sensors Mode-S transponder
C2B3F5
ICAO 24-bit transponder address · allocated to Canada
Currently assigned to 177704 · Boeing CC-177 Globemaster III
- Hex
- C2B3F5
- Octal
- 60531765
- Decimal
- 12,760,053
- Country
- CA
- Tail
- 177704
- Type
- C17
- Flights observed
- 66
- Distinct callsigns
- 17
- Country
- CA
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address C2B3F5 falls within the block assigned to Canada (CA) by ICAO Annex 10, Volume III. Every aircraft registered in Canada 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CFC3670 | - | 10 | 2026-06-12 |
| CFC4042 | - | 9 | 2026-05-27 |
| CFC4045 | - | 6 | 2026-06-03 |
| CFC3681 | - | 6 | 2026-07-03 |
| CFC4066 | - | 5 | 2026-07-22 |
| BISN10 | - | 5 | 2026-07-15 |
| BISN5 | - | 4 | 2026-07-16 |
| BISN19 | - | 4 | 2026-07-24 |
| CFC3677 | - | 3 | 2026-06-25 |
| BISN17 | - | 3 | 2026-07-16 |
| BISN4 | - | 2 | 2026-05-19 |
| BISN20 | - | 2 | 2026-06-18 |
| BISN16 | - | 2 | 2026-06-04 |
| BISN14 | - | 2 | 2026-06-16 |
| CFC3668 | - | 1 | 2026-05-15 |
| BISN15 | - | 1 | 2026-07-23 |
| BISN12 | - | 1 | 2026-06-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | BISN19 | - | Jul 24, 02:20 UTC | Jul 24, 02:50 UTC | 30m |
| 2026-07-24 | BISN19 | - | Jul 24, 01:10 UTC | Jul 24, 01:45 UTC | 35m |
| 2026-07-23 | BISN15 | - | Jul 23, 18:50 UTC | Jul 23, 22:35 UTC | 3h 45m |
| 2026-07-22 | CFC4066 | - | Jul 22, 12:05 UTC | Jul 22, 19:10 UTC | 7h 5m |
| 2026-07-21 | CFC4066 | RZE → PIK | Jul 21, 14:40 UTC | Jul 21, 17:20 UTC | 2h 40m |
| 2026-07-21 | CFC4066 | - | Jul 21, 11:20 UTC | Jul 21, 11:30 UTC | 10m |
| 2026-07-20 | CFC4066 | - | Jul 20, 12:45 UTC | Jul 20, 14:55 UTC | 2h 10m |
| 2026-07-18 | CFC4066 | - | Jul 18, 14:45 UTC | Jul 18, 20:55 UTC | 6h 10m |
| 2026-07-17 | BISN19 | - | Jul 17, 00:04 UTC | Jul 17, 03:55 UTC | 3h 50m |
| 2026-07-16 | BISN5 | - | Jul 16, 21:55 UTC | Jul 16, 22:25 UTC | 30m |
| 2026-07-16 | BISN5 | - | Jul 16, 19:05 UTC | Jul 16, 21:25 UTC | 2h 20m |
| 2026-07-16 | BISN17 | - | Jul 16, 16:35 UTC | Jul 16, 18:00 UTC | 1h 25m |
| 2026-07-16 | BISN17 | - | Jul 16, 14:20 UTC | Jul 16, 15:25 UTC | 1h 5m |
| 2026-07-15 | BISN10 | - | Jul 15, 23:45 UTC | Jul 16, 00:35 UTC | 50m |
| 2026-07-15 | BISN10 | - | Jul 15, 22:50 UTC | Jul 15, 23:40 UTC | 50m |
| 2026-07-15 | BISN10 | - | Jul 15, 21:00 UTC | Jul 15, 22:05 UTC | 1h 5m |
| 2026-07-03 | CFC3681 | - | Jul 3, 10:45 UTC | Jul 3, 20:35 UTC | 9h 50m |
| 2026-07-02 | CFC3681 | - | Jul 2, 13:45 UTC | Jul 2, 15:25 UTC | 1h 40m |
| 2026-07-02 | CFC3681 | - | Jul 2, 11:15 UTC | Jul 2, 12:55 UTC | 1h 40m |
| 2026-06-30 | CFC3681 | - | Jun 30, 12:50 UTC | Jun 30, 14:30 UTC | 1h 40m |
| 2026-06-30 | CFC3681 | - | Jun 30, 10:55 UTC | Jun 30, 11:40 UTC | 45m |
| 2026-06-28 | CFC3681 | - | Jun 28, 14:04 UTC | Jun 28, 21:34 UTC | 7h 30m |
| 2026-06-25 | CFC3677 | - | Jun 25, 18:34 UTC | Jun 26, 04:14 UTC | 9h 40m |
| 2026-06-24 | CFC3677 | - | Jun 24, 18:29 UTC | Jun 24, 21:40 UTC | 3h 10m |
| 2026-06-24 | CFC3677 | - | Jun 24, 14:00 UTC | Jun 24, 16:19 UTC | 2h 20m |
| 2026-06-20 | BISN19 | - | Jun 20, 17:14 UTC | Jun 20, 19:04 UTC | 1h 50m |
| 2026-06-19 | BISN17 | - | Jun 19, 00:05 UTC | Jun 19, 01:29 UTC | 1h 24m |
| 2026-06-18 | BISN20 | - | Jun 18, 19:40 UTC | Jun 18, 20:50 UTC | 1h 10m |
| 2026-06-18 | BISN20 | - | Jun 18, 18:40 UTC | Jun 18, 19:05 UTC | 25m |
| 2026-06-16 | BISN10 | YTR → YTR | Jun 16, 23:20 UTC | Jun 17, 02:15 UTC | 2h 55m |
| 2026-06-16 | BISN5 | - | Jun 16, 19:50 UTC | Jun 16, 21:50 UTC | 2h 0m |
| 2026-06-16 | BISN5 | - | Jun 16, 18:29 UTC | Jun 16, 18:55 UTC | 25m |
| 2026-06-16 | BISN14 | - | Jun 16, 17:00 UTC | Jun 16, 17:19 UTC | 20m |
| 2026-06-16 | BISN14 | - | Jun 16, 14:39 UTC | Jun 16, 16:25 UTC | 1h 45m |
| 2026-06-12 | CFC3670 | - | Jun 12, 21:40 UTC | Jun 12, 23:15 UTC | 1h 35m |
| 2026-06-12 | CFC3670 | - | Jun 12, 16:10 UTC | Jun 12, 20:25 UTC | 4h 15m |
| 2026-06-11 | CFC3670 | - | Jun 11, 15:20 UTC | Jun 11, 20:15 UTC | 4h 55m |
| 2026-06-10 | CFC3670 | - | Jun 10, 14:35 UTC | Jun 10, 19:45 UTC | 5h 10m |
| 2026-06-10 | CFC3670 | - | Jun 10, 11:35 UTC | Jun 10, 13:00 UTC | 1h 25m |
| 2026-06-09 | CFC3670 | OSL → CGN | Jun 9, 13:40 UTC | Jun 9, 15:20 UTC | 1h 40m |
| 2026-06-09 | CFC3670 | - | Jun 9, 10:55 UTC | Jun 9, 12:35 UTC | 1h 40m |
| 2026-06-08 | CFC3670 | - | Jun 8, 13:45 UTC | Jun 8, 15:15 UTC | 1h 30m |
| 2026-06-08 | CFC3670 | MUC → BGO | Jun 8, 10:55 UTC | Jun 8, 12:55 UTC | 2h 0m |
| 2026-06-06 | CFC3670 | - | Jun 6, 11:25 UTC | Jun 6, 18:55 UTC | 7h 30m |
| 2026-06-05 | BISN12 | - | Jun 5, 01:55 UTC | Jun 5, 03:45 UTC | 1h 50m |
| 2026-06-04 | BISN16 | - | Jun 4, 22:35 UTC | Jun 5, 00:30 UTC | 1h 55m |
| 2026-06-04 | BISN16 | - | Jun 4, 21:55 UTC | Jun 4, 22:05 UTC | 10m |
| 2026-06-03 | CFC4045 | - | Jun 3, 16:35 UTC | Jun 3, 23:15 UTC | 6h 40m |
| 2026-06-02 | CFC4045 | RZE → BFS | Jun 2, 17:25 UTC | Jun 2, 20:15 UTC | 2h 50m |
| 2026-06-02 | CFC4045 | - | Jun 2, 12:55 UTC | Jun 2, 14:00 UTC | 1h 5m |
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 177704 page for operator, model, and routing details .