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sensors Mode-S transponder

800B81

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-SLB · BOEING 737-700

Hex
800B81
Octal
40005601
Decimal
8,391,553
Country
IN
Tail
VT-SLB
Type
B737
No current signal · last broadcast 1h ago
Flights observed
461
Distinct callsigns
20
Country
IN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 800B81.

Country allocation

The ICAO 24-bit address 800B81 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
SEJ126 - 44 2026-07-13
SEJ122 - 36 2026-07-14
SEJ128 - 33 2026-07-12
SEJ124 - 31 2026-07-13
SEJ496 - 24 2026-06-29
SEJ495 - 23 2026-06-29
SEJ106 - 20 2026-06-23
SEJ472 Spicejet 19 2026-06-17
SEJ478 Spicejet 18 2026-05-31
SEJ471 Spicejet 17 2026-06-17
SEJ162 Spicejet 17 2026-06-24
SEJ473 Spicejet 16 2026-05-31
SEJ105 Spicejet 16 2026-06-22
SEJ164 - 13 2026-06-24
SEJ127 - 13 2026-07-10
SEJ802 Spicejet 9 2026-07-13
SEJ123 - 9 2026-07-14
SEJ800 - 8 2026-07-09
SEJ125 - 8 2026-07-02
SEJ803 - 6 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SEJ123 - Jul 14, 06:00 UTCJul 14, 06:15 UTC15m
2026-07-14 SEJ122 - Jul 14, 01:40 UTCJul 14, 05:00 UTC3h 20m
2026-07-13 SEJ803 - Jul 13, 18:35 UTCJul 13, 20:20 UTC1h 45m
2026-07-13 SEJ802 IXB → MAA Jul 13, 15:00 UTCJul 13, 16:00 UTC1h 0m
2026-07-13 SEJ124 - Jul 13, 11:00 UTCJul 13, 11:25 UTC25m
2026-07-13 SEJ123 - Jul 13, 08:50 UTCJul 13, 09:10 UTC20m
2026-07-13 SEJ126 - Jul 13, 03:30 UTCJul 13, 06:20 UTC2h 50m
2026-07-12 SEJ128 DEL → DEL Jul 12, 23:50 UTCJul 13, 02:35 UTC2h 45m
2026-07-12 SEJ980 - Jul 12, 07:50 UTCJul 12, 11:10 UTC3h 20m
2026-07-12 SEJ126 - Jul 12, 03:45 UTCJul 12, 06:40 UTC2h 55m
2026-07-12 SEJ128 - Jul 12, 01:45 UTCJul 12, 02:30 UTC45m
2026-07-11 SEJ803 - Jul 11, 19:40 UTCJul 11, 21:15 UTC1h 35m
2026-07-11 SEJ802 IXB → MAA Jul 11, 18:05 UTCJul 11, 18:20 UTC15m
2026-07-11 SEJ802 IXB → MAA Jul 11, 16:40 UTCJul 11, 17:10 UTC30m
2026-07-11 SEJ823 - Jul 11, 08:10 UTCJul 11, 11:05 UTC2h 55m
2026-07-11 SEJ126 - Jul 11, 03:25 UTCJul 11, 06:25 UTC3h 0m
2026-07-10 SEJ127 - Jul 10, 23:30 UTCJul 11, 02:20 UTC2h 50m
2026-07-10 SEJ803 - Jul 10, 17:35 UTCJul 10, 19:20 UTC1h 45m
2026-07-10 SEJ802 IXB → MAA Jul 10, 14:05 UTCJul 10, 15:40 UTC1h 35m
2026-07-10 SEJ981 DEL → DEL Jul 10, 08:50 UTCJul 10, 12:50 UTC4h 0m
2026-07-10 SEJ126 - Jul 10, 04:05 UTCJul 10, 07:35 UTC3h 30m
2026-07-09 SEJ128 - Jul 9, 23:45 UTCJul 10, 02:50 UTC3h 5m
2026-07-09 SEJ801 - Jul 9, 19:30 UTCJul 9, 21:10 UTC1h 40m
2026-07-09 SEJ800 - Jul 9, 18:00 UTCJul 9, 18:10 UTC10m
2026-07-09 SEJ800 - Jul 9, 16:35 UTCJul 9, 17:10 UTC35m
2026-07-09 SEJ823 - Jul 9, 08:55 UTCJul 9, 12:35 UTC3h 40m
2026-07-09 SEJ126 - Jul 9, 03:45 UTCJul 9, 07:30 UTC3h 45m
2026-07-09 SEJ128 - Jul 9, 02:10 UTCJul 9, 02:40 UTC30m
2026-07-08 SEJ127 - Jul 8, 23:50 UTCJul 9, 00:10 UTC20m
2026-07-08 SEJ803 - Jul 8, 17:50 UTCJul 8, 19:30 UTC1h 40m
2026-07-08 SEJ802 IXB → MAA Jul 8, 16:05 UTCJul 8, 16:15 UTC10m
2026-07-08 SEJ802 IXB → MAA Jul 8, 14:35 UTCJul 8, 15:10 UTC35m
2026-07-08 SEJ823 DEL → DEL Jul 8, 09:15 UTCJul 8, 12:25 UTC3h 10m
2026-07-08 SEJ126 DEL → DEL Jul 8, 03:50 UTCJul 8, 07:20 UTC3h 30m
2026-07-07 SEJ127 DEL → DEL Jul 7, 23:35 UTCJul 8, 02:20 UTC2h 45m
2026-07-07 SEJ906 CCU → DEL Jul 7, 18:45 UTCJul 7, 20:40 UTC1h 55m
2026-07-07 SEJ905 DEL → CCU Jul 7, 15:50 UTCJul 7, 17:40 UTC1h 50m
2026-07-07 SEJ601 - Jul 7, 12:55 UTCJul 7, 14:35 UTC1h 40m
2026-07-07 SEJ600 - Jul 7, 11:20 UTCJul 7, 11:35 UTC15m
2026-07-07 SEJ600 - Jul 7, 09:50 UTCJul 7, 10:25 UTC35m
2026-07-07 SEJ124 - Jul 7, 05:00 UTCJul 7, 08:10 UTC3h 10m
2026-07-07 SEJ122 - Jul 7, 00:55 UTCJul 7, 03:30 UTC2h 35m
2026-07-06 SEJ803 - Jul 6, 19:10 UTCJul 6, 20:55 UTC1h 45m
2026-07-06 SEJ802 IXB → MAA Jul 6, 17:20 UTCJul 6, 17:35 UTC15m
2026-07-06 SEJ802 IXB → MAA Jul 6, 15:50 UTCJul 6, 16:20 UTC30m
2026-07-06 SEJ123 DEL → DEL Jul 6, 06:55 UTCJul 6, 10:15 UTC3h 20m
2026-07-06 SEJ9122 DEL → DEL Jul 6, 02:15 UTCJul 6, 05:50 UTC3h 35m
2026-07-05 SEJ906 CCU → DEL Jul 5, 19:20 UTCJul 5, 21:10 UTC1h 50m
2026-07-05 SEJ905 DEL → CCU Jul 5, 16:30 UTCJul 5, 18:25 UTC1h 55m
2026-07-05 SEJ9222 - Jul 5, 12:15 UTCJul 5, 13:00 UTC45m

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 VT-SLB page for operator, model, and routing details .

Mode-S 800B81 frequently asked

What is Mode-S code 800B81?
800B81 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-SLB.
Where is Mode-S 800B81 registered?
Mode-S code 800B81 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 800B81 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 800B81, octal 40005601, decimal 8,391,553.
What flights does 800B81 operate?
Mode-S 800B81 has broadcast 20 distinct callsigns, including SEJ126, SEJ122, SEJ128, SEJ124, SEJ496.