Apparatus

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sensors Mode-S transponder

A11EB4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N171UP · AIRBUS A-300-600 · operated by UNITED PARCEL SERVICE CO

Hex
A11EB4
Octal
50217264
Decimal
10,559,156
Country
US
Tail
N171UP
Type
A306
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
383
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A11EB4.

Country allocation

The ICAO 24-bit address A11EB4 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
UPS7930 United Parcel Service 15 2026-07-25
UPS7929 United Parcel Service 15 2026-07-25
UPS712 - 12 2026-07-14
UPS5218 - 9 2026-06-17
UPS1270 - 9 2026-06-23
UPS1207 - 9 2026-06-18
UPS591 United Parcel Service 7 2026-05-27
UPS914 - 6 2026-06-24
UPS755 - 6 2026-07-21
UPS711 - 6 2026-07-01
UPS5625 United Parcel Service 6 2026-06-13
UPS556 United Parcel Service 6 2026-07-21
UPS1214 United Parcel Service 6 2026-06-10
UPS602 United Parcel Service 5 2026-06-09
UPS5662 - 5 2026-07-16
UPS5605 United Parcel Service 5 2026-06-09
UPS5555 - 5 2026-07-21
UPS514 - 5 2026-07-08
UPS2627 United Parcel Service 5 2026-06-24
UPS1295 United Parcel Service 5 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UPS950 SDF → OAK Jul 26, 21:40 UTCJul 26, 23:00 UTC1h 20m
2026-07-26 UPS5277 GSO → SDF Jul 26, 13:20 UTCJul 26, 14:15 UTC55m
2026-07-25 UPS5278 SDF → RIC Jul 25, 23:15 UTCJul 25, 23:50 UTC35m
2026-07-25 UPS5278 SDF → RIC Jul 25, 23:09 UTCJul 25, 23:48 UTC39m
2026-07-25 UPS5278 SDF → RIC Jul 25, 21:00 UTCJul 25, 22:05 UTC1h 5m
2026-07-25 UPS7929 SJU → SDF Jul 25, 13:25 UTCJul 25, 15:35 UTC2h 10m
2026-07-25 UPS7929 SJU → SDF Jul 25, 11:45 UTCJul 25, 11:55 UTC10m
2026-07-25 UPS7929 SJU → SDF Jul 25, 11:40 UTCJul 25, 15:26 UTC3h 46m
2026-07-25 UPS7930 SDF → SJU Jul 25, 09:25 UTCJul 25, 09:50 UTC25m
2026-07-25 UPS7930 SDF → SJU Jul 25, 06:05 UTCJul 25, 07:50 UTC1h 45m
2026-07-25 UPS1285 CLT → SDF Jul 25, 03:10 UTCJul 25, 04:05 UTC55m
2026-07-24 UPS9732 PBI → DFW Jul 24, 23:55 UTCJul 25, 00:45 UTC50m
2026-07-24 UPS5236 SDF → RIC Jul 24, 21:30 UTCJul 24, 22:30 UTC1h 0m
2026-07-24 UPS5481 DTW → SDF Jul 24, 11:55 UTCJul 24, 12:45 UTC50m
2026-07-24 UPS1488 RFD → DTW Jul 24, 08:30 UTCJul 24, 09:15 UTC45m
2026-07-24 UPS1487 DTW → SDF Jul 24, 02:15 UTCJul 24, 03:00 UTC45m
2026-07-23 UPS1482 SDF → DTW Jul 23, 09:10 UTCJul 23, 10:00 UTC50m
2026-07-23 UPS1363 PNS → SDF Jul 23, 02:40 UTCJul 23, 04:00 UTC1h 20m
2026-07-22 UPS7845 FLL → SDF Jul 22, 10:20 UTCJul 22, 12:45 UTC2h 25m
2026-07-22 UPS789 SAT → SDF Jul 22, 03:05 UTCJul 22, 05:05 UTC2h 0m
2026-07-21 UPS5790 SDF → SAT Jul 21, 22:25 UTCJul 22, 00:20 UTC1h 55m
2026-07-21 UPS5555 - Jul 21, 14:10 UTCJul 21, 14:55 UTC45m
2026-07-21 UPS5555 - Jul 21, 12:10 UTCJul 21, 12:45 UTC35m
2026-07-21 UPS556 RFD → MSP Jul 21, 08:30 UTCJul 21, 09:20 UTC50m
2026-07-21 UPS755 - Jul 21, 03:20 UTCJul 21, 05:10 UTC1h 50m
2026-07-20 UPS2782 SDF → SAT Jul 20, 23:00 UTCJul 20, 23:50 UTC50m
2026-07-20 UPS2782 SDF → SAT Jul 20, 22:56 UTCJul 20, 23:41 UTC45m
2026-07-20 UPS2782 SDF → SAT Jul 20, 19:40 UTCJul 20, 21:45 UTC2h 5m
2026-07-17 UPS9824 SDF → MEM Jul 17, 10:25 UTCJul 17, 11:04 UTC40m
2026-07-17 UPS1478 - Jul 17, 08:25 UTCJul 17, 09:04 UTC40m
2026-07-17 UPS661 - Jul 17, 02:45 UTCJul 17, 03:59 UTC1h 15m
2026-07-16 UPS5662 - Jul 16, 21:40 UTCJul 16, 22:59 UTC1h 20m
2026-07-16 UPS9308 DTW → SDF Jul 16, 11:54 UTCJul 16, 12:44 UTC50m
2026-07-16 UPS1482 - Jul 16, 09:00 UTCJul 16, 09:45 UTC45m
2026-07-16 UPS9300 - Jul 16, 02:15 UTCJul 16, 03:35 UTC1h 20m
2026-07-14 UPS712 - Jul 14, 11:10 UTCJul 14, 11:35 UTC25m
2026-07-14 UPS712 LIT → SHV Jul 14, 11:04 UTCJul 14, 11:35 UTC31m
2026-07-14 UPS712 - Jul 14, 08:50 UTCJul 14, 09:40 UTC50m
2026-07-14 UPS789 SAT → SDF Jul 14, 03:00 UTCJul 14, 05:00 UTC2h 0m
2026-07-14 UPS789 SAT → SDF Jul 14, 02:52 UTCJul 14, 04:59 UTC2h 7m
2026-07-12 UPS5790 - Jul 12, 20:35 UTCJul 12, 22:45 UTC2h 10m
2026-07-12 UPS5481 - Jul 12, 12:10 UTCJul 12, 12:55 UTC45m
2026-07-12 UPS9600 - Jul 12, 09:10 UTCJul 12, 10:01 UTC50m
2026-07-09 UPS5555 - Jul 9, 14:40 UTCJul 9, 15:35 UTC55m
2026-07-09 UPS5555 RFD → SDF Jul 9, 14:41 UTCJul 9, 15:31 UTC50m
2026-07-09 UPS5555 - Jul 9, 12:45 UTCJul 9, 13:25 UTC40m
2026-07-09 UPS556 - Jul 9, 08:20 UTCJul 9, 09:00 UTC40m
2026-07-09 UPS556 RFD → MSP Jul 9, 08:19 UTCJul 9, 09:09 UTC50m
2026-07-09 UPS612 - Jul 9, 05:55 UTCJul 9, 06:40 UTC45m
2026-07-09 UPS612 SDF → RFD Jul 9, 05:52 UTCJul 9, 06:49 UTC57m

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 N171UP page for operator, model, and routing details .

Mode-S A11EB4 frequently asked

What is Mode-S code A11EB4?
A11EB4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N171UP.
Where is Mode-S A11EB4 registered?
Mode-S code A11EB4 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 A11EB4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A11EB4, octal 50217264, decimal 10,559,156.
What flights does A11EB4 operate?
Mode-S A11EB4 has broadcast 20 distinct callsigns, including UPS7930, UPS7929, UPS712, UPS5218, UPS1270.