sensors Mode-S transponder

881057

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-DBW · BOEING 737-800

Hex
881057
Octal
42010127
Decimal
8,917,079
Country
TH
Tail
HS-DBW
Type
B738
No current signal · last broadcast 12h ago
Flights observed
10
Distinct callsigns
10
Country
TH
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 881057.

Country allocation

The ICAO 24-bit address 881057 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 10 distinct

Callsign Airline Flights Last seen
NOK575 - 1 2026-04-13
NOK574 - 1 2026-04-13
NOK528 - 1 2026-04-14
NOK525 - 1 2026-04-14
NOK524 - 1 2026-04-14
NOK523 Nok Air 1 2026-04-13
NOK522 - 1 2026-04-13
NOK300 - 1 2026-04-13
NOK135 - 1 2026-04-13
NOK134 - 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 NOK528 - Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-14 NOK525 - Apr 14, 09:20 UTCApr 14, 09:45 UTC25m
2026-04-14 NOK524 - Apr 14, 06:35 UTCApr 14, 06:55 UTC20m
2026-04-13 NOK300 - Apr 13, 23:10 UTCApr 13, 23:25 UTC15m
2026-04-13 NOK135 - Apr 13, 12:40 UTCApr 13, 13:40 UTC1h 0m
2026-04-13 NOK134 - Apr 13, 11:10 UTCApr 13, 12:00 UTC50m
2026-04-13 NOK575 - Apr 13, 09:30 UTCApr 13, 10:15 UTC45m
2026-04-13 NOK574 - Apr 13, 07:25 UTCApr 13, 08:05 UTC40m
2026-04-13 NOK523 HKT → DMK Apr 13, 05:50 UTCApr 13, 06:20 UTC30m
2026-04-13 NOK522 - Apr 13, 02:50 UTCApr 13, 03:15 UTC25m

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-DBW page for operator, model, and routing details .

Mode-S 881057 frequently asked

What is Mode-S code 881057?
881057 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-DBW.
Where is Mode-S 881057 registered?
Mode-S code 881057 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 881057 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 881057, octal 42010127, decimal 8,917,079.
What flights does 881057 operate?
Mode-S 881057 has broadcast 10 distinct callsigns, including NOK575, NOK574, NOK528, NOK525, NOK524.