Atom Syndication Format is an XML language used for web feeds very similar to RSS.
https://en.wikipedia.org/wiki/Atom_%28standard%29
Syndication Techniques
Get access to data on 9,105,959 websites Atom Customers. We know of 2,632,765 live websites using Atom and an additional 6,473,194 sites that used Atom historically and 1,250,188 websites in the United States.
Get a list of 9,105,959 websites using Atom which includes location information, hosting data, contact details, 2,632,765 currently live websites and an additional 1,584,189 domains that redirect to sites in this list. 6,473,194 sites that used this technology previouslyand 1,250,188 websites in the United States currently using Atom.
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