Apparatus

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sensors Mode-S transponder

0C203B

ICAO 24-bit transponder address · allocated to Suriname

Currently assigned to HP-1535CMP · BOEING 737-800

Hex
0C203B
Octal
03020073
Decimal
794,683
Country
SR
Tail
HP-1535CMP
Type
B738
Broadcasting now · callsign RPB7281 · 12,700 ft
Flights observed
340
Distinct callsigns
20
Country
SR
Last broadcast
Jul 26, 22:45 UTC

Current position

0C203B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 0C203B 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
RPB7026 - 20 2026-07-24
RPB7027 - 12 2026-07-16
RPB7229 AeroRepublica 9 2026-07-14
RPB7257 AeroRepublica 8 2026-07-25
RPB7245 - 7 2026-07-14
RPB7244 - 7 2026-07-14
RPB7216 - 7 2026-07-12
RPB7212 - 7 2026-06-26
RPB7280 AeroRepublica 6 2026-07-19
RPB7256 - 6 2026-07-14
RPB7206 AeroRepublica 6 2026-07-07
RPB7068 AeroRepublica 6 2026-07-10
RPB7511 AeroRepublica 5 2026-07-24
RPB7510 AeroRepublica 5 2026-07-21
RPB7299 AeroRepublica 5 2026-07-17
RPB7281 - 5 2026-07-20
RPB7272 AeroRepublica 5 2026-07-24
RPB7213 AeroRepublica 5 2026-06-26
RPB7298 AeroRepublica 4 2026-06-04
RPB7287 AeroRepublica 4 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPB7284 BOG → SMR Jul 26, 22:35 UTCJul 26, 22:45 UTC10m
2026-07-26 RPB7003 AUA → BOG Jul 26, 20:35 UTCJul 26, 20:55 UTC20m
2026-07-26 RPB7003 AUA → BOG Jul 26, 19:35 UTCJul 26, 19:45 UTC10m
2026-07-26 RPB7474 - Jul 26, 16:55 UTCJul 26, 17:40 UTC45m
2026-07-26 RPB7475 - Jul 26, 14:45 UTCJul 26, 15:40 UTC55m
2026-07-26 RPB7002 BOG → AUA Jul 26, 12:55 UTCJul 26, 13:05 UTC10m
2026-07-26 RPB7002 BOG → AUA Jul 26, 11:40 UTCJul 26, 11:50 UTC10m
2026-07-25 RPB7073 BLB → BOG Jul 25, 12:00 UTCJul 25, 22:35 UTC10h 35m
2026-07-25 RPB7635 CTG → BOG Jul 25, 06:10 UTCJul 25, 07:00 UTC50m
2026-07-25 RPB7634 BOG → CTG Jul 25, 04:10 UTCJul 25, 05:10 UTC1h 0m
2026-07-25 RPB7257 CLO → BOG Jul 25, 01:25 UTCJul 25, 01:45 UTC20m
2026-07-24 RPB1535 MDE → BLB Jul 24, 23:25 UTCJul 24, 23:40 UTC15m
2026-07-24 RPB7272 BOG → MDE Jul 24, 22:15 UTCJul 24, 22:30 UTC15m
2026-07-24 RPB7026 BOG → BOG Jul 24, 14:50 UTCJul 24, 20:45 UTC5h 55m
2026-07-24 RPB7243 AXM → BOG Jul 24, 12:40 UTCJul 24, 13:10 UTC30m
2026-07-24 RPB7242 BOG → AXM Jul 24, 11:15 UTCJul 24, 11:45 UTC30m
2026-07-24 RPB7511 CLO → BOG Jul 24, 09:15 UTCJul 24, 09:30 UTC15m
2026-07-23 RPB7096 - Jul 23, 20:35 UTCJul 24, 04:40 UTC8h 5m
2026-07-22 RPB7012 BOG → HAV Jul 22, 10:20 UTCJul 22, 17:15 UTC6h 55m
2026-07-21 RPB7457 - Jul 21, 16:55 UTCJul 21, 18:20 UTC1h 25m
2026-07-21 RPB7456 - Jul 21, 15:00 UTCJul 21, 15:10 UTC10m
2026-07-21 RPB7456 - Jul 21, 13:45 UTCJul 21, 14:00 UTC15m
2026-07-21 RPB7250 BOG → CLO Jul 21, 11:15 UTCJul 21, 11:25 UTC10m
2026-07-21 RPB7511 CLO → BOG Jul 21, 08:50 UTCJul 21, 09:10 UTC20m
2026-07-21 RPB7510 BOG → CLO Jul 21, 06:55 UTCJul 21, 07:10 UTC15m
2026-07-21 RPB7287 SMR → BOG Jul 21, 03:40 UTCJul 21, 04:40 UTC1h 0m
2026-07-21 RPB7286 BOG → SMR Jul 21, 01:20 UTCJul 21, 02:20 UTC1h 0m
2026-07-20 RPB7283 SMR → BOG Jul 20, 22:20 UTCJul 20, 23:20 UTC1h 0m
2026-07-20 RPB7282 BOG → SMR Jul 20, 19:35 UTCJul 20, 20:35 UTC1h 0m
2026-07-20 RPB7265 BGA → BOG Jul 20, 18:00 UTCJul 20, 18:15 UTC15m
2026-07-20 RPB7264 BOG → BGA Jul 20, 11:55 UTCJul 20, 12:05 UTC10m
2026-07-20 RPB7281 - Jul 20, 03:35 UTCJul 20, 04:35 UTC1h 0m
2026-07-20 RPB7632 MDE → SMR Jul 20, 01:35 UTCJul 20, 02:25 UTC50m
2026-07-19 RPB7633 - Jul 19, 23:30 UTCJul 20, 00:05 UTC35m
2026-07-19 RPB7280 BOG → SMR Jul 19, 21:15 UTCJul 19, 22:10 UTC55m
2026-07-19 RPB7651 CLO → BOG Jul 19, 19:20 UTCJul 19, 19:35 UTC15m
2026-07-19 RPB7650 BOG → CLO Jul 19, 17:30 UTCJul 19, 17:40 UTC10m
2026-07-19 RPB7217 CTG → BOG Jul 19, 14:40 UTCJul 19, 15:40 UTC1h 0m
2026-07-19 RPB7228 BOG → CTG Jul 19, 12:20 UTCJul 19, 13:25 UTC1h 5m
2026-07-19 RPB7249 - Jul 19, 02:30 UTCJul 19, 03:35 UTC1h 5m
2026-07-19 RPB7248 BOG → BAQ Jul 19, 00:15 UTCJul 19, 01:20 UTC1h 5m
2026-07-18 RPB7261 - Jul 18, 22:40 UTCJul 18, 22:55 UTC15m
2026-07-18 RPB7260 - Jul 18, 20:35 UTCJul 18, 20:50 UTC15m
2026-07-18 RPB7013 - Jul 18, 10:10 UTCJul 18, 18:30 UTC8h 20m
2026-07-18 RPB7287 - Jul 18, 01:50 UTCJul 18, 02:19 UTC30m
2026-07-17 RPB7286 - Jul 17, 23:39 UTCJul 18, 00:35 UTC55m
2026-07-17 RPB7281 - Jul 17, 22:10 UTCJul 17, 22:20 UTC10m
2026-07-17 RPB7280 BOG → SMR Jul 17, 19:15 UTCJul 17, 19:25 UTC10m
2026-07-17 RPB7299 MDE → BOG Jul 17, 17:40 UTCJul 17, 18:00 UTC20m
2026-07-17 RPB7270 BOG → MDE Jul 17, 12:30 UTCJul 17, 12:40 UTC10m

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-1535CMP page for operator, model, and routing details .

Mode-S 0C203B frequently asked

What is Mode-S code 0C203B?
0C203B is an ICAO 24-bit transponder address. Allocated to Suriname. Assigned to HP-1535CMP.
Where is Mode-S 0C203B registered?
Mode-S code 0C203B is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C203B broadcasting right now?
Yes. Mode-S 0C203B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C203B, octal 03020073, decimal 794,683.
What flights does 0C203B operate?
Mode-S 0C203B has broadcast 20 distinct callsigns, including RPB7026, RPB7027, RPB7229, RPB7257, RPB7245.