Apparatus

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sensors Mode-S transponder

0C21EE

ICAO 24-bit transponder address · allocated to Suriname

Currently assigned to HP-1990WWP · BOEING 737-800

Hex
0C21EE
Octal
03020756
Decimal
795,118
Country
SR
Tail
HP-1990WWP
Type
B738
No current signal · last broadcast 2h ago
Flights observed
146
Distinct callsigns
20
Country
SR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 0C21EE.

Country allocation

The ICAO 24-bit address 0C21EE falls within the block assigned to Suriname (SR) by ICAO Annex 10, Volume III. Every aircraft registered in Suriname 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
WWP918 - 21 2026-07-12
CMP8947 - 21 2026-07-11
WWP917 - 20 2026-07-12
CMP8901 - 10 2026-07-09
WWP902 - 8 2026-07-14
CMP8934 - 8 2026-07-11
CMP8900 - 8 2026-07-08
WWP940 - 7 2026-06-11
WWP916 - 7 2026-07-05
WWP915 - 6 2026-07-17
WWP903 - 6 2026-07-14
WWP914 - 4 2026-07-15
CMP8946 - 4 2026-04-21
CMP8933 - 3 2026-06-20
WWP937 - 2 2026-07-14
WW918 - 2 2026-04-22
CMP8940 Copa Airlines 2 2026-06-26
CMP8932 Copa Airlines 2 2026-07-15
WWP941 - 1 2026-04-16
WWP938 - 1 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 WWP915 - Jul 17, 10:30 UTCJul 17, 23:30 UTC13h 0m
2026-07-17 CMP8931 - Jul 17, 02:10 UTCJul 17, 07:50 UTC5h 40m
2026-07-15 CMP8932 VVI → LIM Jul 15, 23:10 UTCJul 16, 16:19 UTC17h 10m
2026-07-15 WWP913 - Jul 15, 16:30 UTCJul 15, 20:55 UTC4h 25m
2026-07-15 WWP914 - Jul 15, 13:45 UTCJul 15, 14:55 UTC1h 10m
2026-07-15 WWP914 - Jul 15, 06:50 UTCJul 15, 11:50 UTC5h 0m
2026-07-14 WWP937 - Jul 14, 22:35 UTCJul 15, 04:30 UTC5h 54m
2026-07-14 WWP903 - Jul 14, 12:25 UTCJul 14, 20:35 UTC8h 10m
2026-07-14 WWP902 - Jul 14, 07:45 UTCJul 14, 10:45 UTC3h 0m
2026-07-13 WWP902 - Jul 13, 14:15 UTCJul 14, 10:45 UTC20h 30m
2026-07-13 WWP902 - Jul 13, 09:45 UTCJul 14, 09:10 UTC23h 25m
2026-07-12 WWP917 - Jul 12, 16:20 UTCJul 13, 00:30 UTC8h 10m
2026-07-12 WWP918 - Jul 12, 10:30 UTCJul 12, 15:15 UTC4h 45m
2026-07-11 CMP8934 - Jul 11, 13:45 UTCJul 12, 08:55 UTC19h 10m
2026-07-11 CMP8947 GUA → SJO Jul 11, 02:00 UTCJul 11, 11:45 UTC9h 45m
2026-07-10 WWP918 - Jul 10, 10:15 UTCJul 11, 00:30 UTC14h 15m
2026-07-09 CMP8934 - Jul 9, 21:05 UTCJul 10, 07:05 UTC10h 0m
2026-07-09 CMP8901 - Jul 9, 04:30 UTCJul 9, 18:40 UTC14h 10m
2026-07-08 CMP8900 - Jul 8, 23:45 UTCJul 9, 02:35 UTC2h 50m
2026-07-07 CMP8947 - Jul 7, 11:20 UTCJul 7, 15:35 UTC4h 15m
2026-07-05 WWP916 - Jul 5, 19:20 UTCJul 5, 22:30 UTC3h 10m
2026-07-04 WWP917 - Jul 4, 03:55 UTCJul 4, 04:30 UTC35m
2026-07-04 WWP917 - Jul 4, 03:10 UTCJul 4, 03:35 UTC25m
2026-07-03 WWP918 - Jul 3, 16:40 UTCJul 4, 01:45 UTC9h 5m
2026-07-02 WWP916 - Jul 2, 21:50 UTCJul 3, 21:30 UTC23h 40m
2026-07-02 CMP8901 - Jul 2, 04:00 UTCJul 2, 19:30 UTC15h 30m
2026-07-01 WWP917 - Jul 1, 16:35 UTCJul 2, 01:45 UTC9h 10m
2026-07-01 WWP918 - Jul 1, 13:55 UTCJul 1, 15:10 UTC1h 15m
2026-06-30 WWP903 - Jun 30, 12:20 UTCJun 30, 14:50 UTC2h 30m
2026-06-30 WWP902 - Jun 30, 07:50 UTCJun 30, 10:35 UTC2h 45m
2026-06-28 WWP915 - Jun 28, 19:29 UTCJun 28, 22:59 UTC3h 30m
2026-06-26 CMP8947 - Jun 26, 21:15 UTCJun 27, 10:29 UTC13h 15m
2026-06-26 CMP8940 PTY → SDQ Jun 26, 18:49 UTCJun 26, 19:00 UTC10m
2026-06-25 CMP8940 PTY → SDQ Jun 25, 21:50 UTCJun 26, 19:00 UTC21h 10m
2026-06-25 CMP8901 MIA → PTY Jun 25, 04:04 UTCJun 25, 19:34 UTC15h 30m
2026-06-24 WWP917 - Jun 24, 17:50 UTCJun 24, 23:04 UTC5h 15m
2026-06-24 WWP918 - Jun 24, 15:24 UTCJun 24, 16:24 UTC1h 0m
2026-06-23 WWP903 - Jun 23, 12:35 UTCJun 23, 14:55 UTC2h 20m
2026-06-23 WWP902 - Jun 23, 08:39 UTCJun 23, 10:24 UTC1h 45m
2026-06-20 CMP8947 HAV → SJO Jun 20, 23:34 UTCJun 21, 19:20 UTC19h 45m
2026-06-20 CMP8947 HAV → SJO Jun 20, 23:19 UTCJun 21, 19:20 UTC20h 0m
2026-06-20 CMP8933 - Jun 20, 09:05 UTCJun 20, 21:44 UTC12h 40m
2026-06-18 CMP8901 MIA → PTY Jun 18, 05:05 UTCJun 18, 05:35 UTC30m
2026-06-18 CMP8900 PTY → MIA Jun 18, 02:50 UTCJun 18, 03:05 UTC15m
2026-06-18 CMP8900 PTY → MIA Jun 18, 00:25 UTCJun 18, 00:35 UTC10m
2026-06-13 WWP917 - Jun 13, 01:20 UTCJun 13, 01:40 UTC20m
2026-06-12 WWP918 - Jun 12, 23:30 UTCJun 13, 00:00 UTC30m
2026-06-11 WWP940 - Jun 11, 20:25 UTCJun 11, 20:40 UTC15m
2026-06-11 WWP940 - Jun 11, 01:15 UTCJun 11, 20:40 UTC19h 25m
2026-06-10 WWP917 - Jun 10, 16:40 UTCJun 10, 17:10 UTC30m

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 HP-1990WWP page for operator, model, and routing details .

Mode-S 0C21EE frequently asked

What is Mode-S code 0C21EE?
0C21EE is an ICAO 24-bit transponder address. Allocated to Suriname. Assigned to HP-1990WWP.
Where is Mode-S 0C21EE registered?
Mode-S code 0C21EE is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C21EE broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C21EE, octal 03020756, decimal 795,118.
What flights does 0C21EE operate?
Mode-S 0C21EE has broadcast 20 distinct callsigns, including WWP918, CMP8947, WWP917, CMP8901, WWP902.