Apparatus

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sensors Mode-S transponder

A0C5EF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N149UP · AIRBUS A-300-600 · operated by UNITED PARCEL SERVICE CO

Hex
A0C5EF
Octal
50142757
Decimal
10,536,431
Country
US
Tail
N149UP
Type
A306
Broadcasting now · callsign UPS1345 · 37,000 ft
Flights observed
385
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 16:45 UTC

Current position

A0C5EF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0C5EF 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
UPS701 United Parcel Service 9 2026-06-12
UPS914 - 7 2026-07-08
UPS5871 United Parcel Service 7 2026-07-25
UPS514 - 7 2026-07-01
UPS592 United Parcel Service 6 2026-06-12
UPS5555 United Parcel Service 6 2026-06-23
UPS5152 - 6 2026-06-21
UPS513 - 6 2026-07-02
UPS1151 - 6 2026-06-23
UPS954 - 5 2026-07-21
UPS636 United Parcel Service 5 2026-05-01
UPS635 United Parcel Service 5 2026-05-05
UPS5870 United Parcel Service 5 2026-06-19
UPS5765 - 5 2026-07-14
UPS5188 - 5 2026-07-12
UPS2580 United Parcel Service 5 2026-05-21
UPS907 - 4 2026-07-08
UPS897 United Parcel Service 4 2026-07-21
UPS612 - 4 2026-06-23
UPS605 United Parcel Service 4 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UPS5871 ABQ → SDF Jul 25, 15:15 UTCJul 25, 16:45 UTC1h 30m
2026-07-25 UPS5871 ABQ → SDF Jul 25, 15:15 UTCJul 25, 16:43 UTC1h 28m
2026-07-25 UPS5871 ABQ → SDF Jul 25, 12:45 UTCJul 25, 13:55 UTC1h 10m
2026-07-25 UPS872 SDF → ABQ Jul 25, 08:45 UTCJul 25, 11:10 UTC2h 25m
2026-07-25 UPS1111 JFK → SDF Jul 25, 03:35 UTCJul 25, 05:10 UTC1h 35m
2026-07-24 UPS1126 RFD → JFK Jul 24, 08:10 UTCJul 24, 09:50 UTC1h 40m
2026-07-24 UPS1327 MCO → PHL Jul 24, 01:30 UTCJul 24, 03:40 UTC2h 10m
2026-07-23 UPS2292 DFW → MCO Jul 23, 23:40 UTCJul 24, 00:05 UTC25m
2026-07-23 UPS2292 DFW → MCO Jul 23, 20:40 UTCJul 23, 22:40 UTC2h 0m
2026-07-23 UPS2307 ATL → DFW Jul 23, 11:45 UTCJul 23, 13:30 UTC1h 45m
2026-07-23 UPS1308 PHL → ATL Jul 23, 07:20 UTCJul 23, 08:50 UTC1h 30m
2026-07-23 UPS1283 CLT → PHL Jul 23, 01:35 UTCJul 23, 02:40 UTC1h 5m
2026-07-22 UPS2274 - Jul 22, 20:45 UTCJul 22, 22:05 UTC1h 20m
2026-07-22 UPS603 ORD → SDF Jul 22, 02:40 UTCJul 22, 03:25 UTC45m
2026-07-21 UPS5606 DFW → ORD Jul 21, 22:15 UTCJul 21, 23:10 UTC55m
2026-07-21 UPS2895 - Jul 21, 13:45 UTCJul 21, 17:10 UTC3h 25m
2026-07-21 UPS954 - Jul 21, 12:05 UTCJul 21, 12:25 UTC20m
2026-07-21 UPS954 - Jul 21, 09:55 UTCJul 21, 10:45 UTC50m
2026-07-21 UPS897 RNO → ONT Jul 21, 03:00 UTCJul 21, 04:00 UTC1h 0m
2026-07-20 UPS5894 BIL → RNO Jul 20, 00:30 UTCJul 20, 02:15 UTC1h 45m
2026-07-19 UPS5894 BIL → RNO Jul 19, 20:25 UTCJul 19, 23:20 UTC2h 55m
2026-07-19 UPS5855 SLC → SDF Jul 19, 13:00 UTCJul 19, 15:55 UTC2h 55m
2026-07-18 UPS5844 - Jul 18, 00:15 UTCJul 18, 03:15 UTC3h 1m
2026-07-17 UPS5955 MHR → SDF Jul 17, 12:40 UTCJul 17, 16:24 UTC3h 45m
2026-07-17 UPS952 RFD → MHR Jul 17, 07:50 UTCJul 17, 11:10 UTC3h 20m
2026-07-17 UPS1125 JFK → RFD Jul 17, 03:20 UTCJul 17, 05:15 UTC1h 55m
2026-07-16 UPS1126 RFD → JFK Jul 16, 08:20 UTCJul 16, 10:00 UTC1h 40m
2026-07-16 UPS555 - Jul 16, 03:00 UTCJul 16, 03:40 UTC40m
2026-07-15 UPS5556 - Jul 15, 21:20 UTCJul 15, 22:05 UTC45m
2026-07-15 UPS2051 - Jul 15, 13:30 UTCJul 15, 14:50 UTC1h 20m
2026-07-15 UPS2051 - Jul 15, 13:05 UTCJul 15, 13:25 UTC20m
2026-07-15 UPS1076 - Jul 15, 08:20 UTCJul 15, 09:55 UTC1h 35m
2026-07-15 UPS1327 - Jul 15, 01:35 UTCJul 15, 03:45 UTC2h 10m
2026-07-14 UPS2292 - Jul 14, 23:20 UTCJul 14, 23:50 UTC30m
2026-07-14 UPS2292 DFW → TPA Jul 14, 19:55 UTCJul 14, 21:55 UTC2h 0m
2026-07-14 UPS5765 - Jul 14, 13:40 UTCJul 14, 14:00 UTC20m
2026-07-14 UPS5765 - Jul 14, 12:45 UTCJul 14, 14:00 UTC1h 15m
2026-07-14 UPS5765 IAH → DFW Jul 14, 12:11 UTCJul 14, 13:21 UTC1h 10m
2026-07-14 UPS778 - Jul 14, 08:40 UTCJul 14, 10:35 UTC1h 55m
2026-07-14 UPS778 RFD → IAH Jul 14, 08:39 UTCJul 14, 10:33 UTC1h 54m
2026-07-14 UPS1191 PHL → RFD Jul 14, 02:25 UTCJul 14, 04:05 UTC1h 40m
2026-07-14 UPS1191 PHL → RFD Jul 14, 02:28 UTCJul 14, 04:02 UTC1h 34m
2026-07-12 UPS5188 - Jul 12, 20:40 UTCJul 12, 22:25 UTC1h 45m
2026-07-12 UPS5213 - Jul 12, 13:55 UTCJul 12, 15:35 UTC1h 40m
2026-07-12 UPS5213 PHL → PHL Jul 12, 13:40 UTCJul 12, 13:45 UTC5m
2026-07-11 UPS5195 DFW → PHL Jul 11, 14:50 UTCJul 11, 17:20 UTC2h 30m
2026-07-10 UPS7836 - Jul 10, 22:15 UTCJul 10, 23:55 UTC1h 40m
2026-07-10 UPS7836 SDF → DFW Jul 10, 22:08 UTCJul 10, 23:52 UTC1h 44m
2026-07-10 UPS5789 DFW → RFD Jul 10, 14:42 UTCJul 10, 16:13 UTC1h 31m
2026-07-10 UPS5789 DFW → RFD Jul 10, 14:40 UTCJul 10, 16:20 UTC1h 40m

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 N149UP page for operator, model, and routing details .

Mode-S A0C5EF frequently asked

What is Mode-S code A0C5EF?
A0C5EF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N149UP.
Where is Mode-S A0C5EF registered?
Mode-S code A0C5EF 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 A0C5EF broadcasting right now?
Yes. Mode-S A0C5EF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0C5EF, octal 50142757, decimal 10,536,431.
What flights does A0C5EF operate?
Mode-S A0C5EF has broadcast 20 distinct callsigns, including UPS701, UPS914, UPS5871, UPS514, UPS592.