Apparatus

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sensors Mode-S transponder

A57F11

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N453UP · BOEING 757-200 · operated by UNITED PARCEL SERVICE CO

Hex
A57F11
Octal
51277421
Decimal
10,845,969
Country
US
Tail
N453UP
Type
B752
Broadcasting now · callsign UPS1299 · 34,000 ft
Flights observed
198
Distinct callsigns
20
Country
US
Last broadcast
Jul 24, 23:05 UTC

Current position

A57F11 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A57F11 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
UPS1160 - 8 2026-06-19
UPS1316 United Parcel Service 7 2026-06-09
UPS5833 United Parcel Service 6 2026-06-17
UPS1244 United Parcel Service 6 2026-05-27
UPS9748 United Parcel Service 5 2026-05-19
UPS1468 United Parcel Service 5 2026-06-12
UPS1392 United Parcel Service 5 2026-05-28
UPS1365 United Parcel Service 5 2026-05-28
UPS834 - 4 2026-06-17
UPS805 United Parcel Service 4 2026-04-17
UPS672 United Parcel Service 4 2026-05-21
UPS5806 United Parcel Service 4 2026-04-16
UPS9861 United Parcel Service 3 2026-05-06
UPS9844 United Parcel Service 3 2026-05-28
UPS9503 - 3 2026-07-19
UPS887 United Parcel Service 3 2026-04-16
UPS796 United Parcel Service 3 2026-05-20
UPS795 United Parcel Service 3 2026-05-21
UPS620 United Parcel Service 3 2026-06-10
UPS2986 United Parcel Service 3 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 UPS371 GUA → MIA Jul 24, 20:40 UTCJul 24, 23:05 UTC2h 25m
2026-07-24 UPS371 GUA → MIA Jul 24, 19:00 UTCJul 24, 19:30 UTC30m
2026-07-24 UPS370 - Jul 24, 13:10 UTCJul 24, 14:15 UTC1h 5m
2026-07-24 UPS1342 PHL → JAX Jul 24, 07:25 UTCJul 24, 09:35 UTC2h 10m
2026-07-24 UPS1445 CLE → SDF Jul 24, 01:45 UTCJul 24, 02:35 UTC50m
2026-07-23 UPS1446 PHL → CLE Jul 23, 08:25 UTCJul 23, 09:15 UTC50m
2026-07-23 UPS783 SAT → RFD Jul 23, 02:30 UTCJul 23, 04:40 UTC2h 10m
2026-07-22 UPS2784 - Jul 22, 18:50 UTCJul 22, 21:15 UTC2h 25m
2026-07-22 UPS7891 - Jul 22, 11:55 UTCJul 22, 14:55 UTC3h 0m
2026-07-22 UPS582 - Jul 22, 10:20 UTCJul 22, 11:20 UTC1h 0m
2026-07-22 UPS1269 GSO → SDF Jul 22, 01:45 UTCJul 22, 02:40 UTC55m
2026-07-21 UPS1268 - Jul 21, 09:25 UTCJul 21, 10:05 UTC40m
2026-07-21 UPS943 SJC → RFD Jul 21, 02:10 UTCJul 21, 06:05 UTC3h 55m
2026-07-20 UPS9820 MHR → LAX Jul 20, 23:35 UTCJul 21, 00:00 UTC25m
2026-07-19 UPS5942 SDF → OAK Jul 19, 20:20 UTCJul 20, 00:15 UTC3h 55m
2026-07-19 UPS9503 - Jul 19, 14:10 UTCJul 19, 15:35 UTC1h 25m
2026-06-21 UPS9503 CAE → CVG Jun 21, 11:49 UTCJun 21, 12:14 UTC25m
2026-06-21 UPS9503 CAE → CVG Jun 21, 11:43 UTCJun 21, 13:23 UTC1h 40m
2026-06-19 UPS1160 - Jun 19, 07:45 UTCJun 19, 08:29 UTC45m
2026-06-19 UPS1160 - Jun 19, 06:10 UTCJun 19, 06:59 UTC50m
2026-06-18 UPS5837 BOI → SDF Jun 18, 13:05 UTCJun 18, 16:05 UTC3h 0m
2026-06-18 UPS5837 BOI → SDF Jun 18, 13:01 UTCJun 18, 16:05 UTC3h 4m
2026-06-18 UPS838 SDF → BOI Jun 18, 07:50 UTCJun 18, 11:25 UTC3h 35m
2026-06-18 UPS838 SDF → BOI Jun 18, 07:50 UTCJun 18, 11:34 UTC3h 44m
2026-06-18 UPS9743 - Jun 18, 01:35 UTCJun 18, 04:00 UTC2h 25m
2026-06-18 UPS9743 MIA → SDF Jun 18, 01:29 UTCJun 18, 03:38 UTC2h 9m
2026-06-17 UPS5334 ONT → TPA Jun 17, 21:16 UTCJun 17, 23:33 UTC2h 17m
2026-06-17 UPS5334 ONT → TPA Jun 17, 21:15 UTCJun 17, 23:35 UTC2h 20m
2026-06-17 UPS5833 MHR → DFW Jun 17, 13:50 UTCJun 17, 16:50 UTC3h 0m
2026-06-17 UPS5833 MHR → DFW Jun 17, 13:51 UTCJun 17, 16:44 UTC2h 53m
2026-06-17 UPS5833 MHR → DFW Jun 17, 11:50 UTCJun 17, 12:50 UTC1h 0m
2026-06-17 UPS834 - Jun 17, 09:25 UTCJun 17, 10:50 UTC1h 25m
2026-06-17 UPS834 ONT → BOI Jun 17, 09:22 UTCJun 17, 10:53 UTC1h 31m
2026-06-17 UPS785 - Jun 17, 02:30 UTCJun 17, 03:55 UTC1h 25m
2026-06-17 UPS785 ELP → ONT Jun 17, 02:29 UTCJun 17, 03:54 UTC1h 25m
2026-06-16 UPS2796 - Jun 16, 21:25 UTCJun 17, 00:05 UTC2h 40m
2026-06-16 UPS2796 SDF → ELP Jun 16, 21:19 UTCJun 17, 00:07 UTC2h 48m
2026-06-16 UPS2989 - Jun 16, 13:15 UTCJun 16, 16:50 UTC3h 35m
2026-06-16 UPS990 DEN → BFI Jun 16, 09:25 UTCJun 16, 11:55 UTC2h 30m
2026-06-16 UPS990 - Jun 16, 05:30 UTCJun 16, 08:05 UTC2h 35m
2026-06-16 UPS1467 - Jun 16, 02:54 UTCJun 16, 03:39 UTC45m
2026-06-12 UPS1468 SDF → FWA Jun 12, 10:35 UTCJun 12, 10:50 UTC15m
2026-06-12 UPS1468 SDF → FWA Jun 12, 10:36 UTCJun 12, 10:51 UTC15m
2026-06-12 UPS1468 SDF → FWA Jun 12, 09:25 UTCJun 12, 09:45 UTC20m
2026-06-12 UPS1467 SBN → SDF Jun 12, 04:00 UTCJun 12, 06:10 UTC2h 10m
2026-06-12 UPS1467 SBN → SDF Jun 12, 04:00 UTCJun 12, 05:55 UTC1h 55m
2026-06-11 UPS1468 SDF → FWA Jun 11, 11:15 UTCJun 11, 11:25 UTC10m
2026-06-11 UPS1468 SDF → FWA Jun 11, 09:40 UTCJun 11, 10:10 UTC30m
2026-06-11 UPS619 PIA → SDF Jun 11, 04:50 UTCJun 11, 06:20 UTC1h 30m
2026-06-10 UPS620 SDF → PIA Jun 10, 09:00 UTCJun 10, 09:45 UTC45m

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 N453UP page for operator, model, and routing details .

Mode-S A57F11 frequently asked

What is Mode-S code A57F11?
A57F11 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N453UP.
Where is Mode-S A57F11 registered?
Mode-S code A57F11 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 A57F11 broadcasting right now?
Yes. Mode-S A57F11 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A57F11, octal 51277421, decimal 10,845,969.
What flights does A57F11 operate?
Mode-S A57F11 has broadcast 20 distinct callsigns, including UPS1160, UPS1316, UPS5833, UPS1244, UPS9748.