Since 2014, this study has reported on the top 20 IDN spaces. The top 20 IDN spaces have consistently comprised 90% of all IDN registrations. The relative positioning can be seen in the ranking, while analysis of the registration figures shows a typical long-tail pattern.
Across both top and second level registrations, the top 3 largest IDN spaces in December 2017 were:
.cn (second level)
.com (second level)
.РФ (top level)
Second level IDNs – the top 20
The top 20 second level IDN spaces show a typical long-tail pattern. Three TLDs, .cn, .com, and .de have more than 500 000 registrations after which the numbers tail off. The .eu second level IDNs remain in the top 20, ranking at 11. Note that the figures for .cn are an estimate based on 2016 data.
Top level IDNs – the top 10
The top level IDN spaces again show a typical long tail pattern. The two largest are the ccTLDs from Russia and China, which have been established since 2009 and 2010. Others are more recently released new gTLD IDNs. Note that the figures for China are an estimate using 2016 data.