Apparatus

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sensors Mode-S transponder

AB34EA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N821DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AB34EA
Octal
52632352
Decimal
11,220,202
Country
US
Tail
N821DN
Type
B739
No current signal · last broadcast 2h ago
Flights observed
447
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AB34EA.

Country allocation

The ICAO 24-bit address AB34EA 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
DAL2196 Delta Air Lines 8 2026-04-21
DAL1643 - 7 2026-06-23
DAL523 Delta Air Lines 5 2026-04-22
DAL2415 Delta Air Lines 5 2026-05-19
DAL2253 - 5 2026-07-13
DAL1411 - 5 2026-06-23
DAL1203 Delta Air Lines 5 2026-07-01
DAL560 Delta Air Lines 4 2026-04-22
DAL481 - 4 2026-06-25
DAL2500 - 4 2026-06-25
DAL2078 Delta Air Lines 4 2026-05-04
DAL1913 Delta Air Lines 4 2026-05-26
DAL1547 Delta Air Lines 4 2026-06-04
DAL1147 Delta Air Lines 4 2026-06-04
DAL1045 Delta Air Lines 4 2026-04-22
DAL941 - 3 2026-07-12
DAL933 Delta Air Lines 3 2026-06-02
DAL8788 Delta Air Lines 3 2026-05-03
DAL874 Delta Air Lines 3 2026-05-29
DAL449 Delta Air Lines 3 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2180 - Jul 14, 02:00 UTCJul 14, 05:05 UTC3h 5m
2026-07-13 DAL2114 MSP → LAX Jul 13, 21:05 UTCJul 14, 00:20 UTC3h 15m
2026-07-13 DAL630 LAS → MSP Jul 13, 16:45 UTCJul 13, 19:30 UTC2h 45m
2026-07-13 DAL2253 - Jul 13, 14:30 UTCJul 13, 15:15 UTC45m
2026-07-13 DAL1197 SLC → LAX Jul 13, 06:05 UTCJul 13, 07:30 UTC1h 25m
2026-07-13 DAL1197 SLC → LAX Jul 13, 06:04 UTCJul 13, 07:26 UTC1h 22m
2026-07-13 DAL2607 MSP → SLC Jul 13, 00:10 UTCJul 13, 02:25 UTC2h 15m
2026-07-12 DAL941 - Jul 12, 22:30 UTCJul 12, 22:40 UTC10m
2026-07-12 DAL941 SEA → MSP Jul 12, 19:30 UTCJul 12, 22:12 UTC2h 42m
2026-07-12 DAL941 SEA → MSP Jul 12, 19:30 UTCJul 12, 22:40 UTC3h 10m
2026-07-12 DAL868 MSP → SEA Jul 12, 14:20 UTCJul 12, 17:30 UTC3h 10m
2026-07-12 DAL2510 LGA → MSP Jul 12, 10:10 UTCJul 12, 12:30 UTC2h 20m
2026-07-12 DAL2510 LGA → MSP Jul 12, 10:09 UTCJul 12, 12:28 UTC2h 19m
2026-07-11 DAL2396 - Jul 11, 20:15 UTCJul 11, 22:45 UTC2h 30m
2026-07-11 DAL2396 - Jul 11, 16:05 UTCJul 11, 18:20 UTC2h 15m
2026-07-11 DAL2723 TPA → LGA Jul 11, 11:45 UTCJul 11, 14:15 UTC2h 30m
2026-07-11 DAL2433 LGA → TPA Jul 11, 01:25 UTCJul 11, 03:45 UTC2h 20m
2026-07-10 DAL2195 TPA → LGA Jul 10, 18:55 UTCJul 10, 21:20 UTC2h 25m
2026-07-10 DAL2195 LGA → TPA Jul 10, 14:55 UTCJul 10, 17:10 UTC2h 15m
2026-07-10 DAL2387 - Jul 10, 10:50 UTCJul 10, 13:10 UTC2h 20m
2026-07-10 DAL2382 - Jul 10, 01:40 UTCJul 10, 04:15 UTC2h 35m
2026-07-09 DAL1538 HWO → LGA Jul 9, 20:35 UTCJul 9, 23:50 UTC3h 15m
2026-07-09 DAL1538 LGA → MIA Jul 9, 15:55 UTCJul 9, 18:30 UTC2h 35m
2026-07-09 DAL2532 - Jul 9, 11:35 UTCJul 9, 14:00 UTC2h 25m
2026-07-09 DAL2410 - Jul 9, 01:35 UTCJul 9, 04:05 UTC2h 30m
2026-07-08 DAL2604 - Jul 8, 22:50 UTCJul 9, 00:10 UTC1h 20m
2026-07-08 DAL1468 - Jul 8, 18:35 UTCJul 8, 21:00 UTC2h 25m
2026-07-08 DAL1468 - Jul 8, 13:40 UTCJul 8, 16:10 UTC2h 30m
2026-07-07 DAL1262 ATL → DTW Jul 7, 23:40 UTCJul 8, 01:15 UTC1h 35m
2026-07-07 DAL1262 ATL → DTW Jul 7, 23:36 UTCJul 8, 01:11 UTC1h 35m
2026-07-07 DAL1196 RSW → ATL Jul 7, 19:45 UTCJul 7, 21:05 UTC1h 20m
2026-07-07 DAL1196 ATL → RSW Jul 7, 17:00 UTCJul 7, 18:25 UTC1h 25m
2026-07-07 DAL3128 MSY → ATL Jul 7, 14:35 UTCJul 7, 15:35 UTC1h 0m
2026-07-07 DAL3128 ATL → MSY Jul 7, 11:45 UTCJul 7, 12:50 UTC1h 5m
2026-07-07 DAL635 - Jul 7, 06:00 UTCJul 7, 09:40 UTC3h 40m
2026-07-07 DAL635 BOI → ATL Jul 7, 05:57 UTCJul 7, 09:36 UTC3h 39m
2026-07-07 DAL704 - Jul 7, 00:25 UTCJul 7, 04:10 UTC3h 45m
2026-07-06 DAL1804 GDL → ATL Jul 6, 19:09 UTCJul 6, 22:12 UTC3h 3m
2026-07-06 DAL1992 ATL → ATL Jul 6, 14:05 UTCJul 6, 22:10 UTC8h 5m
2026-07-06 DAL3001 BNA → ATL Jul 6, 11:35 UTCJul 6, 12:15 UTC40m
2026-07-06 DAL790 ATL → BNA Jul 6, 01:05 UTCJul 6, 01:45 UTC40m
2026-07-05 DAL1800 MBJ → ATL Jul 5, 19:47 UTCJul 5, 22:16 UTC2h 29m
2026-07-05 DAL1800 ATL → ATL Jul 5, 15:35 UTCJul 5, 22:25 UTC6h 50m
2026-07-05 DAL1879 - Jul 5, 10:05 UTCJul 5, 13:20 UTC3h 15m
2026-07-05 DAL1861 - Jul 5, 02:40 UTCJul 5, 03:00 UTC20m
2026-07-04 DAL1861 ATL → SJU Jul 4, 23:49 UTCJul 5, 03:00 UTC3h 11m
2026-07-04 DAL1861 - Jul 4, 23:50 UTCJul 5, 00:40 UTC50m
2026-07-04 DAL1870 GCM → ATL Jul 4, 17:59 UTCJul 4, 20:10 UTC2h 11m
2026-07-04 DAL600 ATL → ATL Jul 4, 14:05 UTCJul 4, 20:10 UTC6h 5m
2026-07-04 DAL2838 RDU → LGA Jul 4, 10:10 UTCJul 4, 11:25 UTC1h 15m

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 N821DN page for operator, model, and routing details .

Mode-S AB34EA frequently asked

What is Mode-S code AB34EA?
AB34EA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N821DN.
Where is Mode-S AB34EA registered?
Mode-S code AB34EA 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 AB34EA 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 AB34EA, octal 52632352, decimal 11,220,202.
What flights does AB34EA operate?
Mode-S AB34EA has broadcast 20 distinct callsigns, including DAL2196, DAL1643, DAL523, DAL2415, DAL2253.