Apparatus

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sensors Mode-S transponder

A0C238

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N148UP · AIRBUS A-300-600 · operated by UNITED PARCEL SERVICE CO

Hex
A0C238
Octal
50141070
Decimal
10,535,480
Country
US
Tail
N148UP
Type
A306
No current signal · last broadcast Jul 24, 12:15 UTC
Flights observed
364
Distinct callsigns
20
Country
US
Last broadcast
Jul 24, 12:15 UTC

Last known position

Most recent position reported by Mode-S A0C238.

Country allocation

The ICAO 24-bit address A0C238 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
UPS5488 - 7 2026-06-30
UPS1481 - 7 2026-07-01
UPS5014 - 6 2026-06-28
UPS2051 - 6 2026-07-07
UPS1478 United Parcel Service 6 2026-06-10
UPS952 - 5 2026-07-08
UPS909 - 5 2026-07-08
UPS605 United Parcel Service 5 2026-05-07
UPS5955 United Parcel Service 5 2026-04-30
UPS5904 - 5 2026-07-07
UPS5495 United Parcel Service 5 2026-06-10
UPS5321 - 5 2026-07-15
UPS5213 United Parcel Service 5 2026-06-18
UPS5195 United Parcel Service 5 2026-07-22
UPS5050 - 5 2026-07-15
UPS5031 - 5 2026-07-14
UPS2846 - 5 2026-06-18
UPS1366 - 5 2026-07-15
UPS994 United Parcel Service 4 2026-05-13
UPS9738 United Parcel Service 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 UPS9863 JFK → SDF Jul 24, 11:30 UTCJul 24, 12:15 UTC45m
2026-07-24 UPS1214 SDF → BWI Jul 24, 08:35 UTCJul 24, 09:45 UTC1h 10m
2026-07-23 UPS5555 MSP → SDF Jul 23, 12:00 UTCJul 23, 13:20 UTC1h 20m
2026-07-23 UPS556 RFD → MSP Jul 23, 08:35 UTCJul 23, 09:25 UTC50m
2026-07-23 UPS1173 MDT → SDF Jul 23, 02:15 UTCJul 23, 03:50 UTC1h 35m
2026-07-22 UPS7888 PHL → MDT Jul 22, 23:35 UTCJul 22, 23:55 UTC20m
2026-07-22 UPS5195 DFW → PHL Jul 22, 15:00 UTCJul 22, 17:45 UTC2h 45m
2026-07-22 UPS555 MSP → RFD Jul 22, 03:20 UTCJul 22, 03:50 UTC30m
2026-07-22 UPS5556 RFD → MSP Jul 22, 00:55 UTCJul 22, 01:50 UTC55m
2026-07-21 UPS5556 RFD → MSP Jul 21, 22:30 UTCJul 21, 23:20 UTC50m
2026-07-21 UPS9507 PAE → ONT Jul 21, 14:15 UTCJul 21, 15:40 UTC1h 25m
2026-07-17 UPS9501 - Jul 17, 14:44 UTCJul 17, 16:04 UTC1h 20m
2026-07-17 UPS5229 - Jul 17, 11:50 UTCJul 17, 12:55 UTC1h 5m
2026-07-17 UPS1214 - Jul 17, 08:30 UTCJul 17, 09:40 UTC1h 10m
2026-07-17 UPS1363 - Jul 17, 02:39 UTCJul 17, 03:50 UTC1h 10m
2026-07-16 UPS7845 - Jul 16, 11:25 UTCJul 16, 12:40 UTC1h 15m
2026-07-16 UPS1346 - Jul 16, 08:05 UTCJul 16, 10:00 UTC1h 55m
2026-07-16 UPS1057 - Jul 16, 01:05 UTCJul 16, 03:05 UTC2h 0m
2026-07-15 UPS5050 - Jul 15, 20:50 UTCJul 15, 22:35 UTC1h 45m
2026-07-15 UPS5321 - Jul 15, 12:25 UTCJul 15, 13:40 UTC1h 15m
2026-07-15 UPS9766 - Jul 15, 10:40 UTCJul 15, 11:05 UTC25m
2026-07-15 UPS1366 SDF → ABY Jul 15, 08:30 UTCJul 15, 09:35 UTC1h 5m
2026-07-15 UPS1057 - Jul 15, 01:00 UTCJul 15, 02:55 UTC1h 55m
2026-07-14 UPS5050 - Jul 14, 20:55 UTCJul 14, 22:40 UTC1h 45m
2026-07-14 UPS5050 SDF → MHT Jul 14, 20:50 UTCJul 14, 22:36 UTC1h 46m
2026-07-14 UPS5031 - Jul 14, 11:50 UTCJul 14, 13:40 UTC1h 50m
2026-07-14 UPS1058 - Jul 14, 08:35 UTCJul 14, 10:20 UTC1h 45m
2026-07-14 UPS1058 SDF → MHT Jul 14, 08:27 UTCJul 14, 10:17 UTC1h 50m
2026-07-14 UPS701 MSY → SDF Jul 14, 01:25 UTCJul 14, 03:05 UTC1h 40m
2026-07-14 UPS701 MSY → SDF Jul 14, 01:24 UTCJul 14, 03:04 UTC1h 40m
2026-07-12 UPS5702 - Jul 12, 21:10 UTCJul 12, 22:35 UTC1h 25m
2026-07-12 UPS5133 - Jul 12, 12:20 UTCJul 12, 13:45 UTC1h 25m
2026-07-11 UPS9706 - Jul 11, 12:05 UTCJul 11, 12:30 UTC25m
2026-07-11 UPS1142 - Jul 11, 10:05 UTCJul 11, 11:05 UTC1h 0m
2026-07-11 UPS1269 - Jul 11, 01:55 UTCJul 11, 02:50 UTC55m
2026-07-10 UPS1270 - Jul 10, 11:30 UTCJul 10, 11:55 UTC25m
2026-07-10 UPS1270 GSO → ROA Jul 10, 11:26 UTCJul 10, 11:46 UTC20m
2026-07-10 UPS1270 - Jul 10, 09:30 UTCJul 10, 10:20 UTC50m
2026-07-10 UPS1207 - Jul 10, 03:15 UTCJul 10, 04:40 UTC1h 25m
2026-07-10 UPS1207 BWI → SDF Jul 10, 02:58 UTCJul 10, 04:36 UTC1h 38m
2026-07-10 UPS5218 - Jul 10, 00:25 UTCJul 10, 01:40 UTC1h 15m
2026-07-09 UPS541 - Jul 9, 02:25 UTCJul 9, 03:20 UTC55m
2026-07-08 UPS5542 - Jul 8, 21:30 UTCJul 8, 22:25 UTC55m
2026-07-08 UPS2955 MHR → SDF Jul 8, 12:50 UTCJul 8, 16:40 UTC3h 50m
2026-07-08 UPS2955 MHR → SDF Jul 8, 12:46 UTCJul 8, 16:28 UTC3h 42m
2026-07-08 UPS952 RFD → MHR Jul 8, 07:40 UTCJul 8, 11:25 UTC3h 45m
2026-07-08 UPS952 RFD → MHR Jul 8, 07:43 UTCJul 8, 11:14 UTC3h 31m
2026-07-08 UPS909 - Jul 8, 02:40 UTCJul 8, 05:55 UTC3h 15m
2026-07-08 UPS909 LGB → RFD Jul 8, 02:37 UTCJul 8, 05:48 UTC3h 11m
2026-07-07 UPS5904 - Jul 7, 19:55 UTCJul 7, 23:30 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 N148UP page for operator, model, and routing details .

Mode-S A0C238 frequently asked

What is Mode-S code A0C238?
A0C238 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N148UP.
Where is Mode-S A0C238 registered?
Mode-S code A0C238 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 A0C238 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 12:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0C238, octal 50141070, decimal 10,535,480.
What flights does A0C238 operate?
Mode-S A0C238 has broadcast 20 distinct callsigns, including UPS5488, UPS1481, UPS5014, UPS2051, UPS1478.