The top level domain (TLD) .xn—90a3ac is a specific type of domain name that is part of the Domain Name System (DNS), which is used to structure and organize the internet. Top level domain names are situated at the highest level of the DNS structure. They refer to general domains like .com, .net, .org, etc. or to more specific, country-specific domains like .uk, .fr, .de, etc.
The TLD you mentioned, .xn—90a3ac, is a little different as it’s a Punycode representation, widely used as a way to encode domain names with special characters or non-Latin scripts. This particular TLD represents .срб, the country code TLD (ccTLD) for Serbia.
The ccTLD .срб is special in that it uses Cyrillic letters, which are native to the Serbian language, instead of Latin letters commonly used in domain names. Therefore, the Punycode representation .xn—90a3ac is used to represent this Cyrillic ccTLD in the computer systems, because they are designed to handle ASCII characters primarily. This is part of Internationalized Domain Names (IDNs) system, which allows domain names in non-Latin scripts.
This TLD, like all others, is managed and operated by a specific entity. For .срб (xn—90a3ac), this is the Serbian National Internet Domain Registry (RNIDS). According to RNIDS, the domain was officially launched on 27 July 2011.
Using a country specific TLD like .срб can offer several advantages for websites. It can instill a sense of trust and familiarity towards local audiences, potentially improving customer engagement and conversion rates in the process. Moreover, search engines sometimes consider the TLD of a website in their ranking algorithms, giving local businesses a potential boost in visibility for local search queries.
You can find more information about ccTLDs and Punycode on the Internet Corporation for Assigned Names and Numbers (ICANN) website, and specific details about .срб on the RNIDS official website.
Sources:
1. Internet Corporation for Assigned Names and Numbers (ICANN) (https://www.icann.org/)
2. Serbian National Internet Domain Registry (RNIDS) (https://www.rnids.rs/)
3. Wikipedia articles on Punycode (https://en.wikipedia.org/wiki/Punycode) and Internationalized Domain Names (https://en.wikipedia.org/wiki/Internationalized_domain_name)