Source: As worded by Indian Railways, Government of India
You can contact the Reservation Enquiry Counters at your nearest Computerised Reservation Centre or call the Interactive Voice Response System, available at major stations. Remember to always quote the 10 digit PNR Number indicated on the upper left hand corner of your ticket, to find out the current status.
The current status of your ticket can also be obtained from the Indian Railways Passenger Information Website: www.indianrailways.gov.in. This site also provides real-time information relating to availability of seats (and berths in a train even between a pair of stations), timetable and train fares etc. For general information on Indian Railways, passengers can access the Indian Railways website : www.indianrailways. gov.in .
Indian Railways provide telephonic enquiry services through a universal number "139" which is accessible from any where in the country without dialing any STD code. This number can be accessed from any type of phone (mobile, landline, WLL etc). Information with regard to arrival/departure/running position of trains, accommodation availability, current status of ticket, fare enquiry etc. are disseminated through this number. After getting connected to "139", the information with regard to arrival/departure of a train at a particular station can be obtained by dialing the train no. and STD code of that station.
The current status of the ticket, status of arrival/departure of train, availability of train accommodation, fare enquiry, etc. can also be obtained by sending SMS to 139. For details kindly visit website www.irctc.co.in