What is a SubDomain ?

The Domain Name System (DNS) has a tree structure or hierarchy, with each non-RR (resource record)
node on the tree being a domain name. A subdomain is a domain that is part of a larger domain;
the only domain that is not also a subdomain is the root domain. For example, west.example.com
and east.example.com are subdomains of the example.com domain, which in turn is a subdomain of
the com top-level domain (TLD). A "subdomain" expresses relative dependence, not absolute dependence.
In theory this subdivision can go down to 127 levels deep, and each DNS label can contain up to 63 characters,
as long as the whole domain name does not exceed a total length of 255 characters, but in practice most
domain registries limit at 253 characters.

Was this answer helpful?

 Print this Article

Also Read

How DNS work?

When you visit a domain such as dyn.com, your computer follows a series of steps to turn the...

How to define DNS record?

Every domain has a specific IP address it corresponds to. This IP address indicates the “home” or...

What is CNAME ?

A Canonical Name record (abbreviated as CNAME record) is a type of resource record in the Domain...

Can I view my site even though my domain's name servers haven't propagated yet?

Yes http://youriphere/~yourusernamehere/ Your IP is located in your welcome email. Please also...

What is DNS ?

Domain Name Servers (DNS) are the Internet's equivalent of a phone book. They maintain a...