Apparatus

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sensors Mode-S transponder

AB2B2C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N819DX · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
AB2B2C
Octal
52625454
Decimal
11,217,708
Country
US
Tail
N819DX
Type
B752
No current signal · last broadcast Jul 26, 22:35 UTC
Flights observed
518
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:35 UTC

Last known position

Most recent position reported by Mode-S AB2B2C.

Country allocation

The ICAO 24-bit address AB2B2C 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
DAL260 Delta Air Lines 25 2026-07-25
DAL1048 Delta Air Lines 23 2026-07-21
DAL1747 - 19 2026-07-17
DAL261 - 18 2026-07-21
DAL2188 Delta Air Lines 18 2026-07-25
DAL3132 - 15 2026-07-10
DAL2654 Delta Air Lines 15 2026-07-24
DAL3024 Delta Air Lines 14 2026-05-21
DAL2486 Delta Air Lines 11 2026-05-21
DAL1646 - 11 2026-06-29
DAL1497 Delta Air Lines 11 2026-05-04
DAL1030 Delta Air Lines 11 2026-05-03
DAL927 - 10 2026-07-22
DAL2171 Delta Air Lines 10 2026-07-26
DAL1379 Delta Air Lines 10 2026-05-06
DAL1658 Delta Air Lines 9 2026-05-06
DAL1005 - 9 2026-07-10
DAL651 Delta Air Lines 8 2026-07-20
DAL2990 Delta Air Lines 8 2026-06-02
DAL2067 Delta Air Lines 8 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2171 FLL → CVG Jul 26, 19:10 UTCJul 26, 22:35 UTC3h 25m
2026-07-26 DAL2171 FLL → CVG Jul 26, 13:05 UTCJul 26, 17:25 UTC4h 20m
2026-07-26 DAL2940 ATL → DTW Jul 26, 03:10 UTCJul 26, 04:35 UTC1h 25m
2026-07-26 DAL2940 ATL → DTW Jul 26, 03:08 UTCJul 26, 04:37 UTC1h 29m
2026-07-25 DAL2345 ATL → MSY Jul 25, 23:10 UTCJul 26, 01:10 UTC2h 0m
2026-07-25 DAL2345 ATL → MSY Jul 25, 19:45 UTCJul 25, 21:20 UTC1h 35m
2026-07-25 DAL2188 DTW → ATL Jul 25, 16:45 UTCJul 25, 18:10 UTC1h 25m
2026-07-25 DAL2188 DTW → ATL Jul 25, 16:44 UTCJul 25, 18:16 UTC1h 32m
2026-07-25 DAL179 AMS → PDX Jul 25, 09:05 UTCJul 25, 14:40 UTC5h 35m
2026-07-25 DAL179 AMS → PDX Jul 25, 09:03 UTCJul 25, 14:38 UTC5h 35m
2026-07-25 DAL260 CUN → RDU Jul 25, 01:35 UTCJul 25, 07:00 UTC5h 25m
2026-07-24 DAL2654 BOS → RDU Jul 24, 21:40 UTCJul 24, 23:50 UTC2h 10m
2026-07-24 DAL2654 BOS → RDU Jul 24, 21:38 UTCJul 24, 23:51 UTC2h 13m
2026-07-24 DAL2188 DTW → ATL Jul 24, 18:05 UTCJul 24, 20:00 UTC1h 55m
2026-07-24 DAL179 AMS → PDX Jul 24, 09:40 UTCJul 24, 15:00 UTC5h 20m
2026-07-24 DAL179 AMS → PDX Jul 24, 09:37 UTCJul 24, 15:28 UTC5h 51m
2026-07-24 DAL260 CUN → RDU Jul 24, 06:25 UTCJul 24, 06:45 UTC20m
2026-07-24 DAL260 CUN → RDU Jul 24, 01:15 UTCJul 24, 01:55 UTC40m
2026-07-24 DAL260 CUN → RDU Jul 24, 01:12 UTCJul 24, 06:47 UTC5h 35m
2026-07-23 DAL2654 BOS → RDU Jul 23, 21:05 UTCJul 23, 23:15 UTC2h 10m
2026-07-23 DAL2188 DTW → ATL Jul 23, 17:15 UTCJul 23, 18:50 UTC1h 35m
2026-07-23 DAL2188 DTW → ATL Jul 23, 17:13 UTCJul 23, 18:42 UTC1h 29m
2026-07-23 DAL9961 VQQ → ATL Jul 23, 14:11 UTCJul 23, 15:39 UTC1h 28m
2026-07-23 DAL9961 VQQ → ATL Jul 23, 14:15 UTCJul 23, 15:45 UTC1h 30m
2026-07-22 DAL927 - Jul 22, 15:45 UTCJul 22, 19:15 UTC3h 30m
2026-07-22 DAL955 SFO → ATL Jul 22, 02:35 UTCJul 22, 05:25 UTC2h 50m
2026-07-21 DAL1048 ATL → CHA Jul 21, 22:20 UTCJul 22, 00:35 UTC2h 15m
2026-07-21 DAL261 KEF → MSP Jul 21, 10:10 UTCJul 21, 16:10 UTC6h 0m
2026-07-21 DAL178 - Jul 21, 02:15 UTCJul 21, 07:30 UTC5h 15m
2026-07-20 DAL2171 PDX → DTW Jul 20, 19:25 UTCJul 20, 22:55 UTC3h 30m
2026-07-20 DAL2171 ARB → PDX Jul 20, 13:20 UTCJul 20, 17:35 UTC4h 15m
2026-07-20 DAL651 DTW → PHL Jul 20, 04:00 UTCJul 20, 05:30 UTC1h 30m
2026-07-19 DAL1048 MSP → ATL Jul 19, 18:55 UTCJul 19, 21:00 UTC2h 5m
2026-07-19 DAL261 - Jul 19, 11:20 UTCJul 19, 17:15 UTC5h 55m
2026-07-19 DAL178 - Jul 19, 03:55 UTCJul 19, 09:05 UTC5h 10m
2026-07-19 DAL178 DTW → KEF Jul 19, 03:54 UTCJul 19, 09:09 UTC5h 15m
2026-07-18 DAL2171 - Jul 18, 19:10 UTCJul 18, 22:55 UTC3h 45m
2026-07-18 DAL2171 - Jul 18, 13:15 UTCJul 18, 17:30 UTC4h 15m
2026-07-18 DAL502 LAS → DTW Jul 18, 07:30 UTCJul 18, 11:02 UTC3h 32m
2026-07-18 DAL502 LAS → DTW Jul 18, 07:30 UTCJul 18, 11:05 UTC3h 35m
2026-07-18 DAL544 ATL → LGA Jul 18, 00:29 UTCJul 18, 04:15 UTC3h 46m
2026-07-17 DAL1747 MCO → DTW Jul 17, 20:44 UTCJul 17, 22:55 UTC2h 10m
2026-07-17 DAL1747 - Jul 17, 14:44 UTCJul 17, 16:49 UTC2h 5m
2026-07-17 DAL651 ATL → DTW Jul 17, 03:39 UTCJul 17, 05:04 UTC1h 25m
2026-07-17 DAL1101 MIA → ATL Jul 17, 00:40 UTCJul 17, 01:55 UTC1h 15m
2026-07-16 DAL1101 MIA → ATL Jul 16, 19:50 UTCJul 16, 21:05 UTC1h 15m
2026-07-16 DAL2188 - Jul 16, 16:49 UTCJul 16, 18:19 UTC1h 30m
2026-07-16 DAL179 KEF → DTW Jul 16, 09:05 UTCJul 16, 14:50 UTC5h 45m
2026-07-16 DAL179 KEF → DTW Jul 16, 09:01 UTCJul 16, 14:45 UTC5h 44m
2026-07-16 DAL260 MSP → KEF Jul 16, 01:30 UTCJul 16, 07:05 UTC5h 35m

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 N819DX page for operator, model, and routing details .

Mode-S AB2B2C frequently asked

What is Mode-S code AB2B2C?
AB2B2C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N819DX.
Where is Mode-S AB2B2C registered?
Mode-S code AB2B2C 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 AB2B2C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB2B2C, octal 52625454, decimal 11,217,708.
What flights does AB2B2C operate?
Mode-S AB2B2C has broadcast 20 distinct callsigns, including DAL260, DAL1048, DAL1747, DAL261, DAL2188.