There are some telephone directories available in the internet for Sri Lanka fixed lines and CDMA phones. These directories will provide the phone owners name, phone number and the address of the phone owner. Sri Lankan phone directories are the best ones for you, if you are looking for contact details of a person living in Sri Lanka or a Sri Lanka organization if they have a land line connection or CDMA connection.
Land lines and the CDMA phone line provider Sri Lanka Telecom is the biggest company with lot of subscribers. They offer their telephone directories in print media and in the internet as searchable directory. Their phone directory and rainbow pages are very popular with the local public. Also there are Lankabell and Suntel directories available for the CDMA phones in paper and searchable directory web pages in the internet. There are no charges to use these online directories in the web sites from any part of the world.
There are nearly five numbers of mobile phone carriers in Sri Lanka with around 20 million users. These mobile phone carriers don't provide any kind of information about their registered users. So don't look for the mobile phone users' information in Sri Lanka as there is no mobile phone user's directory in the paper or in the internet. Also caller ID can't be hidden in the mobile phone according to the Sri Lanka law.
Here are some links to Sri Lanka phone directories provided for you to get information from call lanka web site.
Public holidays, Sundays and Poya days are the best time to make low priced calls to any part of the world from Sri Lanka through out the day and night.
International country code of Sri Lanka is +94 or 0094.