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 474,364 websites that are Authorize.net Customers. We know of 275,359 live websites using Authorize.net and an additional 199,005 sites that used Authorize.net historically and 210,362 websites in the United States.
Authorize.net websites that are also using other technologies.
Get a list of 474,364 websites using Authorize.net which includes location information, hosting data, contact details, 275,359 currently live websites and an additional 341,410 domains that redirect to sites in this list. 199,005 sites that used this technology previously and 210,362 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.