This webpage has alternate versions available in Korean 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 441,171 websites that are Korean HREF LANG Customers. We know of 218,979 live websites using Korean HREF LANG and an additional 222,192 sites that used Korean HREF LANG historically and 106,900 websites in the United States.
Get a list of 441,171 websites using Korean HREF LANG which includes location information, hosting data, contact details, 218,979 currently live websites and an additional 568,690 domains that redirect to sites in this list. 222,192 sites that used this technology previouslyand 106,900 websites in the United States currently using Korean HREF LANG.
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