Apparatus

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sensors Mode-S transponder

881051

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-DBQ · BOEING 737-800

Hex
881051
Octal
42010121
Decimal
8,917,073
Country
TH
Tail
HS-DBQ
Type
B738
Broadcasting now · callsign NOK605 · 27,000 ft
Flights observed
434
Distinct callsigns
20
Country
TH
Last broadcast
5d ago

Current position

881051 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 881051 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
NOK172 - 17 2026-07-20
NOK196 - 16 2026-07-19
NOK572 Nok Air 15 2026-07-21
NOK173 - 15 2026-07-20
NOK605 - 14 2026-07-21
NOK604 - 14 2026-07-21
NOK574 - 14 2026-07-20
NOK575 - 13 2026-07-20
NOK573 Nok Air 13 2026-07-21
NOK197 - 13 2026-07-19
NOK133 Nok Air 11 2026-07-24
NOK132 Nok Air 11 2026-07-24
NOK360 - 10 2026-07-23
NOK135 Nok Air 10 2026-07-20
NOK322 Nok Air 9 2026-07-26
NOK134 - 9 2026-07-20
NOK121 - 9 2026-07-08
NOK120 - 9 2026-07-07
NOK551 - 8 2026-07-11
NOK547 Nok Air 8 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NOK547 KBV → DMK Jul 26, 10:25 UTCJul 26, 13:25 UTC3h 0m
2026-07-26 NOK592 DMK → TST Jul 26, 06:10 UTCJul 26, 09:15 UTC3h 6m
2026-07-26 NOK323 UBP → DMK Jul 26, 04:45 UTCJul 26, 05:20 UTC35m
2026-07-26 NOK322 DMK → UBP Jul 26, 02:50 UTCJul 26, 03:20 UTC30m
2026-07-25 NOK364 - Jul 25, 06:40 UTCJul 25, 09:10 UTC2h 30m
2026-07-25 NOK101 CEI → DMK Jul 25, 03:40 UTCJul 25, 04:35 UTC55m
2026-07-25 NOK100 DMK → CEI Jul 25, 01:45 UTCJul 25, 02:50 UTC1h 5m
2026-07-24 NOK133 CNX → DMK Jul 24, 09:45 UTCJul 24, 10:40 UTC55m
2026-07-24 NOK132 DMK → CNX Jul 24, 07:45 UTCJul 24, 08:40 UTC55m
2026-07-24 NOK125 CNX → DMK Jul 24, 05:40 UTCJul 24, 06:25 UTC45m
2026-07-24 NOK124 DMK → CNX Jul 24, 03:45 UTCJul 24, 04:35 UTC50m
2026-07-23 NOK125 CNX → DMK Jul 23, 05:40 UTCJul 23, 06:40 UTC1h 0m
2026-07-23 NOK124 DMK → CNX Jul 23, 03:55 UTCJul 23, 04:45 UTC50m
2026-07-23 NOK360 - Jul 23, 00:30 UTCJul 23, 02:50 UTC2h 20m
2026-07-22 NOK531 HKT → DMK Jul 22, 12:25 UTCJul 22, 15:30 UTC3h 5m
2026-07-22 NOK522 DMK → HKT Jul 22, 02:55 UTCJul 22, 10:25 UTC7h 30m
2026-07-21 NOK605 - Jul 21, 12:45 UTCJul 21, 13:20 UTC35m
2026-07-21 NOK604 - Jul 21, 11:10 UTCJul 21, 11:40 UTC30m
2026-07-21 NOK307 UTH → DMK Jul 21, 08:00 UTCJul 21, 10:20 UTC2h 20m
2026-07-21 NOK573 URT → DMK Jul 21, 04:35 UTCJul 21, 05:20 UTC45m
2026-07-21 NOK572 DMK → URT Jul 21, 02:55 UTCJul 21, 03:35 UTC40m
2026-07-20 NOK135 CNX → DMK Jul 20, 12:35 UTCJul 20, 13:25 UTC50m
2026-07-20 NOK134 - Jul 20, 10:40 UTCJul 20, 11:35 UTC55m
2026-07-20 NOK575 - Jul 20, 08:50 UTCJul 20, 09:30 UTC40m
2026-07-20 NOK574 - Jul 20, 06:45 UTCJul 20, 07:30 UTC45m
2026-07-20 NOK173 - Jul 20, 04:55 UTCJul 20, 05:40 UTC45m
2026-07-20 NOK172 - Jul 20, 03:00 UTCJul 20, 03:45 UTC45m
2026-07-19 NOK605 - Jul 19, 13:00 UTCJul 19, 13:20 UTC20m
2026-07-19 NOK604 - Jul 19, 11:15 UTCJul 19, 11:45 UTC30m
2026-07-19 NOK197 - Jul 19, 09:40 UTCJul 19, 10:20 UTC40m
2026-07-19 NOK196 - Jul 19, 07:50 UTCJul 19, 08:25 UTC35m
2026-07-19 NOK173 - Jul 19, 05:25 UTCJul 19, 06:05 UTC40m
2026-07-19 NOK172 - Jul 19, 03:30 UTCJul 19, 04:10 UTC40m
2026-07-19 05 - Jul 19, 00:10 UTCJul 19, 00:30 UTC20m
2026-07-18 NOK135 CNX → DMK Jul 18, 12:20 UTCJul 18, 13:15 UTC55m
2026-07-18 NOK134 - Jul 18, 10:35 UTCJul 18, 11:25 UTC50m
2026-07-18 NOK364 - Jul 18, 06:40 UTCJul 18, 07:00 UTC20m
2026-07-18 NOK573 - Jul 18, 04:10 UTCJul 18, 04:55 UTC45m
2026-07-18 NOK572 - Jul 18, 02:29 UTCJul 18, 03:10 UTC41m
2026-07-17 NOK556 - Jul 17, 10:40 UTCJul 17, 13:29 UTC2h 50m
2026-07-17 NOK575 - Jul 17, 08:45 UTCJul 17, 09:40 UTC55m
2026-07-17 NOK574 - Jul 17, 06:50 UTCJul 17, 07:35 UTC45m
2026-07-17 NOK322 - Jul 17, 02:54 UTCJul 17, 03:10 UTC15m
2026-07-16 NOK528 - Jul 16, 10:45 UTCJul 16, 13:45 UTC3h 0m
2026-07-16 NOK524 - Jul 16, 06:40 UTCJul 16, 09:50 UTC3h 10m
2026-07-16 NOK502 - Jul 16, 02:30 UTCJul 16, 05:45 UTC3h 15m
2026-07-15 NOK522 - Jul 15, 02:50 UTCJul 15, 03:30 UTC40m
2026-07-14 NOK308 - Jul 14, 10:30 UTCJul 14, 10:40 UTC10m
2026-07-14 NOK592 - Jul 14, 06:05 UTCJul 14, 09:15 UTC3h 10m
2026-07-14 NOK572 - Jul 14, 02:30 UTCJul 14, 05:10 UTC2h 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 HS-DBQ page for operator, model, and routing details .

Mode-S 881051 frequently asked

What is Mode-S code 881051?
881051 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-DBQ.
Where is Mode-S 881051 registered?
Mode-S code 881051 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 881051 broadcasting right now?
Yes. Mode-S 881051 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 881051, octal 42010121, decimal 8,917,073.
What flights does 881051 operate?
Mode-S 881051 has broadcast 20 distinct callsigns, including NOK172, NOK196, NOK572, NOK173, NOK605.