How is PNR generated?

Out of the 10 digits, the first three digits store information about the zone and the Passenger Reservation System (PRS) from which the ticket has been booked. The first digit denotes the railway zone which is the train's origin.



A Passenger Name Record (PNR) is generated through a complex digital handshake between an airline's Reservation System and a Global Distribution System (GDS) like Amadeus or Sabre. When you book a flight, the system collects five mandatory data points (the "PRINT" rule): Phone number, Received from (who made the booking), Itinerary, Name of passenger, and Ticketing info. Once these are entered, the system's algorithm generates a unique 6-character alphanumeric code (the record locator). This code is not just a random string; it is indexed within the airline’s massive database so that multiple service providers—hotels, car rentals, and other airlines—can access the same "folder" of your travel details. The PNR serves as the digital backbone of your trip, storing everything from passport details to meal preferences, and it remains active in the system's history even after the flight has been completed for security and record-keeping purposes.

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A Passenger Name Record is a 10-digit number that is automatically generated when a customer books a train or plane ticket. The PNR is stored within a Computer Reservation System alongside a range of information about the passenger including the itinerary and other personal information.

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The PNR number is generated based on the following information: The first three digits of the PNR number indicate the zone or the railway system that is managing the train. The next seven digits of the PNR number are randomly generated.

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The PNR number may be found in your ticket itself. If more than one ticket is booked at the same time, they will all have the same PNR number. This number corresponds to bookings, not individual passengers.

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You can find your PNR on your e-ticket in the relevant segment of your itinerary. Each part of your trip and each passenger can have a different PNR.

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PNR data derived from flights to, from, or through the United States will be kept by CBP for a period of five years in an active status. After the first six months, the PNR will be “depersonalized,” with names, contact information, and other PII masked in the record.

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If your booking is under two different PNR for two diffetent flights both airlines do not know about your other flight. For each airline you are flying only one sector as per their PNR. So the first airline you travel will check in you and your bag only for that flight.

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PNR Status Prediction Analysis It has been found to be 95 percent accurate the majority of the time, and it is supported by data analysis. Using this feature on the Trainman website and the Android app, you can estimate whether or not your wait list or RAC ticket will be confirmed.

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And because we live in a time of codesharing agreements between different airlines, it's possible to use a PNR to log into five or more airline websites—at which point criminals usually carry out an attack with relative ease and gain access to additional personal information or fraudulently obtain flights for free.

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To cancel flights for a specific traveler, you must divide the reservation. That will create multiple individual reservations, and then cancel the applicable reservation.

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