sensors Mode-S transponder

4891B6

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-ENX · BOEING 737-800

Hex
4891B6
Octal
22110666
Decimal
4,755,894
Country
PL
Tail
SP-ENX
Type
B738
No current signal · last broadcast 8h ago
Flights observed
113
Distinct callsigns
20
Country
PL
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 4891B6.

Country allocation

The ICAO 24-bit address 4891B6 falls within the block assigned to Poland (PL) by ICAO Annex 10, Volume III. Every aircraft registered in Poland 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
ENT6063 - 12 2026-05-18
ENT6062 DAT Enterprise Limited 12 2026-05-19
ENT6631 - 9 2026-05-18
ENT6632 - 8 2026-05-18
ENT5WU - 2 2026-05-25
ENT2AP - 2 2026-04-16
ENT1 - 2 2026-04-23
ENT9ST - 1 2026-05-29
ENT9EB - 1 2026-05-04
ENT9CP - 1 2026-04-23
ENT8WP - 1 2026-05-04
ENT8MD DAT Enterprise Limited 1 2026-05-03
ENT8GY - 1 2026-05-05
ENT8EN - 1 2026-05-02
ENT8ED DAT Enterprise Limited 1 2026-05-06
ENT8BF - 1 2026-04-26
ENT8BA - 1 2026-05-30
ENT7PZ DAT Enterprise Limited 1 2026-05-29
ENT7ME - 1 2026-05-05
ENT7KG - 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 ENT4492 - Jun 3, 02:10 UTCJun 3, 04:45 UTC2h 35m
2026-06-02 ENT4777 KTW → AYT Jun 2, 22:55 UTCJun 3, 01:10 UTC2h 15m
2026-06-02 ENT2CT POZ → LPA Jun 2, 09:20 UTCJun 2, 11:45 UTC2h 25m
2026-05-30 ENT1617 - May 30, 18:50 UTCMay 30, 22:15 UTC3h 25m
2026-05-30 ENT8BA - May 30, 15:30 UTCMay 30, 17:45 UTC2h 15m
2026-05-30 ENT4MY - May 30, 12:25 UTCMay 30, 14:30 UTC2h 5m
2026-05-30 ENT4436 - May 30, 08:25 UTCMay 30, 11:25 UTC3h 0m
2026-05-30 ENT4435 - May 30, 04:25 UTCMay 30, 07:00 UTC2h 35m
2026-05-29 ENT7PZ BER → BRE May 29, 14:05 UTCMay 29, 15:20 UTC1h 15m
2026-05-29 ENT9ST - May 29, 09:05 UTCMay 29, 12:55 UTC3h 50m
2026-05-28 ENT6FB FUE → WRO May 28, 08:05 UTCMay 28, 10:10 UTC2h 5m
2026-05-28 ENT4501 POZ → NBE May 28, 04:25 UTCMay 28, 06:35 UTC2h 10m
2026-05-27 ENT7092 - May 27, 13:55 UTCMay 27, 17:00 UTC3h 5m
2026-05-27 ENT7043 KTW → HRG May 27, 09:15 UTCMay 27, 11:55 UTC2h 40m
2026-05-27 ENT7044 - May 27, 05:24 UTCMay 27, 08:10 UTC2h 45m
2026-05-27 ENT7039 WAW → ZNZ May 27, 01:24 UTCMay 27, 04:09 UTC2h 45m
2026-05-25 ENT5WU - May 25, 01:55 UTCMay 25, 02:05 UTC10m
2026-05-24 ENT5WU - May 24, 23:40 UTCMay 24, 23:46 UTC6m
2026-05-24 ENT5LS - May 24, 20:00 UTCMay 24, 21:50 UTC1h 50m
2026-05-24 ENT7024 - May 24, 15:50 UTCMay 24, 18:25 UTC2h 35m
2026-05-24 ENT7023 - May 24, 11:25 UTCMay 24, 14:25 UTC3h 0m
2026-05-24 ENT1GZ - May 24, 04:55 UTCMay 24, 07:40 UTC2h 45m
2026-05-24 ENT3BG - May 24, 00:45 UTCMay 24, 03:10 UTC2h 25m
2026-05-23 ENT7106 - May 23, 21:10 UTCMay 23, 23:35 UTC2h 25m
2026-05-23 ENT4155 - May 23, 17:15 UTCMay 23, 20:00 UTC2h 46m
2026-05-23 ENT7342 - May 23, 12:05 UTCMay 23, 14:45 UTC2h 40m
2026-05-23 ENT7341 - May 23, 08:25 UTCMay 23, 10:55 UTC2h 30m
2026-05-23 ENT4156 AYT → GDN May 23, 04:15 UTCMay 23, 06:50 UTC2h 35m
2026-05-23 ENT7105 KTW → AYT May 23, 00:30 UTCMay 23, 02:55 UTC2h 24m
2026-05-22 ENT4792 - May 22, 01:40 UTCMay 22, 10:55 UTC9h 15m
2026-05-21 ENT7398 - May 21, 07:50 UTCMay 21, 14:20 UTC6h 30m
2026-05-21 ENT4184 - May 21, 03:50 UTCMay 21, 06:15 UTC2h 25m
2026-05-21 ENT4183 KTW → AYT May 21, 00:20 UTCMay 21, 02:40 UTC2h 20m
2026-05-19 ENT511P EDI → EDI May 19, 19:55 UTCMay 19, 21:25 UTC1h 30m
2026-05-19 ENT6062 STR → STR May 19, 14:25 UTCMay 19, 16:15 UTC1h 50m
2026-05-18 ENT6063 - May 18, 17:20 UTCMay 18, 19:25 UTC2h 4m
2026-05-18 ENT6631 - May 18, 14:35 UTCMay 18, 15:50 UTC1h 15m
2026-05-18 ENT6632 - May 18, 10:50 UTCMay 18, 12:15 UTC1h 25m
2026-05-18 ENT6062 STR → STR May 18, 07:35 UTCMay 18, 09:25 UTC1h 50m
2026-05-17 ENT6063 - May 17, 17:40 UTCMay 17, 19:40 UTC2h 0m
2026-05-17 ENT6631 - May 17, 15:10 UTCMay 17, 16:20 UTC1h 10m
2026-05-17 ENT6632 - May 17, 10:55 UTCMay 17, 12:20 UTC1h 25m
2026-05-17 ENT6062 STR → STR May 17, 07:40 UTCMay 17, 09:30 UTC1h 50m
2026-05-16 ENT6063 - May 16, 17:45 UTCMay 16, 19:50 UTC2h 5m
2026-05-16 ENT6631 - May 16, 15:10 UTCMay 16, 16:25 UTC1h 15m
2026-05-16 ENT6632 - May 16, 10:50 UTCMay 16, 12:11 UTC1h 20m
2026-05-16 ENT6062 STR → STR May 16, 07:31 UTCMay 16, 09:16 UTC1h 45m
2026-05-15 ENT6063 - May 15, 17:30 UTCMay 15, 19:30 UTC2h 0m
2026-05-15 ENT6631 - May 15, 14:25 UTCMay 15, 15:40 UTC1h 14m
2026-05-15 ENT6632 - May 15, 10:45 UTCMay 15, 12:15 UTC1h 30m

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 SP-ENX page for operator, model, and routing details .

Mode-S 4891B6 frequently asked

What is Mode-S code 4891B6?
4891B6 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-ENX.
Where is Mode-S 4891B6 registered?
Mode-S code 4891B6 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4891B6 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4891B6, octal 22110666, decimal 4,755,894.
What flights does 4891B6 operate?
Mode-S 4891B6 has broadcast 20 distinct callsigns, including ENT6063, ENT6062, ENT6631, ENT6632, ENT5WU.