Apparatus

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sensors Mode-S transponder

A84343

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N631UP · BOEING 747-8 · operated by UNITED PARCEL SERVICE CO

Hex
A84343
Octal
52041503
Decimal
11,027,267
Country
US
Tail
N631UP
Type
B748
No current signal · last broadcast 2h ago
Flights observed
93
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A84343.

Country allocation

The ICAO 24-bit address A84343 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
UPS4 United Parcel Service 10 2026-04-28
UPS109 United Parcel Service 9 2026-05-16
UPS3 United Parcel Service 8 2026-04-29
UPS108 United Parcel Service 8 2026-05-15
UPS77 United Parcel Service 5 2026-05-03
UPS81 United Parcel Service 4 2026-05-20
UPS64 United Parcel Service 4 2026-05-22
UPS63 United Parcel Service 4 2026-05-23
UPS34 United Parcel Service 4 2026-05-29
UPS223 United Parcel Service 4 2026-04-27
UPS2 - 4 2026-04-30
UPS83 United Parcel Service 3 2026-04-19
UPS224 United Parcel Service 3 2026-04-24
UPS216 United Parcel Service 3 2026-05-14
UPS214 United Parcel Service 3 2026-04-16
UPS59 United Parcel Service 2 2026-04-23
UPS58 United Parcel Service 2 2026-05-20
UPS56 United Parcel Service 2 2026-05-20
UPS32 United Parcel Service 2 2026-05-29
UPS227 United Parcel Service 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UPS33 SYD → HKG May 30, 07:25 UTCMay 30, 09:05 UTC1h 40m
2026-05-29 UPS34 SDF → SYD May 29, 18:55 UTCMay 29, 19:10 UTC15m
2026-05-29 UPS34 SDF → SYD May 29, 18:59 UTCMay 30, 04:38 UTC9h 39m
2026-05-29 UPS32 SDF → HNL May 29, 08:15 UTCMay 29, 16:40 UTC8h 25m
2026-05-28 UPS6097 ANC → SDF May 28, 22:15 UTCMay 29, 04:05 UTC5h 50m
2026-05-23 UPS63 ANC → SDF May 23, 19:05 UTCMay 24, 04:25 UTC9h 20m
2026-05-22 UPS64 SDF → ANC May 22, 19:15 UTCMay 22, 20:55 UTC1h 40m
2026-05-22 UPS64 SDF → ANC May 22, 19:16 UTCMay 23, 05:20 UTC10h 4m
2026-05-22 UPS64 SDF → ANC May 22, 08:20 UTCMay 22, 14:25 UTC6h 5m
2026-05-21 UPS63 ANC → SDF May 21, 23:20 UTCMay 22, 05:05 UTC5h 45m
2026-05-21 UPS63 ANC → SDF May 21, 11:46 UTCMay 21, 21:01 UTC9h 15m
2026-05-21 UPS63 ANC → SDF May 21, 11:55 UTCMay 21, 12:45 UTC50m
2026-05-20 UPS58 HNL → SDF May 20, 22:20 UTCMay 21, 09:00 UTC10h 40m
2026-05-20 UPS58 HNL → SDF May 20, 22:19 UTCMay 21, 09:02 UTC10h 43m
2026-05-20 UPS56 SDF → ANC May 20, 10:15 UTCMay 20, 10:55 UTC40m
2026-05-20 UPS56 SDF → ANC May 20, 10:13 UTCMay 20, 15:32 UTC5h 19m
2026-05-20 UPS81 PVG → SDF May 20, 00:35 UTCMay 20, 04:35 UTC4h 0m
2026-05-20 UPS81 PVG → SDF May 20, 00:23 UTCMay 20, 04:38 UTC4h 15m
2026-05-19 UPS81 PVG → SDF May 19, 14:45 UTCMay 19, 21:55 UTC7h 10m
2026-05-18 UPS81 PVG → SDF May 18, 16:50 UTCMay 19, 16:05 UTC23h 14m
2026-05-18 UPS34 SDF → SYD May 18, 16:10 UTCMay 19, 14:45 UTC22h 34m
2026-05-18 UPS34 SDF → SYD May 18, 09:15 UTCMay 18, 17:55 UTC8h 40m
2026-05-17 UPS32 SDF → HNL May 17, 07:40 UTCMay 17, 16:20 UTC8h 40m
2026-05-16 UPS109 NRT → SDF May 16, 22:40 UTCMay 17, 04:15 UTC5h 35m
2026-05-16 UPS109 NRT → SDF May 16, 13:51 UTCMay 16, 20:00 UTC6h 10m
2026-05-16 UPS109 NRT → SDF May 16, 00:50 UTCMay 16, 11:21 UTC10h 31m
2026-05-15 UPS108 RFD → ANC May 15, 09:30 UTCMay 15, 12:45 UTC3h 15m
2026-05-15 UPS108 RFD → ANC May 15, 09:24 UTCMay 15, 21:54 UTC12h 30m
2026-05-14 UPS216 CGN → SDF May 14, 17:35 UTCMay 14, 19:25 UTC1h 50m
2026-05-14 UPS216 CGN → SDF May 14, 17:30 UTCMay 15, 01:51 UTC8h 21m
2026-05-14 UPS216 CGN → SDF May 14, 17:30 UTCMay 15, 01:47 UTC8h 17m
2026-05-13 UPS227 SDF → CGN May 13, 19:40 UTCMay 13, 22:00 UTC2h 20m
2026-05-13 UPS227 SDF → CGN May 13, 19:37 UTCMay 14, 03:23 UTC7h 46m
2026-05-03 UPS77 ANC → SDF May 3, 06:33 UTCMay 3, 11:51 UTC5h 18m
2026-05-03 UPS77 ANC → SDF May 3, 06:33 UTCMay 3, 11:52 UTC5h 19m
2026-05-03 UPS77 ANC → SDF May 3, 06:40 UTCMay 3, 07:40 UTC1h 0m
2026-05-02 UPS77 ANC → SDF May 2, 18:05 UTCMay 3, 03:25 UTC9h 20m
2026-05-02 UPS77 ANC → SDF May 2, 18:02 UTCMay 3, 03:21 UTC9h 19m
2026-05-01 UPS14 CGN → BKK May 1, 04:05 UTCMay 1, 08:00 UTC3h 55m
2026-04-30 UPS1 - Apr 30, 16:10 UTCApr 30, 20:30 UTC4h 20m
2026-04-30 UPS1 - Apr 30, 08:15 UTCApr 30, 08:30 UTC15m
2026-04-30 UPS2 - Apr 30, 05:25 UTCApr 30, 06:05 UTC40m
2026-04-29 UPS2 - Apr 29, 18:45 UTCApr 29, 22:30 UTC3h 45m
2026-04-29 UPS3 HKG → CGN Apr 29, 11:45 UTCApr 29, 16:15 UTC4h 30m
2026-04-29 UPS3 HKG → CGN Apr 29, 03:55 UTCApr 29, 04:10 UTC15m
2026-04-28 UPS4 STN → TPE Apr 28, 08:45 UTCApr 28, 20:35 UTC11h 50m
2026-04-28 UPS4 STN → TPE Apr 28, 01:45 UTCApr 28, 02:55 UTC1h 10m
2026-04-27 UPS223 SDF → CGN Apr 27, 07:00 UTCApr 27, 15:00 UTC8h 0m
2026-04-24 UPS224 CGN → SDF Apr 24, 17:55 UTCApr 24, 18:45 UTC50m
2026-04-24 UPS224 CGN → SDF Apr 24, 17:47 UTCApr 25, 01:41 UTC7h 54m

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 N631UP page for operator, model, and routing details .

Mode-S A84343 frequently asked

What is Mode-S code A84343?
A84343 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N631UP.
Where is Mode-S A84343 registered?
Mode-S code A84343 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 A84343 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84343, octal 52041503, decimal 11,027,267.
What flights does A84343 operate?
Mode-S A84343 has broadcast 20 distinct callsigns, including UPS4, UPS109, UPS3, UPS108, UPS77.