Use the SearchEngineWatch regional list , Search Engines WorldWide or SearchEngineCollossus . Government Disclosure Documents Governments require all companies to release some information - some of this is made public. Much greater information is released from public companies. The information is factual and numerical - and includes both current and past submissions. Further descriptions can be found from their website here or here .
Access is free on the net .
L ibrary Basic Directory Information Address, contact numbers and basic size may be all you need initially. Such information can be found through numerous book directories. Most directories are created from questionnaires, so the information is suggestive - not absolute. The commercial databases to these serials usually cover a far larger area which may be very useful. Every library will have numerous directory titles available, though not always the most recent editions.