It seems that for country for SK (+421) all 3 digit numbers that is not recognized as district (fixed line) prefix, is forced to format as xx/x which is not correct. google lib formatting is OK. ## Steps to reproduce formating: **090** (most important for us) 055 059 080 ## Observed result **09/0** 055 05/9 08/0 ## Expected result **090** (is most common mobile prefix in country and is important) 055 (its valid fixed line prefix, it is OK as is) 059 or 05/9 (its invalid, doesn't matter) 080 (its starts of 0800 that is free of charge number) ## Demo link https://catamphetamine.gitlab.io/libphonenumber-js/?parseCountry=SK&parseValue=090&asYouTypeCountry=SK&asYouTypeValue=090&findNumbersCountry=SK ## Google's demo link https://libphonenumber.appspot.com/phonenumberparser?number=090&country=SK