Starting June the 3th, 2015 RoTLD Authority will register domain names with Romanian diacriticals.
For more information or any questions like "What IDNA means?", "What is a IDN domain (domain with diacriticals)?", "How many characters could be used in a domain name?" and so on, please go to RoTLD
We list bellow Romanian letters with diacriticals allowed in domain name registration .ro, besides ASCII set of characters allowed in domain names (alphanumeric characters a-x, 0-9 and hiphen character “-“.