List Search provides details of over 75,000 lists owned by the 250 most reputable list companies. - http://www.list-search.net
As far back as 1965 List Search started collecting datacard information from reputable list providers; as at today, our list search engines allow our users to search, using one or more keywords, over 75,000 different direct mail, telemarketing, and email lists through a single search box.