At the second level, Han is the most popular script (53%); next comes Latin (25%), Hangul (9%, associated with Korean language), scripts associated with Japanese language (combined Han, Katakana and Hiragana) (6%). All other scripts, including Cyrillic, Arabic, Devanagari (with hundreds of millions of speakers offline) represent 7% of second level IDNs.
During 2018, there has been an increase in the percentage of Hangul script second level IDNs, thanks to a change in registration policy by KISA, the ccTLD for the Republic of Korea.
In general, there is a good fit between a Latin script IDN (usually with accents or diacritics) and an ASCII TLD, where ASCII is a subset of Latin script. For example, for Germany, France, or Turkey, whose languages are based on Latin script, it makes sense to deploy IDNs at the second level under established ccTLDs (.de, .fr and .tr).