Apparatus

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sensors Mode-S transponder

A3376C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N306UP · BOEING 767-300 · operated by UNITED PARCEL SERVICE CO

Hex
A3376C
Octal
50633554
Decimal
10,696,556
Country
US
Tail
N306UP
Type
B763
No current signal · last broadcast 4h ago
Flights observed
329
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A3376C.

Country allocation

The ICAO 24-bit address A3376C 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
UPS312 United Parcel Service 8 2026-05-22
UPS2463 United Parcel Service 7 2026-04-21
UPS2462 United Parcel Service 7 2026-04-21
UPS232 United Parcel Service 7 2026-05-08
UPS2190 - 7 2026-06-17
UPS920 - 6 2026-06-30
UPS921 United Parcel Service 5 2026-05-30
UPS915 United Parcel Service 5 2026-06-12
UPS5909 United Parcel Service 5 2026-05-05
UPS237 United Parcel Service 5 2026-04-30
UPS1189 - 5 2026-06-18
UPS961 United Parcel Service 4 2026-05-05
UPS5076 United Parcel Service 4 2026-06-05
UPS5017 - 4 2026-07-03
UPS474 United Parcel Service 4 2026-06-10
UPS313 United Parcel Service 4 2026-05-23
UPS2944 United Parcel Service 4 2026-06-04
UPS2692 - 4 2026-06-18
UPS249 United Parcel Service 4 2026-05-07
UPS248 United Parcel Service 4 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UPS2907 - Jul 14, 11:35 UTCJul 14, 15:30 UTC3h 55m
2026-07-14 UPS2907 ONT → SDF Jul 14, 11:33 UTCJul 14, 15:12 UTC3h 39m
2026-07-10 UPS916 - Jul 10, 07:00 UTCJul 10, 10:50 UTC3h 50m
2026-07-10 UPS916 SDF → ONT Jul 10, 06:51 UTCJul 10, 10:48 UTC3h 57m
2026-07-10 UPS617 - Jul 10, 02:10 UTCJul 10, 03:05 UTC55m
2026-07-09 UPS9725 - Jul 9, 21:30 UTCJul 9, 23:15 UTC1h 45m
2026-07-09 UPS2941 OAK → PSQ Jul 9, 13:45 UTCJul 9, 18:15 UTC4h 30m
2026-07-09 UPS948 - Jul 9, 07:30 UTCJul 9, 11:30 UTC4h 0m
2026-07-09 UPS775 - Jul 9, 03:05 UTCJul 9, 04:55 UTC1h 50m
2026-07-08 UPS5776 - Jul 8, 22:35 UTCJul 8, 23:20 UTC45m
2026-07-08 UPS5776 - Jul 8, 19:00 UTCJul 8, 21:15 UTC2h 15m
2026-07-08 UPS5943 - Jul 8, 10:50 UTCJul 8, 14:35 UTC3h 45m
2026-07-08 UPS5943 OAK → SDF Jul 8, 10:47 UTCJul 8, 14:31 UTC3h 44m
2026-07-07 UPS2946 - Jul 7, 20:05 UTCJul 8, 00:15 UTC4h 10m
2026-07-07 UPS5345 TPA → SDF Jul 7, 11:25 UTCJul 7, 13:00 UTC1h 35m
2026-07-07 UPS1338 - Jul 7, 08:20 UTCJul 7, 09:55 UTC1h 35m
2026-07-07 UPS993 GEG → SDF Jul 7, 02:25 UTCJul 7, 05:55 UTC3h 30m
2026-07-07 UPS993 GEG → SDF Jul 7, 02:29 UTCJul 7, 05:36 UTC3h 7m
2026-07-05 UPS5994 - Jul 5, 21:35 UTCJul 6, 01:15 UTC3h 40m
2026-07-05 UPS401 - Jul 5, 04:00 UTCJul 5, 05:55 UTC1h 55m
2026-07-05 UPS401 MIA → SDF Jul 5, 04:09 UTCJul 5, 06:02 UTC1h 53m
2026-07-04 UPS7983 - Jul 4, 02:20 UTCJul 4, 04:35 UTC2h 15m
2026-07-04 UPS7983 SJU → MIA Jul 4, 02:19 UTCJul 4, 04:33 UTC2h 14m
2026-07-03 UPS7938 - Jul 3, 22:25 UTCJul 3, 22:50 UTC25m
2026-07-03 UPS7938 - Jul 3, 19:10 UTCJul 3, 20:55 UTC1h 45m
2026-07-03 UPS7938 SDF → SJU Jul 3, 19:08 UTCJul 3, 22:44 UTC3h 36m
2026-07-03 UPS5017 BOS → SDF Jul 3, 12:12 UTCJul 3, 14:16 UTC2h 4m
2026-07-03 UPS5017 BOS → SDF Jul 3, 12:20 UTCJul 3, 14:15 UTC1h 55m
2026-07-03 UPS1014 - Jul 3, 08:15 UTCJul 3, 10:00 UTC1h 45m
2026-07-03 UPS1014 SDF → BOS Jul 3, 08:13 UTCJul 3, 10:03 UTC1h 50m
2026-07-03 UPS1331 - Jul 3, 02:50 UTCJul 3, 04:45 UTC1h 55m
2026-07-03 UPS1331 MIA → SDF Jul 3, 02:41 UTCJul 3, 04:48 UTC2h 7m
2026-07-02 UPS371 GUA → MIA Jul 2, 21:55 UTCJul 2, 23:55 UTC2h 0m
2026-07-02 UPS371 - Jul 2, 20:10 UTCJul 2, 20:35 UTC25m
2026-07-02 UPS370 - Jul 2, 13:20 UTCJul 2, 15:05 UTC1h 45m
2026-07-02 UPS370 MIA → MGA Jul 2, 13:18 UTCJul 2, 15:28 UTC2h 10m
2026-07-02 UPS1332 SDF → MIA Jul 2, 08:35 UTCJul 2, 10:30 UTC1h 55m
2026-07-02 UPS1332 SDF → MIA Jul 2, 08:27 UTCJul 2, 10:32 UTC2h 5m
2026-07-02 UPS771 - Jul 2, 03:15 UTCJul 2, 05:05 UTC1h 50m
2026-07-02 UPS771 IAH → SDF Jul 2, 03:11 UTCJul 2, 05:15 UTC2h 4m
2026-07-01 UPS5772 - Jul 1, 22:20 UTCJul 1, 23:00 UTC40m
2026-07-01 UPS5772 - Jul 1, 18:45 UTCJul 1, 20:35 UTC1h 50m
2026-07-01 UPS5905 - Jul 1, 11:05 UTCJul 1, 14:25 UTC3h 20m
2026-07-01 UPS5905 ONT → SDF Jul 1, 11:03 UTCJul 1, 14:34 UTC3h 31m
2026-07-01 UPS763 DFW → ONT Jul 1, 02:30 UTCJul 1, 05:10 UTC2h 40m
2026-07-01 UPS763 DFW → ONT Jul 1, 02:33 UTCJul 1, 04:57 UTC2h 24m
2026-06-30 UPS2919 - Jun 30, 14:15 UTCJun 30, 16:55 UTC2h 40m
2026-06-30 UPS2919 ONT → DFW Jun 30, 14:09 UTCJun 30, 16:48 UTC2h 39m
2026-06-30 UPS920 PHX → ONT Jun 30, 10:20 UTCJun 30, 11:10 UTC50m
2026-06-30 UPS920 PHX → ONT Jun 30, 10:20 UTCJun 30, 11:09 UTC49m

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 N306UP page for operator, model, and routing details .

Mode-S A3376C frequently asked

What is Mode-S code A3376C?
A3376C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N306UP.
Where is Mode-S A3376C registered?
Mode-S code A3376C 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 A3376C broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3376C, octal 50633554, decimal 10,696,556.
What flights does A3376C operate?
Mode-S A3376C has broadcast 20 distinct callsigns, including UPS312, UPS2463, UPS2462, UPS232, UPS2190.