DNS allows for a maximum of 63 characters for an individual label.
The longest TLD currently in existence is 24 characters long, and subject to change.
The maximum TLD length specified by RFC 1034 is 63 octets.
What is the longest domain name?
The longest legal domain name is 63 characters starting with a letter or number.
What does Top Level Domain mean?
Top-level domain (TLD) refers to the last segment of a domain name, or the part that follows immediately after the “dot” symbol. TLDs are mainly classified into two categories: generic TLDs and country-specific TLDs. Examples of some of the popular TLDs include .com, .org, .net, .gov, .biz and .edu.
What are the levels of domain?
Generic top-level domain (gTLD)
They include four sub-categories: Generic (.com, .net, .org, .info), domains that can be used for general purposes. Generic restricted (.pro, .biz, .name) domains that can only be used for their specific purposes.
How many top level domain servers are there?
The root domain contains all top-level domains of the Internet. As of July 2015, it contains 1058 TLDs, including 730 generic top-level domains (gTLDs) and 301 country code top-level domains (ccTLDs) in the root domain.