A domain name consists of one or more parts, technically called labels, that are conventionally concatenated, and delimited by dots, such as Todaynic.com.

• The right-most label conveys the top-level domain; for example, the domain name www.example.com belongs to the top-level domain com.
• The hierarchy of domains descends from the right to the left label in the name; each label to the left specifies a subdivision, or subdomain of the domain to the right. For example: the label example specifies a node example.com as a subdomain of the com domain, and www is a label to create http://tnet.hk, a subdomain of example.com. This tree of labels may consist of 127 levels. Each label may contain from 1 to 63 octets. The empty label is reserved for the root node. The full domain name may not exceed a total length of 253 characters.^[4] In practice, some domain registries may have shorter limits.
• A hostname is a domain name that has at least one associated IP address. For example, the domain names www.example.com and example.com are also hostnames, whereas the com domain is not. However, other top-level domains, particularly country code top-level domains, may indeed have an IP address, and if so, they are also hostnames.
•  hostname  impose restrictions on the characters allowed in the corresponding domain name. A valid hostname is also a valid domain name, but a valid domain name may not necessarily be valid as a hostname

About Eranet
Todaynic.com International Limited(Eranet.com) was incorporated in Hong Kong in 2005, directly under Todaynic.com, Inc. which was established in 2000. As one of the first ICANN (The Internet Corporation for Assigned Names and Numbers), Verisign, HKDNR, and CNNIC (The China Internet Network Information Center) accredited registrars, Eranet is also a leading provider of services in domain name registration and web hosting.

Register domain names here