Apparatus

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sensors Mode-S transponder

A5B2B0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4663K · operated by UMB BANK NA TRUSTEE

Hex
A5B2B0
Octal
51331260
Decimal
10,859,184
Country
US
Tail
N4663K
Type
A333
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
244
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S A5B2B0.

Country allocation

The ICAO 24-bit address A5B2B0 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
ASA2608 - 38 2026-07-17
ASA2749 - 29 2026-07-17
ASA2605 Alaska Airlines 26 2026-07-17
ASA2614 - 17 2026-06-28
ASA2612 - 15 2026-07-21
ASA2602 - 13 2026-06-25
ASA2618 - 11 2026-07-15
ASA2609 Alaska Airlines 11 2026-05-16
ASA2617 - 9 2026-06-28
ASA2607 Alaska Airlines 9 2026-05-17
ASA2616 - 8 2026-07-18
ASA2621 Alaska Airlines 6 2026-05-14
ASA2627 Alaska Airlines 5 2026-07-21
ASA2613 Alaska Airlines 5 2026-06-24
ASA2610 Alaska Airlines 5 2026-07-26
ASA2603 Alaska Airlines 5 2026-07-26
ASA2623 Alaska Airlines 4 2026-07-20
ASA2620 Alaska Airlines 4 2026-05-25
ASA2611 - 4 2026-07-20
ASA2604 Alaska Airlines 4 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA2603 CVG → IAH Jul 26, 19:05 UTCJul 26, 21:00 UTC1h 55m
2026-07-26 ASA2610 SMF → CVG Jul 26, 04:35 UTCJul 26, 06:35 UTC2h 1m
2026-07-25 ASA2603 CVG → IAH Jul 25, 19:05 UTCJul 25, 21:10 UTC2h 5m
2026-07-25 ASA2610 SMF → CVG Jul 25, 04:30 UTCJul 25, 06:25 UTC1h 55m
2026-07-24 ASA2603 CVG → IAH Jul 24, 19:05 UTCJul 24, 21:05 UTC2h 0m
2026-07-24 ASA2610 SMF → CVG Jul 24, 04:30 UTCJul 24, 06:20 UTC1h 50m
2026-07-23 ASA2603 CVG → IAH Jul 23, 19:25 UTCJul 23, 21:20 UTC1h 55m
2026-07-23 ASA2610 SMF → CVG Jul 23, 05:20 UTCJul 23, 07:15 UTC1h 55m
2026-07-22 ASA2629 - Jul 22, 20:30 UTCJul 22, 23:25 UTC2h 55m
2026-07-22 ASA2628 IAH → SBD Jul 22, 02:05 UTCJul 22, 04:45 UTC2h 40m
2026-07-21 ASA2629 - Jul 21, 20:15 UTCJul 21, 23:05 UTC2h 50m
2026-07-21 ASA2612 PDX → SBD Jul 21, 13:40 UTCJul 21, 15:40 UTC2h 0m
2026-07-21 ASA2627 CVG → PDX Jul 21, 05:15 UTCJul 21, 09:35 UTC4h 20m
2026-07-20 ASA2611 SMF → CVG Jul 20, 18:35 UTCJul 20, 22:35 UTC4h 0m
2026-07-20 ASA2623 CVG → SMF Jul 20, 05:10 UTCJul 20, 09:10 UTC4h 0m
2026-07-19 ASA2611 SMF → CVG Jul 19, 18:25 UTCJul 19, 22:30 UTC4h 5m
2026-07-19 ASA2623 CVG → SMF Jul 19, 06:25 UTCJul 19, 10:25 UTC4h 0m
2026-07-18 ASA2616 SBD → CVG Jul 18, 20:05 UTCJul 18, 23:55 UTC3h 50m
2026-07-18 ASA2612 - Jul 18, 13:35 UTCJul 18, 15:40 UTC2h 5m
2026-07-18 ASA2627 CVG → PDX Jul 18, 06:20 UTCJul 18, 10:20 UTC4h 0m
2026-07-17 ASA2605 JFK → AFW Jul 17, 17:05 UTCJul 17, 20:55 UTC3h 50m
2026-07-17 ASA2749 - Jul 17, 06:00 UTCJul 17, 10:55 UTC4h 55m
2026-07-17 ASA2608 - Jul 17, 02:15 UTCJul 17, 02:34 UTC20m
2026-07-16 ASA2608 - Jul 16, 21:05 UTCJul 16, 21:50 UTC45m
2026-07-16 ASA2749 - Jul 16, 06:00 UTCJul 16, 10:50 UTC4h 50m
2026-07-16 ASA2608 - Jul 16, 02:25 UTCJul 16, 02:35 UTC10m
2026-07-15 ASA2608 - Jul 15, 21:05 UTCJul 15, 22:15 UTC1h 10m
2026-07-15 ASA2618 - Jul 15, 05:00 UTCJul 15, 08:35 UTC3h 35m
2026-07-14 ASA2616 SBD → CVG Jul 14, 21:00 UTCJul 15, 00:50 UTC3h 49m
2026-07-14 ASA2628 - Jul 14, 02:00 UTCJul 14, 04:40 UTC2h 40m
2026-07-13 ASA2603 - Jul 13, 21:00 UTCJul 13, 23:00 UTC2h 0m
2026-07-13 ASA2610 - Jul 13, 04:35 UTCJul 13, 06:35 UTC2h 0m
2026-07-12 ASA2629 - Jul 12, 20:35 UTCJul 12, 23:45 UTC3h 10m
2026-07-12 ASA2612 PDX → SBD Jul 12, 13:45 UTCJul 12, 15:50 UTC2h 5m
2026-07-12 ASA2627 - Jul 12, 05:15 UTCJul 12, 09:25 UTC4h 10m
2026-07-11 ASA2611 SMF → CVG Jul 11, 18:05 UTCJul 11, 22:01 UTC3h 55m
2026-07-11 ASA2623 - Jul 11, 05:15 UTCJul 11, 09:30 UTC4h 15m
2026-07-10 ASA2605 - Jul 10, 16:55 UTCJul 10, 20:30 UTC3h 35m
2026-07-10 ASA2749 - Jul 10, 05:50 UTCJul 10, 10:40 UTC4h 50m
2026-07-10 ASA2608 - Jul 10, 02:25 UTCJul 10, 02:45 UTC20m
2026-07-09 ASA2608 - Jul 9, 21:00 UTCJul 9, 21:45 UTC45m
2026-07-09 ASA2749 - Jul 9, 06:00 UTCJul 9, 11:00 UTC5h 0m
2026-07-09 ASA2608 - Jul 9, 02:20 UTCJul 9, 02:40 UTC20m
2026-07-08 ASA2608 - Jul 8, 20:50 UTCJul 8, 22:05 UTC1h 15m
2026-07-08 ASA2749 - Jul 8, 06:00 UTCJul 8, 11:05 UTC5h 5m
2026-07-08 ASA2608 - Jul 8, 02:00 UTCJul 8, 02:25 UTC25m
2026-07-07 ASA2608 - Jul 7, 21:00 UTCJul 7, 22:10 UTC1h 10m
2026-07-07 ASA2749 - Jul 7, 06:00 UTCJul 7, 10:45 UTC4h 45m
2026-07-07 ASA2608 - Jul 7, 02:10 UTCJul 7, 02:25 UTC15m
2026-07-06 ASA2608 - Jul 6, 21:00 UTCJul 6, 22:10 UTC1h 10m

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 N4663K page for operator, model, and routing details .

Mode-S A5B2B0 frequently asked

What is Mode-S code A5B2B0?
A5B2B0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4663K.
Where is Mode-S A5B2B0 registered?
Mode-S code A5B2B0 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 A5B2B0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5B2B0, octal 51331260, decimal 10,859,184.
What flights does A5B2B0 operate?
Mode-S A5B2B0 has broadcast 20 distinct callsigns, including ASA2608, ASA2749, ASA2605, ASA2614, ASA2612.