Approx 7.5 million IDNs (Dec 2017)
The estimated number of IDNs declined during 2017 by -14%. The largest impact is due to a change in policy by the ccTLD registry for Viet Nam, which led to a drop in their second level IDNs from nearly 1 million to just over 5 000. Excluding the impact of Viet Nam, there was a drop of approximately 6% during 2017 (from 5.4 m to 5.1 m).
IDNs comprise 2% of the world’s domains
IDNs have consistently comprised approximately 2% of overall domain name registrations. In 2016, thanks to a growth in second level IDNs under the Chinese ccTLD, .cn, the percentage of overall domains was 3%.