This webpage has alternate versions available in Spanish via the use of the hreflang tag.
https://support.google.com/webmasters/answer/189077?hl=en
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Get access to data on 6,218,131 websites that are Spanish HREF LANG Customers. We know of 1,276,337 live websites using Spanish HREF LANG and an additional 4,941,794 sites that used Spanish HREF LANG historically and 539,681 websites in the United States.
Spanish HREF LANG websites that are also using other technologies.
Get a list of 6,218,131 websites using Spanish HREF LANG which includes location information, hosting data, contact details, 1,276,337 currently live websites and an additional 2,330,634 domains that redirect to sites in this list. 4,941,794 sites that used this technology previouslyand 539,681 websites in the United States currently using Spanish HREF LANG.
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