCMay 22, 15:20 UTC1h 25m
2026-05-22 MXY1068 RDU → MEM May 22, 11:10 UTCMay 22, 12:40 UTC1h 30m
2026-05-22 MXY399 SAV → MSY May 22, 02:00 UTCMay 22, 03:00 UTC1h 0m
2026-05-21 MXY399 SAV → MSY May 21, 20:15 UTCMay 22, 00:45 UTC4h 30m
2026-05-21 MXY398 SAV → HPN May 21, 13:50 UTCMay 21, 18:35 UTC4h 45m
2026-05-21 MXY398 SAV → HPN May 21, 11:15 UTCMay 21, 12:15 UTC1h 0m
2026-05-21 MXY540 BDL → RDU May 21, 02:45 UTCMay 21, 04:10 UTC1h 25m
2026-05-20 MXY541 RDU → BDL May 20, 23:35 UTCMay 21, 01:15 UTC1h 40m
2026-05-20 MXY381 PUJ → RDU May 20, 11:25 UTCMay 20, 19:25 UTC8h 0m
2026-05-20 MXY399 SAV → MSY May 20, 01:20 UTCMay 20, 02:25 UTC1h 5m
2026-05-19 MXY399 SAV → MSY May 19, 20:00 UTCMay 20, 00:20 UTC4h 20m
2026-05-19 MXY398 SAV → HPN May 19, 13:35 UTCMay 19, 18:15 UTC4h 40m
2026-05-19 MXY398 SAV → HPN May 19, 11:15 UTCMay 19, 12:20 UTC1h 5m
2026-05-19 MXY377 ROC → RDU May 19, 00:50 UTCMay 19, 02:20 UTC1h 30m
2026-05-18 MXY376 RDU → ROC May 18, 22:30 UTCMay 18, 23:55 UTC1h 25m
2026-05-18 MXY1069 SAT → MEM May 18, 19:10 UTCMay 18, 20:40 UTC1h 30m
2026-05-18 MXY1069 SAT → MEM May 18, 16:40 UTCMay 18, 18:05 UTC1h 25m
2026-05-18 MXY1068 RDU → MEM May 18, 13:50 UTCMay 18, 15:25 UTC1h 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 N232BZ page for operator, model, and routing details .

Mode-S A2101F frequently asked

What is Mode-S code A2101F?
A2101F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N232BZ.
Where is Mode-S A2101F registered?
Mode-S code A2101F 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 A2101F broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2101F, octal 50410037, decimal 10,620,959.
What flights does A2101F operate?
Mode-S A2101F has broadcast 20 distinct callsigns, including MXY399, MXY398, MXY1069, MXY1068, MXY541.