Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

881055

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-DBU · BOEING 737-800

Hex
881055
Octal
42010125
Decimal
8,917,077
Country
TH
Tail
HS-DBU
Type
B738
No current signal · last broadcast 11d ago
Flights observed
69
Distinct callsigns
20
Country
TH
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 881055.

Country allocation

The ICAO 24-bit address 881055 falls within the block assigned to Thailand (TH) by ICAO Annex 10, Volume III. Every aircraft registered in Thailand 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
NOK605 - 4 2026-04-20
NOK173 - 4 2026-04-21
NOK172 Nok Air 4 2026-04-21
NOK604 - 3 2026-04-20
NOK551 Nok Air 3 2026-04-19
NOK539 Nok Air 3 2026-04-20
NOK525 Nok Air 3 2026-04-20
NOK120 Nok Air 3 2026-04-21
NOK574 - 2 2026-04-14
NOK543 Nok Air 2 2026-04-13
NOK542 Nok Air 2 2026-04-22
NOK536 - 2 2026-04-17
NOK524 Nok Air 2 2026-04-16
NOK523 Nok Air 2 2026-04-18
NOK509 - 2 2026-04-19
NOK3010 - 2 2026-07-03
NOK148 - 2 2026-04-13
NOK121 Nok Air 2 2026-04-22
NOK575 - 1 2026-04-14
NOK557 - 1 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 NOK3010 - Jul 3, 01:20 UTCJul 3, 01:45 UTC25m
2026-07-02 NOK3010 - Jul 2, 23:40 UTCJul 3, 00:00 UTC20m
2026-06-04 NOK3015 - Jun 4, 06:50 UTCJun 4, 07:45 UTC55m
2026-04-22 NOK542 DMK → KBV Apr 22, 03:25 UTCApr 22, 04:05 UTC40m
2026-04-22 NOK121 CNX → DMK Apr 22, 01:35 UTCApr 22, 02:25 UTC50m
2026-04-21 NOK120 DMK → CNX Apr 21, 23:50 UTCApr 22, 00:45 UTC55m
2026-04-21 NOK326 DMK → UBP Apr 21, 11:40 UTCApr 21, 14:01 UTC2h 20m
2026-04-21 NOK307 UTH → DMK Apr 21, 09:30 UTCApr 21, 10:15 UTC45m
2026-04-21 NOK306 DMK → UTH Apr 21, 07:55 UTCApr 21, 08:35 UTC40m
2026-04-21 NOK173 - Apr 21, 04:50 UTCApr 21, 05:30 UTC40m
2026-04-21 NOK172 DMK → URT Apr 21, 03:00 UTCApr 21, 03:40 UTC40m
2026-04-20 NOK539 HKT → DMK Apr 20, 14:35 UTCApr 21, 01:50 UTC11h 15m
2026-04-20 NOK605 - Apr 20, 12:45 UTCApr 20, 13:20 UTC35m
2026-04-20 NOK604 - Apr 20, 11:00 UTCApr 20, 11:30 UTC30m
2026-04-20 NOK525 HKT → DMK Apr 20, 06:40 UTCApr 20, 10:00 UTC3h 20m
2026-04-20 NOK173 - Apr 20, 04:50 UTCApr 20, 05:30 UTC40m
2026-04-20 NOK172 DMK → URT Apr 20, 03:00 UTCApr 20, 03:35 UTC35m
2026-04-19 NOK551 NST → DMK Apr 19, 23:05 UTCApr 20, 01:55 UTC2h 50m
2026-04-19 NOK509 - Apr 19, 11:20 UTCApr 19, 14:30 UTC3h 10m
2026-04-19 NOK525 HKT → DMK Apr 19, 06:35 UTCApr 19, 09:55 UTC3h 20m
2026-04-19 NOK323 UBP → DMK Apr 19, 02:55 UTCApr 19, 05:15 UTC2h 20m
2026-04-18 NOK551 NST → DMK Apr 18, 23:00 UTCApr 19, 02:05 UTC3h 5m
2026-04-18 NOK509 - Apr 18, 11:05 UTCApr 18, 14:20 UTC3h 15m
2026-04-18 NOK365 - Apr 18, 09:35 UTCApr 18, 09:45 UTC10m
2026-04-18 NOK364 - Apr 18, 07:10 UTCApr 18, 07:20 UTC10m
2026-04-18 NOK523 HKT → DMK Apr 18, 05:40 UTCApr 18, 06:10 UTC30m
2026-04-18 NOK522 DMK → HKT Apr 18, 02:55 UTCApr 18, 03:15 UTC20m
2026-04-18 NOK539 HKT → DMK Apr 18, 01:25 UTCApr 18, 01:50 UTC25m
2026-04-17 NOK536 - Apr 17, 14:45 UTCApr 17, 15:10 UTC24m
2026-04-17 NOK547 - Apr 17, 12:10 UTCApr 17, 13:00 UTC50m
2026-04-17 NOK546 DMK → KBV Apr 17, 09:55 UTCApr 17, 10:35 UTC40m
2026-04-17 NOK173 - Apr 17, 08:00 UTCApr 17, 08:15 UTC15m
2026-04-17 NOK172 DMK → URT Apr 17, 04:20 UTCApr 17, 04:30 UTC10m
2026-04-17 NOK551 NST → DMK Apr 17, 01:20 UTCApr 17, 02:00 UTC40m
2026-04-16 NOK550 - Apr 16, 23:20 UTCApr 17, 01:15 UTC1h 55m
2026-04-16 NOK605 - Apr 16, 12:29 UTCApr 16, 13:05 UTC35m
2026-04-16 NOK604 - Apr 16, 11:09 UTCApr 16, 11:44 UTC35m
2026-04-16 NOK525 HKT → DMK Apr 16, 09:10 UTCApr 16, 09:54 UTC45m
2026-04-16 NOK524 DMK → HKT Apr 16, 07:09 UTCApr 16, 09:05 UTC1h 55m
2026-04-16 NOK524 DMK → HKT Apr 16, 06:45 UTCApr 16, 07:05 UTC20m
2026-04-16 NOK173 - Apr 16, 05:09 UTCApr 16, 05:29 UTC20m
2026-04-16 NOK172 DMK → URT Apr 16, 03:09 UTCApr 16, 03:24 UTC15m
2026-04-16 NOK539 HKT → DMK Apr 16, 01:10 UTCApr 16, 01:55 UTC45m
2026-04-15 NOK536 - Apr 15, 15:05 UTCApr 15, 15:30 UTC25m
2026-04-15 NOK605 - Apr 15, 13:01 UTCApr 15, 13:15 UTC15m
2026-04-15 NOK605 - Apr 15, 12:35 UTCApr 15, 12:55 UTC20m
2026-04-15 NOK604 - Apr 15, 11:00 UTCApr 15, 11:35 UTC35m
2026-04-15 NOK197 - Apr 15, 09:45 UTCApr 15, 10:10 UTC25m
2026-04-15 NOK196 - Apr 15, 07:50 UTCApr 15, 08:10 UTC20m
2026-04-15 NOK125 CNX → DMK Apr 15, 05:40 UTCApr 15, 06:30 UTC50m

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 HS-DBU page for operator, model, and routing details .

Mode-S 881055 frequently asked

What is Mode-S code 881055?
881055 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-DBU.
Where is Mode-S 881055 registered?
Mode-S code 881055 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 881055 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 881055, octal 42010125, decimal 8,917,077.
What flights does 881055 operate?
Mode-S 881055 has broadcast 20 distinct callsigns, including NOK605, NOK173, NOK172, NOK604, NOK551.