The Authorize.Net Payment Gateway can help you accept credit card and electronic check payments quickly and affordably.
http://authorize.net/
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Get access to data on 714,160 websites Authorize.net Customers. We know of 426,376 live websites using Authorize.net and an additional 287,784 sites that used Authorize.net historically and 328,139 websites in the United States.
Authorize.net websites that are also using other technologies.
Get a list of 714,160 websites using Authorize.net which includes location information, hosting data, contact details, 426,376 currently live websites and an additional 421,559 domains that redirect to sites in this list. 287,784 sites that used this technology previouslyand 328,139 websites in the United States currently using Authorize.net.
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These are sites that we think might use Authorize.net in the future because of their similarity to other sites that already do.