What is a DNS Suffix?

What is a DNS Suffix?


DNS stands for Domain Name System and is the Internet equivalent to a phone book. When you type in a website, your browser sends a request to the DNS server which connects it with the correct IP address. The domain name is translated into an IP address by querying one or more DNS servers—usually provided by your ISP (Internet Service Provider). If that fails, then information about similar domains can be used as well. This process of resolving domain names into their corresponding IP addresses is called “DNS lookup”.

A suffix in computer networking represents the domain name, just like in regular language where you add “ly” or “-er” to finish the word. It is used for specifying location-specific information on Internet Protocol (IP) networks, such as when assigning suffixes of Internet Protocol Version 4 (IPv4) addresses for a local area network. If you own a computer connected to the Internet, then you also have an IP address that is unique to your specific machine.

What is a DNS Suffix?

A DNS suffix (Domain Name System) is a suffix assigned to a domain. A domain may have more than one DNS suffix. DNS suffixes are used to locate the proper domain server.

A DNS suffix can be either a hostname or a fully qualified DNS name. A hostname is assigned to a local computer and consists of at least one label, which starts with an alphabetic character and contains only alphanumeric characters and underscores.A DNS suffix is a sequence of one or more labels that ends with a top-level domain (TLD) name. The TLD identifies the type of entity that is associated with the suffix. A DNS suffix has a priority that determines the order in which it is used to locate and communicate with one or more computers. The lower the numeric value, the higher its priority.

How does it work?

A DNS server stores a zone file containing a list of boundary domain names. When a user sends a request to a name, the DNS server queries its zone file and returns the resource record corresponding to that name. This process is repeated from one zone file to another until the desired domain name is found.

For instance, if a DNS server is asked for ‘www.google.com’, it might return an A record (IP address) from its cache or query another DNS server for the IP of www.google.com. This last action will result in a full search; one DNS server after another until the correct domain name and IP Address is obtained.

A DNS suffix is the domain name that comes after an @ sign in your email address. For example, if your email address is user@domain.com, then ‘domain.com’ would be the DNS suffix for that email account.

Why do you need one?

A DNS suffix, or domain name system (DNS) zone, is the place on a network or on the Internet where your website lives. It’s like a street address for email and web traffic. A DNS suffix doesn’t cost anything to set up; anyone can create one with little more than 15 minutes and basic computer skills. Why you would need it:

-It’s free and required to host any type of website

-It provides invaluable security by hiding your personal information from spammers and other online threats while giving you control over who has access to your site

-You’ll get more search engine ranking power with a .com ending instead of whatever else is served up when your full address is typed into a browser

-You’ll have a shorter, more memorable web address if you use a DNS suffix instead of adding numbers at the end of an IP address every time you want to get online. This is especially a plus when writing about or talking about your site.

What are some benefits of DNS Suffix?

DNS Suffix provides a great level of security and reliability to website owners. The DNS suffix also ensures that any company or business that the owner chooses to partner up with will be able to interact securely and reliably with the company. This is done by ensuring the company only has to deal with one visitor at a time. There is no need for any concern as to whether or not there will be a collision of IP addresses.

The DNS suffix also makes it easier for companies to share files and unlimited data with the company hosting the website. It also allows companies to set up SSL certificates for their websites if they so choose. These certificates allow the companies to encrypt their data so it stays safe from any outside threats.


DNS suffixes are used to designate what domain a website belongs to. When you type in an address like google.com, your computer will look up the DNS suffix and connect with the corresponding IP address for that site. This is how it knows which server contains all of Google’s content and can retrieve it from there instead of trying to pull everything down over its own connection. Suffixes also determine where email messages should be sent when they’re addressed without any other information about their recipient’s location (a “bounce”). It may seem trivial at first glance but understanding these benefits can help you make better decisions on whether or not this service is something your company needs as well as what kind of plan would work best for them if it is.

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