The website contains dublin core meta data extensions.
https://dublincore.org
Syndication Techniques
Get access to data on 1,808,804 websites that are Dublin Core Customers. We know of 561,963 live websites using Dublin Core and an additional 1,246,841 sites that used Dublin Core historically and 176,969 websites in the United States.
Get a list of 1,808,804 websites using Dublin Core which includes location information, hosting data, contact details, 561,963 currently live websites and an additional 616,086 domains that redirect to sites in this list. 1,246,841 sites that used this technology previouslyand 176,969 websites in the United States currently using Dublin Core.
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