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sensors Mode-S transponder

88817C

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A607 · AIRBUS A-321neo

Hex
88817C
Octal
42100574
Decimal
8,946,044
Country
VN
Tail
VN-A607
Type
A21N
Broadcasting now · callsign VJC821 · 34,000 ft
Flights observed
268
Distinct callsigns
20
Country
VN
Last broadcast
Jul 23, 04:00 UTC

Current position

88817C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 88817C falls within the block assigned to Vietnam (VN) by ICAO Annex 10, Volume III. Every aircraft registered in Vietnam 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
VJC822 VietJet Air 39 2026-07-22
VJC823 VietJet Air 37 2026-07-23
VJC821 - 22 2026-07-14
VJC820 - 21 2026-07-14
VJC91 - 12 2026-06-28
VJC92 - 9 2026-06-29
VJC876 - 9 2026-07-06
VJC825 - 9 2026-06-17
VJC877 - 8 2026-07-06
VJC826 - 8 2026-06-26
VJC885 - 5 2026-06-30
VJC1805 VietJet Air 5 2026-06-04
VJC1804 - 5 2026-07-09
VJC862 VietJet Air 4 2026-07-07
VJC828 - 4 2026-07-06
VJC933 - 3 2026-07-12
VJC932 - 3 2026-07-11
VJC1803 VietJet Air 3 2026-07-08
VJC998 VietJet Air 2 2026-06-09
VJC960 VietJet Air 2 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 VJC823 NRT → SGN Jul 23, 00:20 UTCJul 23, 04:00 UTC3h 40m
2026-07-22 VJC822 SGN → NRT Jul 22, 13:05 UTCJul 22, 22:35 UTC9h 30m
2026-07-22 VJC138 SGN → HAN Jul 22, 11:20 UTCJul 22, 11:45 UTC25m
2026-07-22 VJC823 NRT → SGN Jul 22, 00:25 UTCJul 22, 04:00 UTC3h 35m
2026-07-21 VJC822 SGN → NRT Jul 21, 14:20 UTCJul 21, 22:50 UTC8h 30m
2026-07-21 VJC805 - Jul 21, 04:15 UTCJul 21, 13:00 UTC8h 45m
2026-07-21 VJC126 SGN → HAN Jul 21, 02:30 UTCJul 21, 02:50 UTC20m
2026-07-16 VJC823 - Jul 16, 00:30 UTCJul 16, 12:20 UTC11h 50m
2026-07-15 VJC822 - Jul 15, 08:25 UTCJul 15, 22:55 UTC14h 30m
2026-07-14 VJC821 - Jul 14, 17:20 UTCJul 15, 07:00 UTC13h 39m
2026-07-14 VJC820 NRT → HND Jul 14, 00:35 UTCJul 14, 15:35 UTC15h 0m
2026-07-13 VJC822 - Jul 13, 19:05 UTCJul 13, 23:00 UTC3h 55m
2026-07-13 VJC151 - Jul 13, 11:25 UTCJul 13, 11:35 UTC10m
2026-07-13 VJC140 - Jul 13, 09:30 UTCJul 13, 09:45 UTC15m
2026-07-13 VJC823 - Jul 13, 00:50 UTCJul 13, 04:00 UTC3h 10m
2026-07-12 VJC822 - Jul 12, 19:40 UTCJul 12, 23:10 UTC3h 30m
2026-07-12 VJC153 - Jul 12, 12:55 UTCJul 12, 13:05 UTC10m
2026-07-12 VJC1774 - Jul 12, 07:15 UTCJul 12, 11:35 UTC4h 20m
2026-07-12 VJC933 - Jul 12, 05:35 UTCJul 12, 05:45 UTC10m
2026-07-12 VJC933 - Jul 12, 01:00 UTCJul 12, 04:45 UTC3h 45m
2026-07-11 VJC932 - Jul 11, 21:10 UTCJul 11, 23:00 UTC1h 50m
2026-07-11 VJC932 - Jul 11, 17:55 UTCJul 11, 18:05 UTC10m
2026-07-11 VJC931 - Jul 11, 11:00 UTCJul 11, 11:10 UTC10m
2026-07-11 VJC931 - Jul 11, 07:10 UTCJul 11, 08:10 UTC1h 0m
2026-07-11 VJC930 - Jul 11, 01:10 UTCJul 11, 05:45 UTC4h 35m
2026-07-09 VJC1804 - Jul 9, 21:05 UTCJul 10, 15:20 UTC18h 15m
2026-07-09 VJC1804 - Jul 9, 19:10 UTCJul 10, 15:20 UTC20h 10m
2026-07-09 VJC1804 - Jul 9, 15:05 UTCJul 10, 14:55 UTC23h 50m
2026-07-09 VJC1804 - Jul 9, 13:45 UTCJul 10, 09:10 UTC19h 25m
2026-07-09 VJC1804 - Jul 9, 07:45 UTCJul 9, 22:15 UTC14h 30m
2026-07-08 VJC1803 SGN → HYD Jul 8, 21:05 UTCJul 9, 21:00 UTC23h 55m
2026-07-08 VJC1803 SGN → HYD Jul 8, 19:45 UTCJul 9, 16:30 UTC20h 45m
2026-07-08 VJC1803 SGN → HYD Jul 8, 17:55 UTCJul 9, 16:30 UTC22h 35m
2026-07-08 VJC863 ICN → HND Jul 8, 04:35 UTCJul 8, 16:30 UTC11h 55m
2026-07-07 VJC862 SGN → ICN Jul 7, 08:55 UTCJul 8, 00:45 UTC15h 50m
2026-07-07 VJC862 SGN → ICN Jul 7, 03:05 UTCJul 8, 00:45 UTC21h 40m
2026-07-07 VJC862 SGN → ICN Jul 7, 01:05 UTCJul 8, 00:45 UTC23h 40m
2026-07-07 VJC829 - Jul 7, 00:45 UTCJul 7, 23:00 UTC22h 15m
2026-07-06 VJC828 - Jul 6, 20:15 UTCJul 6, 23:10 UTC2h 55m
2026-07-06 VJC877 - Jul 6, 12:25 UTCJul 6, 12:35 UTC10m
2026-07-06 VJC876 - Jul 6, 10:25 UTCJul 6, 11:00 UTC35m
2026-07-06 VJC823 - Jul 6, 01:00 UTCJul 6, 04:40 UTC3h 40m
2026-07-05 VJC822 - Jul 5, 08:35 UTCJul 5, 22:40 UTC14h 5m
2026-07-04 VJC821 - Jul 4, 17:35 UTCJul 5, 08:55 UTC15h 20m
2026-07-04 VJC820 - Jul 4, 05:15 UTCJul 4, 15:55 UTC10h 40m
2026-07-03 VJC821 - Jul 3, 17:40 UTCJul 4, 03:55 UTC10h 15m
2026-07-03 VJ863 ICN → HND Jul 3, 03:35 UTCJul 3, 15:40 UTC12h 5m
2026-07-02 VJC862 SGN → ICN Jul 2, 21:45 UTCJul 3, 00:40 UTC2h 55m
2026-07-02 VJC877 - Jul 2, 12:30 UTCJul 2, 12:45 UTC15m
2026-07-02 VJC876 - Jul 2, 10:50 UTCJul 2, 10:55 UTC5m

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 VN-A607 page for operator, model, and routing details .

Mode-S 88817C frequently asked

What is Mode-S code 88817C?
88817C is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A607.
Where is Mode-S 88817C registered?
Mode-S code 88817C is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88817C broadcasting right now?
Yes. Mode-S 88817C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88817C, octal 42100574, decimal 8,946,044.
What flights does 88817C operate?
Mode-S 88817C has broadcast 20 distinct callsigns, including VJC822, VJC823, VJC821, VJC820, VJC91.