IRCTC is a official website for Indian Railway Online Ticket Reservation Booking Service. It is only service to get Indian train ticket booking online service. it is an trusted and most popular website for ticket booking, And it is only way for Train Ticket Tatkal Booking at the time of 10.00 AM to 11.59 AM. After 11.59 AM there is more third party Websites and softwares are giving the Ticket booking online availability. 

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But PNR Enquiry is available on much more 3rd party websites at 24 Hrs facility. if you don't have internet facility in your near area, you can get the PNR Status via Just Sending one SMS to 139 and get  your PNR Status. the Procedure for Sending SMS is below Shown. but the Messeging Charges will charge from your Mobile balence.