You could try and use something like the Google translate button and find a reference site for for telephone numbers. They will be that in language and hard to find. Has Fireofx or Chrome got a plug in so you could search in english. Go to Google maps and find a car dealer in Korea or service/food company and try and search for something like a contact telephone number and see if that works. They can't check these numbers and call it, but will check if it's registered