Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3813B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N325DN · AIRBUS A-321 · operated by BANK OF UTAH TRUSTEE

Hex
A3813B
Octal
50700473
Decimal
10,715,451
Country
US
Tail
N325DN
Type
A321
No current signal · last broadcast 1h ago
Flights observed
497
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A3813B.

Country allocation

The ICAO 24-bit address A3813B 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
DAL838 - 10 2026-06-18
DAL2487 Delta Air Lines 9 2026-07-05
DAL2871 - 8 2026-07-05
DAL2720 Delta Air Lines 8 2026-05-06
DAL2489 Delta Air Lines 8 2026-07-05
DAL2397 Delta Air Lines 8 2026-06-05
DAL2279 Delta Air Lines 8 2026-05-31
DAL1881 - 8 2026-07-06
DAL1330 - 8 2026-07-05
DAL1878 - 7 2026-07-06
DAL1311 Delta Air Lines 7 2026-05-03
DAL641 Delta Air Lines 6 2026-06-10
DAL2353 - 6 2026-07-09
DAL2035 Delta Air Lines 6 2026-06-10
DAL1315 Delta Air Lines 6 2026-06-13
DAL1148 Delta Air Lines 6 2026-05-22
DAL852 Delta Air Lines 5 2026-04-29
DAL586 Delta Air Lines 5 2026-06-10
DAL2951 Delta Air Lines 5 2026-04-29
DAL2552 Delta Air Lines 5 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1341 - Jul 14, 16:35 UTCJul 14, 16:45 UTC10m
2026-07-14 DAL2365 EWR → ATL Jul 14, 13:05 UTCJul 14, 14:40 UTC1h 35m
2026-07-13 DAL2498 ATL → EWR Jul 13, 23:40 UTCJul 14, 01:25 UTC1h 45m
2026-07-13 DAL2312 - Jul 13, 20:05 UTCJul 13, 21:55 UTC1h 50m
2026-07-13 DAL2312 EWR → ATL Jul 13, 20:01 UTCJul 13, 21:51 UTC1h 50m
2026-07-13 DAL2312 ATL → EWR Jul 13, 16:45 UTCJul 13, 18:30 UTC1h 45m
2026-07-13 DAL2899 AUS → ATL Jul 13, 13:25 UTCJul 13, 15:15 UTC1h 50m
2026-07-13 DAL1170 ATL → AUS Jul 13, 01:20 UTCJul 13, 03:20 UTC2h 0m
2026-07-12 DAL1341 - Jul 12, 20:25 UTCJul 12, 22:05 UTC1h 40m
2026-07-12 DAL1341 FLL → ATL Jul 12, 20:24 UTCJul 12, 22:00 UTC1h 36m
2026-07-12 DAL1341 ATL → FLL Jul 12, 17:01 UTCJul 12, 18:35 UTC1h 35m
2026-07-12 DAL1479 CMH → ATL Jul 12, 14:15 UTCJul 12, 15:25 UTC1h 10m
2026-07-12 DAL1479 CMH → ATL Jul 12, 14:15 UTCJul 12, 15:20 UTC1h 5m
2026-07-12 DAL1479 ATL → CMH Jul 12, 11:35 UTCJul 12, 12:50 UTC1h 15m
2026-07-12 DAL1397 AUS → ATL Jul 12, 00:08 UTCJul 12, 02:02 UTC1h 54m
2026-07-12 DAL1397 AUS → ATL Jul 12, 00:10 UTCJul 12, 02:05 UTC1h 55m
2026-07-11 DAL1397 ATL → AUS Jul 11, 19:50 UTCJul 11, 21:45 UTC1h 55m
2026-07-11 DAL385 BOS → ATL Jul 11, 14:48 UTCJul 11, 17:10 UTC2h 22m
2026-07-11 DAL385 BOS → ATL Jul 11, 14:50 UTCJul 11, 17:15 UTC2h 25m
2026-07-10 DAL1502 MSP → BOS Jul 10, 23:35 UTCJul 11, 01:45 UTC2h 10m
2026-07-10 DAL1127 BOS → MSP Jul 10, 19:15 UTCJul 10, 22:10 UTC2h 56m
2026-07-10 DAL862 ATL → BNH Jul 10, 15:35 UTCJul 10, 17:40 UTC2h 5m
2026-07-10 DAL1301 - Jul 10, 12:15 UTCJul 10, 13:35 UTC1h 20m
2026-07-10 DAL1606 - Jul 10, 02:30 UTCJul 10, 03:55 UTC1h 25m
2026-07-09 DAL665 - Jul 9, 19:15 UTCJul 9, 23:10 UTC3h 55m
2026-07-09 DAL665 ONT → ATL Jul 9, 19:10 UTCJul 9, 23:09 UTC3h 59m
2026-07-09 DAL665 ATL → ONT Jul 9, 14:00 UTCJul 9, 17:55 UTC3h 55m
2026-07-09 DAL2353 - Jul 9, 10:50 UTCJul 9, 12:35 UTC1h 45m
2026-07-08 DAL2498 ATL → EWR Jul 8, 23:15 UTCJul 9, 01:20 UTC2h 5m
2026-07-08 DAL1372 MCO → ATL Jul 8, 19:55 UTCJul 8, 21:00 UTC1h 5m
2026-07-08 DAL1372 ATL → MCO Jul 8, 17:10 UTCJul 8, 18:10 UTC1h 0m
2026-07-08 DAL1052 MSP → ATL Jul 8, 13:55 UTCJul 8, 15:55 UTC2h 0m
2026-07-08 DAL756 SFO → MSP Jul 8, 01:25 UTCJul 8, 04:25 UTC3h 0m
2026-07-07 DAL756 MSP → SFO Jul 7, 20:20 UTCJul 8, 00:00 UTC3h 40m
2026-07-07 DAL2724 DAY → ATL Jul 7, 15:10 UTCJul 7, 16:55 UTC1h 45m
2026-07-07 DAL2724 DAY → ATL Jul 7, 12:00 UTCJul 7, 13:35 UTC1h 35m
2026-07-06 DAL1878 CUN → MSP Jul 6, 19:45 UTCJul 6, 23:05 UTC3h 20m
2026-07-06 DAL1878 CUN → MSP Jul 6, 19:40 UTCJul 6, 23:05 UTC3h 25m
2026-07-06 DAL1881 MSP → CUN Jul 6, 14:20 UTCJul 6, 18:00 UTC3h 40m
2026-07-05 DAL2489 YUL → ATL Jul 5, 20:45 UTCJul 5, 22:55 UTC2h 10m
2026-07-05 DAL2489 YUL → ATL Jul 5, 20:43 UTCJul 5, 22:52 UTC2h 9m
2026-07-05 DAL2487 DTW → TVC Jul 5, 16:35 UTCJul 5, 19:00 UTC2h 25m
2026-07-05 DAL1330 - Jul 5, 11:45 UTCJul 5, 14:25 UTC2h 40m
2026-07-05 DAL2871 MSP → BDL Jul 5, 02:45 UTCJul 5, 04:55 UTC2h 10m
2026-07-04 DAL1878 CUN → MSP Jul 4, 19:25 UTCJul 4, 23:10 UTC3h 45m
2026-07-04 DAL1881 MSP → CUN Jul 4, 14:05 UTCJul 4, 17:50 UTC3h 45m
2026-07-04 DAL2752 SNA → SEA Jul 4, 10:05 UTCJul 4, 11:35 UTC1h 30m
2026-07-04 DAL1469 MSP → CVG Jul 4, 01:35 UTCJul 4, 03:20 UTC1h 45m
2026-07-03 DAL1878 CUN → MSP Jul 3, 19:35 UTCJul 3, 23:15 UTC3h 40m
2026-07-03 DAL1881 MSP → CUN Jul 3, 14:19 UTCJul 3, 18:07 UTC3h 48m

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 N325DN page for operator, model, and routing details .

Mode-S A3813B frequently asked

What is Mode-S code A3813B?
A3813B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N325DN.
Where is Mode-S A3813B registered?
Mode-S code A3813B 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 A3813B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3813B, octal 50700473, decimal 10,715,451.
What flights does A3813B operate?
Mode-S A3813B has broadcast 20 distinct callsigns, including DAL838, DAL2487, DAL2871, DAL2720, DAL2489.