Apparatus

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sensors Mode-S transponder

A2B698

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N274NV · AIRBUS A-320 · operated by ALLEGIANT AIR LLC

Hex
A2B698
Octal
50533230
Decimal
10,663,576
Country
US
Tail
N274NV
Type
A320
No current signal · last broadcast 1h ago
Flights observed
143
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A2B698.

Country allocation

The ICAO 24-bit address A2B698 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
AAY404 Allegiant Air 3 2026-05-21
AAY2658 - 3 2026-04-13
AAY209 Allegiant Air 3 2026-04-24
AAY1825 Allegiant Air 3 2026-04-24
AAY1797 Allegiant Air 3 2026-04-24
AAY173 Allegiant Air 3 2026-04-30
AAY172 Allegiant Air 3 2026-04-24
AAY171 Allegiant Air 3 2026-04-30
AAY161 Allegiant Air 3 2026-04-30
AAY1036 - 3 2026-04-13
AAY973 - 2 2026-04-15
AAY972 - 2 2026-04-15
AAY430 Allegiant Air 2 2026-05-23
AAY421 Allegiant Air 2 2026-05-23
AAY407 Allegiant Air 2 2026-05-25
AAY393 Allegiant Air 2 2026-05-21
AAY391 Allegiant Air 2 2026-05-25
AAY387 Allegiant Air 2 2026-05-23
AAY386 Allegiant Air 2 2026-05-20
AAY373 Allegiant Air 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AAY926 PGD → PSM May 29, 21:40 UTCMay 29, 23:35 UTC1h 55m
2026-05-29 AAY2505 PGD → TVC May 29, 19:05 UTCMay 29, 20:40 UTC1h 35m
2026-05-29 AAY2566 PGD → SDF May 29, 16:20 UTCMay 29, 17:45 UTC1h 25m
2026-05-29 AAY2510 PGD → PVD May 29, 13:20 UTCMay 29, 15:10 UTC1h 50m
2026-05-29 AAY869 PGD → CVG May 29, 10:15 UTCMay 29, 12:05 UTC1h 50m
2026-05-29 AAY969 USA → PGD May 29, 00:25 UTCMay 29, 02:25 UTC2h 0m
2026-05-28 AAY897 PGD → TVC May 28, 21:15 UTCMay 28, 23:25 UTC2h 10m
2026-05-28 AAY2474 PGD → TVC May 28, 17:05 UTCMay 28, 20:10 UTC3h 5m
2026-05-28 AAY880 TVC → PGD May 28, 13:30 UTCMay 28, 16:00 UTC2h 30m
2026-05-28 AAY9205 SRQ → PIE May 28, 10:25 UTCMay 28, 12:20 UTC1h 55m
2026-05-26 AAY918 PGD → RFD May 26, 01:14 UTCMay 26, 03:05 UTC1h 50m
2026-05-25 AAY851 PGD → ALB May 25, 22:10 UTCMay 26, 00:14 UTC2h 5m
2026-05-25 AAY372 CVG → VPS May 25, 19:00 UTCMay 25, 20:40 UTC1h 39m
2026-05-25 AAY395 FLL → CVG May 25, 16:00 UTCMay 25, 17:50 UTC1h 50m
2026-05-25 AAY407 CVG → EYW May 25, 13:05 UTCMay 25, 14:45 UTC1h 40m
2026-05-25 AAY391 CVG → VPS May 25, 10:15 UTCMay 25, 12:05 UTC1h 50m
2026-05-24 AAY369 SFB → CVG May 24, 21:00 UTCMay 24, 23:46 UTC2h 46m
2026-05-24 AAY389 MYR → CVG May 24, 15:10 UTCMay 24, 19:25 UTC4h 15m
2026-05-24 AAY414 PGD → CVG May 24, 01:10 UTCMay 24, 03:20 UTC2h 10m
2026-05-23 AAY378 CVG → LAS May 23, 22:20 UTCMay 24, 00:05 UTC1h 45m
2026-05-23 AAY421 PIE → CVG May 23, 18:40 UTCMay 23, 20:35 UTC1h 55m
2026-05-23 AAY387 CVG → VPS May 23, 15:45 UTCMay 23, 17:45 UTC2h 0m
2026-05-23 AAY430 SFB → CVG May 23, 13:15 UTCMay 23, 14:40 UTC1h 25m
2026-05-23 AAY373 PIE → CVG May 23, 10:35 UTCMay 23, 11:55 UTC1h 20m
2026-05-23 AAY2013 SFB → CVG May 23, 01:25 UTCMay 23, 02:50 UTC1h 24m
2026-05-22 AAY1988 CVG → SFB May 22, 22:35 UTCMay 23, 00:05 UTC1h 30m
2026-05-22 AAY372 CVG → VPS May 22, 19:25 UTCMay 22, 21:10 UTC1h 45m
2026-05-22 AAY430 SFB → CVG May 22, 16:15 UTCMay 22, 18:05 UTC1h 50m
2026-05-22 AAY407 CVG → EYW May 22, 13:10 UTCMay 22, 14:50 UTC1h 40m
2026-05-22 AAY391 CVG → VPS May 22, 10:10 UTCMay 22, 12:00 UTC1h 50m
2026-05-21 AAY412 EWR → AVL May 21, 22:20 UTCMay 22, 02:20 UTC4h 0m
2026-05-21 AAY393 IAD → JAX May 21, 16:15 UTCMay 21, 20:50 UTC4h 35m
2026-05-21 AAY377 MYR → SYR May 21, 13:30 UTCMay 21, 15:00 UTC1h 30m
2026-05-21 AAY404 MYR → CVG May 21, 10:35 UTCMay 21, 12:15 UTC1h 40m
2026-05-20 AAY386 PBI → CVG May 20, 21:20 UTCMay 20, 22:45 UTC1h 25m
2026-05-20 AAY373 PIE → CVG May 20, 18:40 UTCMay 20, 19:55 UTC1h 15m
2026-05-20 AAY367 CVG → FLL May 20, 15:40 UTCMay 20, 17:25 UTC1h 45m
2026-05-20 AAY404 MYR → CVG May 20, 12:50 UTCMay 20, 14:35 UTC1h 45m
2026-05-18 AAY392 ALB → MYR May 18, 22:40 UTCMay 19, 00:35 UTC1h 55m
2026-05-18 AAY403 JAX → CVG May 18, 20:00 UTCMay 18, 21:25 UTC1h 25m
2026-05-18 AAY369 SFB → CVG May 18, 17:10 UTCMay 18, 18:40 UTC1h 29m
2026-05-18 AAY393 IAD → JAX May 18, 14:15 UTCMay 18, 15:35 UTC1h 20m
2026-05-18 AAY383 MSY → CVG May 18, 02:30 UTCMay 18, 04:05 UTC1h 35m
2026-05-17 AAY394 LAS → CVG May 17, 23:00 UTCMay 18, 00:35 UTC1h 35m
2026-05-17 AAY402 PGD → CVG May 17, 19:15 UTCMay 17, 21:01 UTC1h 45m
2026-05-17 AAY388 CVG → PGD May 17, 16:30 UTCMay 17, 18:05 UTC1h 35m
2026-05-17 AAY396 LAS → CVG May 17, 13:31 UTCMay 17, 15:10 UTC1h 40m
2026-05-17 AAY387 CVG → VPS May 17, 10:35 UTCMay 17, 12:10 UTC1h 35m
2026-05-16 AAY398 CVG → ORF May 16, 21:00 UTCMay 16, 22:45 UTC1h 45m
2026-05-16 AAY404 MYR → CVG May 16, 18:00 UTCMay 16, 19:40 UTC1h 40m

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 N274NV page for operator, model, and routing details .

Mode-S A2B698 frequently asked

What is Mode-S code A2B698?
A2B698 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N274NV.
Where is Mode-S A2B698 registered?
Mode-S code A2B698 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 A2B698 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 A2B698, octal 50533230, decimal 10,663,576.
What flights does A2B698 operate?
Mode-S A2B698 has broadcast 20 distinct callsigns, including AAY404, AAY2658, AAY209, AAY1825, AAY1797.