sensors Mode-S transponder
8018C9
ICAO 24-bit transponder address · allocated to India
- Hex
- 8018C9
- Octal
- 40014311
- Decimal
- 8,394,953
- Country
- IN
- Flights observed
- 231
- Distinct callsigns
- 20
- Country
- IN
- Last broadcast
- 10h ago
Current position
Country allocation
The ICAO 24-bit address 8018C9 falls within the block assigned to India (IN) by ICAO Annex 10, Volume III. Every aircraft registered in India 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 |
|---|---|---|---|
| IGO6261 | IndiGo Airlines | 4 | 2026-06-04 |
| IGO2133 | IndiGo Airlines | 4 | 2026-06-19 |
| IGO907P | - | 3 | 2026-05-20 |
| IGO782C | - | 3 | 2026-06-20 |
| IGO751L | - | 3 | 2026-06-15 |
| IGO751 | IndiGo Airlines | 3 | 2026-05-29 |
| IGO6884 | IndiGo Airlines | 3 | 2026-06-07 |
| IGO672 | IndiGo Airlines | 3 | 2026-06-07 |
| IGO6469 | IndiGo Airlines | 3 | 2026-05-20 |
| IGO6414 | IndiGo Airlines | 3 | 2026-06-07 |
| IGO631J | - | 3 | 2026-06-07 |
| IGO6243 | IndiGo Airlines | 3 | 2026-05-31 |
| IGO561K | IndiGo Airlines | 3 | 2026-05-29 |
| IGO5072 | IndiGo Airlines | 3 | 2026-06-06 |
| IGO474V | - | 3 | 2026-05-20 |
| IGO42FP | IndiGo Airlines | 3 | 2026-06-18 |
| IGO2263 | IndiGo Airlines | 3 | 2026-05-29 |
| IGO2013 | IndiGo Airlines | 3 | 2026-05-29 |
| IGO954W | - | 2 | 2026-06-23 |
| IGO936J | - | 2 | 2026-06-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-25 | IGO6505 | - | Jun 25, 16:39 UTC | Jun 25, 16:50 UTC | 10m |
| 2026-06-25 | IGO604C | - | Jun 25, 13:29 UTC | Jun 25, 14:24 UTC | 55m |
| 2026-06-25 | IGO624M | - | Jun 25, 07:59 UTC | Jun 25, 11:54 UTC | 3h 55m |
| 2026-06-25 | IGO239V | - | Jun 25, 05:35 UTC | Jun 25, 07:00 UTC | 1h 25m |
| 2026-06-25 | IGO2165 | - | Jun 25, 01:35 UTC | Jun 25, 02:14 UTC | 40m |
| 2026-06-25 | IGO6190 | - | Jun 25, 00:09 UTC | Jun 25, 00:29 UTC | 20m |
| 2026-06-24 | IGO6631 | - | Jun 24, 18:15 UTC | Jun 24, 20:09 UTC | 1h 55m |
| 2026-06-24 | IGO217H | - | Jun 24, 15:29 UTC | Jun 24, 17:25 UTC | 1h 55m |
| 2026-06-24 | IGO253F | - | Jun 24, 12:25 UTC | Jun 24, 13:44 UTC | 1h 20m |
| 2026-06-24 | IGO2614 | - | Jun 24, 09:49 UTC | Jun 24, 10:59 UTC | 1h 10m |
| 2026-06-24 | IGO2241 | - | Jun 24, 07:54 UTC | Jun 24, 08:30 UTC | 35m |
| 2026-06-24 | IGO2317 | - | Jun 24, 06:04 UTC | Jun 24, 06:35 UTC | 30m |
| 2026-06-24 | IGO2165 | - | Jun 24, 01:30 UTC | Jun 24, 02:05 UTC | 35m |
| 2026-06-23 | IGO6190 | - | Jun 23, 23:59 UTC | Jun 24, 00:20 UTC | 20m |
| 2026-06-23 | IGO461L | - | Jun 23, 16:20 UTC | Jun 23, 21:05 UTC | 4h 45m |
| 2026-06-23 | IGO2237 | - | Jun 23, 13:45 UTC | Jun 23, 13:55 UTC | 10m |
| 2026-06-23 | IGO103Y | - | Jun 23, 11:59 UTC | Jun 23, 12:29 UTC | 30m |
| 2026-06-23 | IGO103Y | - | Jun 23, 10:55 UTC | Jun 23, 11:19 UTC | 25m |
| 2026-06-23 | IGO2016 | - | Jun 23, 08:54 UTC | Jun 23, 09:24 UTC | 30m |
| 2026-06-23 | IGO954W | - | Jun 23, 06:39 UTC | Jun 23, 06:59 UTC | 20m |
| 2026-06-23 | IGO954W | - | Jun 23, 05:15 UTC | Jun 23, 05:45 UTC | 30m |
| 2026-06-23 | IGO5303 | - | Jun 23, 00:30 UTC | Jun 23, 03:09 UTC | 2h 40m |
| 2026-06-22 | IGO5304 | - | Jun 22, 18:35 UTC | Jun 22, 19:09 UTC | 35m |
| 2026-06-22 | IGO246C | - | Jun 22, 15:59 UTC | Jun 22, 16:34 UTC | 35m |
| 2026-06-22 | IGO2096 | - | Jun 22, 12:54 UTC | Jun 22, 14:29 UTC | 1h 35m |
| 2026-06-22 | IGO6513 | - | Jun 22, 03:30 UTC | Jun 22, 12:05 UTC | 8h 35m |
| 2026-06-21 | IGO6494 | - | Jun 21, 14:34 UTC | Jun 22, 02:19 UTC | 11h 45m |
| 2026-06-20 | IGO67P | - | Jun 20, 19:40 UTC | Jun 21, 11:49 UTC | 16h 10m |
| 2026-06-20 | IGO6959 | - | Jun 20, 15:44 UTC | Jun 20, 16:09 UTC | 25m |
| 2026-06-20 | IGO6149 | - | Jun 20, 14:05 UTC | Jun 20, 14:50 UTC | 45m |
| 2026-06-20 | IGO6191 | PNQ → IDR | Jun 20, 08:44 UTC | Jun 20, 09:05 UTC | 20m |
| 2026-06-20 | IGO6192 | - | Jun 20, 07:09 UTC | Jun 20, 07:29 UTC | 20m |
| 2026-06-20 | IGO782C | - | Jun 20, 02:29 UTC | Jun 20, 02:40 UTC | 10m |
| 2026-06-20 | IGO782C | - | Jun 20, 01:34 UTC | Jun 20, 01:44 UTC | 10m |
| 2026-06-19 | IGO2133 | GOX → BOM | Jun 19, 16:55 UTC | Jun 19, 17:09 UTC | 15m |
| 2026-06-19 | IGO2133 | GOX → BOM | Jun 19, 16:04 UTC | Jun 19, 16:14 UTC | 10m |
| 2026-06-19 | IGO148C | - | Jun 19, 12:59 UTC | Jun 19, 13:09 UTC | 10m |
| 2026-06-18 | IGO48FC | - | Jun 18, 16:25 UTC | Jun 18, 16:50 UTC | 25m |
| 2026-06-18 | IGO42FP | MAA → CJB | Jun 18, 14:50 UTC | Jun 18, 15:10 UTC | 20m |
| 2026-06-17 | IGO6374 | - | Jun 17, 16:25 UTC | Jun 18, 10:00 UTC | 17h 35m |
| 2026-06-17 | IGO42FP | MAA → CJB | Jun 17, 14:55 UTC | Jun 17, 15:05 UTC | 10m |
| 2026-06-17 | IGO735L | - | Jun 17, 11:35 UTC | Jun 17, 12:45 UTC | 1h 10m |
| 2026-06-17 | IGO6044 | - | Jun 17, 05:50 UTC | Jun 17, 09:30 UTC | 3h 40m |
| 2026-06-17 | IGO692M | - | Jun 17, 00:45 UTC | Jun 17, 04:40 UTC | 3h 55m |
| 2026-06-16 | IGO679P | - | Jun 16, 22:00 UTC | Jun 16, 22:15 UTC | 15m |
| 2026-06-16 | IGO48FC | - | Jun 16, 16:30 UTC | Jun 16, 16:50 UTC | 20m |
| 2026-06-16 | IGO42FP | MAA → CJB | Jun 16, 15:20 UTC | Jun 16, 15:30 UTC | 10m |
| 2026-06-15 | IGO751L | - | Jun 15, 14:40 UTC | Jun 16, 10:00 UTC | 19h 20m |
| 2026-06-15 | IGO751L | - | Jun 15, 12:19 UTC | Jun 16, 10:00 UTC | 21h 40m |
| 2026-06-15 | IGO694 | - | Jun 15, 09:10 UTC | Jun 15, 09:20 UTC | 10m |
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.