Apparatus

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sensors Mode-S transponder

A0645E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N124UP · AIRBUS A-300-600 · operated by UNITED PARCEL SERVICE CO

Hex
A0645E
Octal
50062136
Decimal
10,511,454
Country
US
Tail
N124UP
Type
A306
Broadcasting now · callsign UPS5079 · 29,975 ft
Flights observed
373
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 14:40 UTC

Current position

A0645E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0645E 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
UPS914 United Parcel Service 10 2026-06-10
UPS2627 United Parcel Service 10 2026-06-10
UPS7803 United Parcel Service 8 2026-07-22
UPS1295 - 8 2026-07-09
UPS872 - 7 2026-06-26
UPS7890 - 7 2026-07-08
UPS702 - 7 2026-07-22
UPS5871 United Parcel Service 7 2026-06-26
UPS799 - 6 2026-07-03
UPS5702 United Parcel Service 6 2026-06-25
UPS5555 United Parcel Service 6 2026-04-30
UPS5050 - 6 2026-07-16
UPS1088 United Parcel Service 6 2026-06-18
UPS1057 - 6 2026-07-17
UPS701 - 5 2026-06-26
UPS5274 - 5 2026-07-08
UPS1276 - 5 2026-07-10
UPS855 United Parcel Service 4 2026-05-14
UPS755 United Parcel Service 4 2026-05-21
UPS618 - 4 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UPS492 SDF → FSD Jul 25, 12:20 UTCJul 25, 14:35 UTC2h 15m
2026-07-25 UPS492 SDF → FSD Jul 25, 09:45 UTCJul 25, 11:25 UTC1h 40m
2026-07-25 UPS1381 MEM → SDF Jul 25, 04:05 UTCJul 25, 05:00 UTC55m
2026-07-24 UPS5384 SDF → MEM Jul 24, 21:10 UTCJul 24, 21:55 UTC45m
2026-07-24 UPS5661 - Jul 24, 12:35 UTCJul 24, 13:45 UTC1h 10m
2026-07-24 UPS668 - Jul 24, 09:05 UTCJul 24, 10:10 UTC1h 5m
2026-07-24 UPS1375 TYS → SDF Jul 24, 01:45 UTCJul 24, 02:20 UTC35m
2026-07-23 UPS1376 - Jul 23, 09:10 UTCJul 23, 09:40 UTC30m
2026-07-23 UPS1231 RIC → SDF Jul 23, 01:35 UTCJul 23, 02:50 UTC1h 15m
2026-07-22 UPS5236 SDF → RIC Jul 22, 21:25 UTCJul 22, 22:25 UTC1h 0m
2026-07-22 UPS7803 MSY → RFD Jul 22, 12:50 UTCJul 22, 14:25 UTC1h 35m
2026-07-22 UPS702 - Jul 22, 11:10 UTCJul 22, 11:15 UTC5m
2026-07-21 UPS2949 - Jul 21, 12:00 UTCJul 21, 15:45 UTC3h 45m
2026-07-19 UPS950 - Jul 19, 20:50 UTCJul 20, 00:45 UTC3h 55m
2026-07-19 UPS5189 PHL → SDF Jul 19, 13:35 UTCJul 19, 15:05 UTC1h 30m
2026-07-19 UPS5189 PHL → SDF Jul 19, 13:15 UTCJul 19, 13:20 UTC5m
2026-07-18 UPS5195 DFW → PHL Jul 18, 14:35 UTCJul 18, 17:30 UTC2h 55m
2026-07-17 UPS750 - Jul 17, 06:45 UTCJul 17, 08:20 UTC1h 35m
2026-07-17 UPS1057 - Jul 17, 01:05 UTCJul 17, 03:05 UTC2h 0m
2026-07-16 UPS5050 - Jul 16, 20:55 UTCJul 16, 22:35 UTC1h 40m
2026-07-16 UPS2215 - Jul 16, 11:54 UTCJul 16, 13:00 UTC1h 5m
2026-07-16 UPS1214 - Jul 16, 08:30 UTCJul 16, 09:35 UTC1h 5m
2026-07-16 UPS1305 ATL → SDF Jul 16, 02:15 UTCJul 16, 03:05 UTC50m
2026-07-15 UPS9862 - Jul 15, 11:10 UTCJul 15, 11:45 UTC35m
2026-07-15 UPS1296 - Jul 15, 09:00 UTCJul 15, 09:55 UTC55m
2026-07-15 UPS1081 EWR → SDF Jul 15, 03:20 UTCJul 15, 04:45 UTC1h 25m
2026-07-14 UPS2080 - Jul 14, 20:00 UTCJul 14, 21:50 UTC1h 50m
2026-07-14 UPS2080 SDF → EWR Jul 14, 19:47 UTCJul 14, 21:32 UTC1h 45m
2026-07-14 UPS5321 - Jul 14, 12:55 UTCJul 14, 14:10 UTC1h 15m
2026-07-14 UPS5321 JAX → SDF Jul 14, 12:53 UTCJul 14, 14:08 UTC1h 15m
2026-07-14 UPS9766 - Jul 14, 11:05 UTCJul 14, 11:35 UTC30m
2026-07-14 UPS9766 ABY → JAX Jul 14, 11:03 UTCJul 14, 11:39 UTC36m
2026-07-14 UPS1366 - Jul 14, 08:50 UTCJul 14, 09:55 UTC1h 5m
2026-07-14 UPS1366 SDF → ABY Jul 14, 08:46 UTCJul 14, 09:50 UTC1h 4m
2026-07-14 UPS541 - Jul 14, 02:35 UTCJul 14, 03:35 UTC1h 0m
2026-07-14 UPS541 MKE → SDF Jul 14, 02:27 UTCJul 14, 03:25 UTC58m
2026-07-12 UPS5542 - Jul 12, 21:50 UTCJul 12, 22:45 UTC55m
2026-07-11 UPS1275 - Jul 11, 03:15 UTCJul 11, 04:25 UTC1h 10m
2026-07-10 UPS1276 - Jul 10, 08:40 UTCJul 10, 09:35 UTC55m
2026-07-10 UPS1276 SDF → RDU Jul 10, 08:30 UTCJul 10, 09:34 UTC1h 4m
2026-07-10 UPS1275 - Jul 10, 01:10 UTCJul 10, 02:15 UTC1h 5m
2026-07-09 UPS1276 - Jul 9, 08:30 UTCJul 9, 09:30 UTC1h 0m
2026-07-09 UPS1295 - Jul 9, 02:55 UTCJul 9, 03:40 UTC45m
2026-07-08 UPS7890 - Jul 8, 23:05 UTCJul 8, 23:30 UTC25m
2026-07-08 UPS5274 - Jul 8, 21:00 UTCJul 8, 21:50 UTC50m
2026-07-08 UPS5277 - Jul 8, 12:40 UTCJul 8, 13:25 UTC45m
2026-07-08 UPS5277 GSO → SDF Jul 8, 12:34 UTCJul 8, 13:28 UTC54m
2026-07-08 UPS9862 - Jul 8, 10:50 UTCJul 8, 11:15 UTC25m
2026-07-08 UPS9862 GSP → GSO Jul 8, 10:49 UTCJul 8, 11:16 UTC27m
2026-07-08 UPS1296 - Jul 8, 09:05 UTCJul 8, 09:45 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 N124UP page for operator, model, and routing details .

Mode-S A0645E frequently asked

What is Mode-S code A0645E?
A0645E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N124UP.
Where is Mode-S A0645E registered?
Mode-S code A0645E 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 A0645E broadcasting right now?
Yes. Mode-S A0645E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0645E, octal 50062136, decimal 10,511,454.
What flights does A0645E operate?
Mode-S A0645E has broadcast 20 distinct callsigns, including UPS914, UPS2627, UPS7803, UPS1295, UPS872.