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 9,347,142 websites Atom Customers. We know of 2,758,768 live websites using Atom and an additional 6,588,374 sites that used Atom historically and 1,290,235 websites in the United States.
Get a list of 9,347,142 websites using Atom which includes location information, hosting data, contact details, 2,758,768 currently live websites and an additional 1,797,653 domains that redirect to sites in this list. 6,588,374 sites that used this technology previouslyand 1,290,235 websites in the United States currently using Atom.
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