Not all countries have phone books online. Very often there is only a business directory. Some countries have data protection laws restricting the use of phone number data online.
Many less-developed countries don't have the resources to put a phone book online.
We list all suitable free directories that we know about (unless it clearly duplicates the contents of another directory). If a particular type of directory for a particular country is not listed then as far as we're aware a suitable directory doesn't exist. If you find one, please let us know. Thanks!
Also, all directories added here are manually checked and reviewed, so it's possible a directory is not added because it contains very little data - or simply doesn't work!