Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABC573

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N858DZ · BOEING 737-900 · operated by BANK OF UTAH TRUSTEE

Hex
ABC573
Octal
52742563
Decimal
11,257,203
Country
US
Tail
N858DZ
Type
B739
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
514
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S ABC573.

Country allocation

The ICAO 24-bit address ABC573 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
DAL809 Delta Air Lines 7 2026-04-15
DAL2129 Delta Air Lines 6 2026-07-20
DAL1424 - 6 2026-07-13
DAL801 Delta Air Lines 5 2026-05-29
DAL2504 Delta Air Lines 5 2026-06-10
DAL2233 Delta Air Lines 5 2026-05-24
DAL1801 - 5 2026-07-04
DAL874 Delta Air Lines 4 2026-06-11
DAL600 Delta Air Lines 4 2026-05-28
DAL539 Delta Air Lines 4 2026-07-01
DAL3115 - 4 2026-07-06
DAL2986 - 4 2026-07-09
DAL2925 Delta Air Lines 4 2026-06-08
DAL2894 - 4 2026-07-12
DAL2208 - 4 2026-06-19
DAL2136 Delta Air Lines 4 2026-06-03
DAL1913 Delta Air Lines 4 2026-07-22
DAL1870 Delta Air Lines 4 2026-05-28
DAL1782 - 4 2026-06-24
DAL1757 - 4 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL533 ATL → PHX Jul 26, 21:55 UTCJul 26, 22:45 UTC50m
2026-07-26 DAL1656 EYW → ATL Jul 26, 16:35 UTCJul 26, 19:40 UTC3h 5m
2026-07-26 DAL1656 EYW → ATL Jul 26, 16:31 UTCJul 26, 19:34 UTC3h 3m
2026-07-26 DAL931 CVG → LAX Jul 26, 01:05 UTCJul 26, 04:05 UTC3h 0m
2026-07-25 DAL2905 SJC → SLC Jul 25, 20:50 UTCJul 25, 22:45 UTC1h 55m
2026-07-25 DAL2905 SJC → SLC Jul 25, 20:45 UTCJul 25, 22:44 UTC1h 59m
2026-07-25 DAL2905 SJC → SLC Jul 25, 17:05 UTCJul 25, 19:15 UTC2h 10m
2026-07-25 DAL1418 ATL → MSY Jul 25, 12:10 UTCJul 25, 15:35 UTC3h 25m
2026-07-25 DAL2180 JFK → TPA Jul 25, 02:00 UTCJul 25, 05:00 UTC3h 0m
2026-07-24 DAL2114 MSY → ATL Jul 24, 20:55 UTCJul 25, 00:10 UTC3h 15m
2026-07-24 DAL630 ANC → MSP Jul 24, 16:55 UTCJul 24, 19:30 UTC2h 35m
2026-07-24 DAL2261 ATL → BDL Jul 24, 12:23 UTCJul 24, 15:12 UTC2h 49m
2026-07-24 DAL2261 ATL → BDL Jul 24, 12:25 UTCJul 24, 15:15 UTC2h 50m
2026-07-24 DAL1173 PBI → ATL Jul 24, 03:10 UTCJul 24, 05:10 UTC2h 0m
2026-07-24 DAL2311 MIA → BOS Jul 24, 00:15 UTCJul 24, 01:35 UTC1h 20m
2026-07-23 DAL908 DTW → LAX Jul 23, 18:25 UTCJul 23, 22:30 UTC4h 5m
2026-07-23 DAL772 - Jul 23, 13:00 UTCJul 23, 16:50 UTC3h 50m
2026-07-23 DAL1327 MIA → ATL Jul 23, 00:55 UTCJul 23, 05:25 UTC4h 30m
2026-07-23 DAL1327 MIA → ATL Jul 23, 00:53 UTCJul 23, 05:27 UTC4h 34m
2026-07-22 DAL1913 DTW → SJU Jul 22, 20:55 UTCJul 22, 22:40 UTC1h 45m
2026-07-22 DAL1913 DTW → SJU Jul 22, 18:30 UTCJul 22, 18:40 UTC10m
2026-07-22 DAL1913 DTW → SJU Jul 22, 18:25 UTCJul 22, 22:24 UTC3h 59m
2026-07-22 DAL1913 DTW → SJU Jul 22, 13:00 UTCJul 22, 17:00 UTC4h 0m
2026-07-22 DAL881 LAX → CVG Jul 22, 00:15 UTCJul 22, 03:35 UTC3h 20m
2026-07-21 DAL941 SEA → MSP Jul 21, 19:50 UTCJul 21, 22:30 UTC2h 40m
2026-07-21 DAL868 LAS → DTW Jul 21, 14:30 UTCJul 21, 17:55 UTC3h 25m
2026-07-21 DAL2872 JFK → MCO Jul 21, 10:35 UTCJul 21, 12:55 UTC2h 20m
2026-07-21 DAL2872 JFK → MCO Jul 21, 10:30 UTCJul 21, 12:45 UTC2h 15m
2026-07-21 DAL2918 ORD → BOS Jul 21, 01:00 UTCJul 21, 02:50 UTC1h 50m
2026-07-20 DAL2129 LGA → ORD Jul 20, 19:15 UTCJul 20, 22:40 UTC3h 25m
2026-07-20 DAL2129 LGA → ORD Jul 20, 14:15 UTCJul 20, 17:20 UTC3h 5m
2026-07-20 DAL2791 PHL → MSP Jul 20, 09:55 UTCJul 20, 12:45 UTC2h 50m
2026-07-20 DAL2791 PHL → MSP Jul 20, 09:55 UTCJul 20, 12:40 UTC2h 45m
2026-07-20 DAL2703 MSY → LGA Jul 20, 01:40 UTCJul 20, 03:35 UTC1h 55m
2026-07-19 DAL2437 GEG → MSP Jul 19, 21:40 UTCJul 19, 23:50 UTC2h 10m
2026-07-19 DAL2437 GEG → MSP Jul 19, 21:40 UTCJul 19, 23:49 UTC2h 9m
2026-07-19 DAL2437 MSP → GEG Jul 19, 17:35 UTCJul 19, 20:25 UTC2h 50m
2026-07-19 DAL2369 ATL → BNA Jul 19, 13:25 UTCJul 19, 16:00 UTC2h 35m
2026-07-18 DAL2008 MSP → LAX Jul 18, 21:20 UTCJul 19, 00:35 UTC3h 15m
2026-07-18 DAL2916 - Jul 18, 14:55 UTCJul 18, 17:00 UTC2h 5m
2026-07-18 DAL2046 SLC → SLC Jul 18, 05:15 UTCJul 18, 13:00 UTC7h 45m
2026-07-18 DAL1451 - Jul 18, 03:00 UTCJul 18, 04:10 UTC1h 10m
2026-07-18 DAL1451 SLC → PHX Jul 18, 00:45 UTCJul 18, 02:00 UTC1h 15m
2026-07-17 DAL849 - Jul 17, 21:50 UTCJul 17, 23:14 UTC1h 25m
2026-07-17 DAL849 SFO → SLC Jul 17, 21:47 UTCJul 17, 23:06 UTC1h 19m
2026-07-17 DAL902 SLC → SFO Jul 17, 18:19 UTCJul 17, 19:55 UTC1h 35m
2026-07-17 DAL1176 BWI → SLC Jul 17, 11:25 UTCJul 17, 15:20 UTC3h 55m
2026-07-17 DAL2079 SLC → BWI Jul 17, 05:39 UTCJul 17, 09:40 UTC4h 0m
2026-07-17 DAL1244 - Jul 17, 00:30 UTCJul 17, 01:59 UTC1h 30m
2026-07-16 DAL1244 SLC → PDX Jul 16, 21:30 UTCJul 16, 22:55 UTC1h 25m

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 N858DZ page for operator, model, and routing details .

Mode-S ABC573 frequently asked

What is Mode-S code ABC573?
ABC573 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N858DZ.
Where is Mode-S ABC573 registered?
Mode-S code ABC573 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 ABC573 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC573, octal 52742563, decimal 11,257,203.
What flights does ABC573 operate?
Mode-S ABC573 has broadcast 20 distinct callsigns, including DAL809, DAL2129, DAL1424, DAL801, DAL2504.