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 9,209,270 websites that are Atom Customers. We know of 3,120,609 live websites using Atom and an additional 6,088,661 sites that used Atom historically and 1,529,543 websites in the United States.
Get a list of 9,209,270 websites using Atom which includes location information, hosting data, contact details, 3,120,609 currently live websites and an additional 1,797,678 domains that redirect to sites in this list. 6,088,661 sites that used this technology previously and 1,529,543 websites in the United States currently using Atom.
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