Country code: +994
Simple to use Yellow Pages directory for Azerbaijan for almost 4000 companies - includes reverse search by number (select the 'by phone' option).
Small business directory in Russian. Tailor your search by city or do a countrywide search using the first option in the drop down box in the search box. To do a more advanced search click on Расширенный поиск under the Find (Найти) button.
Russian Information Network Yellow Pages - search for companies using the options on the left hand side. Not the easier format to follow when searching - the main thing is to select as many options from the drop down boxes on the left hand side to get a better search result.
Business directory with almost 8000 entries - includes reviews where added and also reverse search by number.