With this extension you can easily redirect your visitors to the site, which has the appropriate language. For example if somebody comes from an ES, MX etc. Spanish language territory, then he can see the the webpage in Spanish on the es.domain.com subdomain. If he want to see the webpage in English after all, then you can offer an en.domain.com English language subdomain.
Details here:
https://lucknowwebs.com/country-based-r ... webbuilder