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 318,094 websites Korean HREF LANG Customers. We know of 155,659 live websites using Korean HREF LANG and an additional 162,435 sites that used Korean HREF LANG historically and 74,209 websites in the United States.
Get a list of 318,094 websites using Korean HREF LANG which includes location information, hosting data, contact details, 155,659 currently live websites and an additional 579,833 domains that redirect to sites in this list. 162,435 sites that used this technology previouslyand 74,209 websites in the United States currently using Korean HREF LANG.
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