Pincode or Postal Index Number (PIN) is the number given to each post office by India Post or Indian Postal Service.
The Pincode is 6 digits long. First digit indicates the region. Second digit indicates sub-region and third indicates the district. Last three digits refer to delivery post office.
Subscriber Trunk Dialling or STD Codes are the numbers assigned to each city/town/village in India for the purpose of making telephone calls from landline phones in one area to landline phones in other area.
No prefix required for dialling the landlines in the same STD area, however STD code has to be prefixed when dialling to landline numbers in different STD area. STD code is required when calling landline phone from mobile phone.
The DOT or Department of Telecommunications has divided India into various telecom circles or cellular zones. Within each circle, the call is treated as local and across the circles it becomes a STD call.
At present there are around 22 telecom circles or cellular zones in India. All mobile numbers in India have the prefix 7, 8 or 9.
The Indian Financial System Code or IFSC Code is a unique alpha numeric code given to each bank branch taking part in RTGS (Real Time Gross Settlement) or NEFT (National Electronic Funds Transfer) fund settlement systems in India.
IFSC Code is used by RTGS or NEFT systems to route funds from one bank account to another bank account.
This is an 11 character code with four characters representing bank name and the rest seven characters representing branch.
Indian railways are one of the world's largest railway networks, comprising for approximately 8000 railway stations.
Each of these stations is given a unique code for identifying the station during ticket booking and other activities.
Here you can find all those station codes at one place.