What is the logic behind PNR number?

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.



The Passenger Name Record (PNR) is a digital file stored in an airline's Computer Reservation System (CRS) that acts as the primary "folder" for your travel details. The "logic" behind the 6-character alphanumeric PNR code (also called a record locator) is to provide a unique, easily retrievable address for this file in a massive database. While the codes often appear random, they are generated by algorithms to ensure uniqueness and to prevent the use of offensive words. A single PNR can contain information for up to nine passengers traveling together on the same itinerary, including names, contact details, ticketing status, and special service requests like meal preferences or wheelchair assistance. This centralized system allows multiple airlines in an alliance (like Star Alliance) to access the same "source of truth" for a passenger's journey, ensuring that check-in agents and gate staff have real-time access to the most current booking data.

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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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Passenger Name Records (PNR) Also known as Booking Files, a PNR is a unique identifier from a specific provider that serves as the record for a specific trip.

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The PNR Record Locator is the reservation number of the trip booked by the travel agency from the GDS system, which is typically different than the airline confirmation code. The airline confirmation number is what is required for the traveler to check-in to their flight.

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For example, it's possible to have the same PNR for different flights if a round-trip or connecting flight is booked with the same airline. If the connecting flight involves two airlines that don't have an agreement, there may be different PNRs for each segment of the trip.

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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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A Passenger Name Record (PNR) is a unique carrier reservation number for one or more flights. 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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Yes, in most cases the PNR number is also the booking number. There are slight differences with some airlines, but for the most part, air travelers have everything they need to check in with the PNR number.

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