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 316,231 websites that are Korean HREF LANG Customers. We know of 161,399 live websites using Korean HREF LANG and an additional 154,832 sites that used Korean HREF LANG historically and 79,986 websites in the United States.
Get a list of 316,231 websites using Korean HREF LANG which includes location information, hosting data, contact details, 161,399 currently live websites and an additional 551,337 domains that redirect to sites in this list. 154,832 sites that used this technology previously and 79,986 websites in the United States currently using Korean HREF LANG.
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