sensors Mode-S transponder
0C21B5
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9807CMP · BOEING 737 MAX 8
- Hex
- 0C21B5
- Octal
- 03020665
- Decimal
- 795,061
- Country
- SR
- Tail
- HP-9807CMP
- Type
- B38M
- Flights observed
- 117
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21B5 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 |
|---|---|---|---|
| CMP821 | Copa Airlines | 16 | 2026-05-28 |
| CMP709 | Copa Airlines | 6 | 2026-05-28 |
| CMP708 | Copa Airlines | 5 | 2026-04-23 |
| CMP423 | Copa Airlines | 4 | 2026-05-26 |
| CMP316 | Copa Airlines | 4 | 2026-05-22 |
| CMP235 | Copa Airlines | 4 | 2026-05-20 |
| CMP805 | Copa Airlines | 3 | 2026-05-05 |
| CMP765 | Copa Airlines | 3 | 2026-05-17 |
| CMP760 | Copa Airlines | 3 | 2026-05-24 |
| CMP753 | Copa Airlines | 3 | 2026-05-22 |
| CMP732 | Copa Airlines | 3 | 2026-05-11 |
| CMP422 | Copa Airlines | 3 | 2026-04-18 |
| CMP868 | Copa Airlines | 2 | 2026-05-09 |
| CMP716 | Copa Airlines | 2 | 2026-04-16 |
| CMP715 | - | 2 | 2026-04-16 |
| CMP484 | Copa Airlines | 2 | 2026-04-18 |
| CMP451 | Copa Airlines | 2 | 2026-05-08 |
| CMP424 | Copa Airlines | 2 | 2026-05-27 |
| CMP421 | Copa Airlines | 2 | 2026-05-12 |
| CMP420 | Copa Airlines | 2 | 2026-05-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CMP474 | PTY → SCL | May 29, 20:25 UTC | May 30, 03:45 UTC | 7h 20m |
| 2026-05-29 | CMP189 | SJU → PTY | May 29, 19:25 UTC | May 29, 19:35 UTC | 10m |
| 2026-05-29 | CMP187 | PTY → SJU | May 29, 16:15 UTC | May 29, 16:25 UTC | 10m |
| 2026-05-28 | CMP821 | PTY → POA | May 28, 21:35 UTC | May 29, 15:25 UTC | 17h 50m |
| 2026-05-28 | CMP821 | PTY → POA | May 28, 16:25 UTC | May 29, 09:35 UTC | 17h 10m |
| 2026-05-28 | CMP821 | PTY → POA | May 28, 13:55 UTC | May 29, 09:35 UTC | 19h 40m |
| 2026-05-28 | CMP821 | PTY → POA | May 28, 04:05 UTC | May 29, 02:15 UTC | 22h 10m |
| 2026-05-28 | CMP709 | BWI → PTY | May 28, 01:20 UTC | May 28, 23:15 UTC | 21h 55m |
| 2026-05-28 | CMP709 | BWI → PTY | May 28, 00:20 UTC | May 28, 23:15 UTC | 22h 55m |
| 2026-05-27 | CMP424 | FLN → PTY | May 27, 04:55 UTC | May 27, 19:05 UTC | 14h 11m |
| 2026-05-26 | CMP423 | YUL → PTY | May 26, 17:20 UTC | May 27, 03:29 UTC | 10h 10m |
| 2026-05-25 | CMP132 | LIM → PTY | May 25, 22:10 UTC | May 26, 10:10 UTC | 12h 0m |
| 2026-05-25 | CMP131 | PTY → LIM | May 25, 12:45 UTC | May 25, 19:59 UTC | 7h 14m |
| 2026-05-24 | CMP760 | LIM → PTY | May 24, 18:55 UTC | May 25, 02:40 UTC | 7h 45m |
| 2026-05-23 | CMP821 | PTY → POA | May 23, 21:50 UTC | May 24, 16:55 UTC | 19h 5m |
| 2026-05-23 | CMP821 | PTY → POA | May 23, 17:20 UTC | May 24, 16:55 UTC | 23h 35m |
| 2026-05-22 | CMP753 | SSA → PTY | May 22, 22:05 UTC | May 23, 15:25 UTC | 17h 19m |
| 2026-05-22 | CMP753 | SSA → PTY | May 22, 17:20 UTC | May 23, 15:25 UTC | 22h 4m |
| 2026-05-22 | CMP753 | SSA → PTY | May 22, 17:05 UTC | May 23, 15:15 UTC | 22h 9m |
| 2026-05-22 | CMP316 | PTY → CUN | May 22, 06:45 UTC | May 22, 15:30 UTC | 8h 45m |
| 2026-05-22 | CMP423 | YUL → PTY | May 22, 03:05 UTC | May 22, 03:15 UTC | 10m |
| 2026-05-21 | CMP423 | YUL → PTY | May 21, 17:10 UTC | May 22, 01:30 UTC | 8h 20m |
| 2026-05-20 | CMP821 | PTY → POA | May 20, 21:35 UTC | May 21, 15:20 UTC | 17h 45m |
| 2026-05-20 | CMP821 | PTY → POA | May 20, 15:20 UTC | May 21, 15:15 UTC | 23h 55m |
| 2026-05-20 | CMP236 | ORD → PTY | May 20, 13:20 UTC | May 21, 09:30 UTC | 20h 10m |
| 2026-05-20 | CMP235 | PTY → ORD | May 20, 01:15 UTC | May 20, 05:45 UTC | 4h 31m |
| 2026-05-19 | CMP235 | PTY → ORD | May 19, 09:20 UTC | May 20, 05:45 UTC | 20h 26m |
| 2026-05-19 | CMP235 | PTY → ORD | May 19, 08:45 UTC | May 20, 05:45 UTC | 21h 1m |
| 2026-05-19 | CMP235 | PTY → ORD | May 19, 05:20 UTC | May 20, 05:15 UTC | 23h 56m |
| 2026-05-19 | CMP820 | POA → PTY | May 19, 01:20 UTC | May 20, 01:15 UTC | 23h 55m |
| 2026-05-18 | CMP821 | PTY → POA | May 18, 21:25 UTC | May 19, 09:30 UTC | 12h 5m |
| 2026-05-18 | CMP821 | PTY → POA | May 18, 14:20 UTC | May 19, 09:30 UTC | 19h 9m |
| 2026-05-18 | CMP821 | PTY → POA | May 18, 09:55 UTC | May 19, 09:15 UTC | 23h 19m |
| 2026-05-18 | CMP821 | PTY → POA | May 18, 06:20 UTC | May 19, 02:00 UTC | 19h 39m |
| 2026-05-18 | CMP734 | CNF → PTY | May 18, 01:20 UTC | May 18, 23:00 UTC | 21h 39m |
| 2026-05-17 | CMP765 | PTY → CNF | May 17, 22:05 UTC | May 18, 14:20 UTC | 16h 15m |
| 2026-05-17 | CMP765 | PTY → CNF | May 17, 17:20 UTC | May 18, 14:20 UTC | 21h 0m |
| 2026-05-17 | CMP765 | PTY → CNF | May 17, 17:01 UTC | May 18, 14:20 UTC | 21h 20m |
| 2026-05-17 | CMP316 | PTY → CUN | May 17, 13:55 UTC | May 17, 15:40 UTC | 1h 45m |
| 2026-05-16 | CMP316 | PTY → CUN | May 16, 19:20 UTC | May 17, 15:40 UTC | 20h 20m |
| 2026-05-16 | CMP316 | PTY → CUN | May 16, 18:55 UTC | May 17, 15:40 UTC | 20h 45m |
| 2026-05-15 | CMP821 | PTY → POA | May 15, 22:15 UTC | May 16, 16:55 UTC | 18h 41m |
| 2026-05-15 | CMP821 | PTY → POA | May 15, 07:50 UTC | May 16, 06:41 UTC | 22h 50m |
| 2026-05-14 | CMP337 | PTY → LIM | May 14, 22:35 UTC | May 15, 05:30 UTC | 6h 55m |
| 2026-05-14 | CMP380 | GUA → MGA | May 14, 08:00 UTC | May 14, 14:45 UTC | 6h 45m |
| 2026-05-13 | CMP705 | BOS → PTY | May 13, 20:15 UTC | May 14, 05:35 UTC | 9h 20m |
| 2026-05-13 | CMP704 | PTY → BOS | May 13, 08:05 UTC | May 13, 18:20 UTC | 10h 15m |
| 2026-05-12 | CMP263 | PTY → LIM | May 12, 14:25 UTC | May 13, 06:05 UTC | 15h 40m |
| 2026-05-12 | CMP421 | MDZ → PTY | May 12, 08:20 UTC | May 13, 06:05 UTC | 21h 45m |
| 2026-05-11 | CMP421 | MDZ → PTY | May 11, 16:40 UTC | May 12, 14:30 UTC | 21h 51m |
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-9807CMP page for operator, model, and routing details .