When do i use a cname




















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Our reviews are unbiased, honest, and apply the same evaluation standards to all those reviewed. Or Failover. Even anomaly detection. Oh who are we kidding, if it's even remotely close to the topic of DNS, we got you covered! This week, we are going to teach you the differences between the four main DNS record types.

Before continuing, we recommend that you already have a basic understanding of what is DNS and how it works. A records are the most commonly used record type. If you have ever set up a website, you most likely configured an A record before. These records are the most basic form of a DNS record and almost all other record types we will discuss are based off of A record functionality. If you are creating a website, then the IP address will usually be given to you by your DNS registrar when you purchased your domain name.

A records also have the ability to be pointed to the root of a domain. For example: if your website is at www. You can learn how to set up an A record here.

This is where things start to get a little more complicated. Not too long ago, we realized the world would eventually run out of IPv4 addresses, so IPv6 addresses were developed. Since we developed a new address type, we also had to create a new record type to support it —hence the addition of AAAA records.

You can learn how to configure AAAA records here. These records are typically used to point multiple hosts to a single location, without having to specifically assign an A record to each hostname.

For example: if you moved your blog from news. CNAME records can also be used to point a hostname to another domain or external hostname. To resolve a CNAME record, the name server must behave slightly different than it would with a normal query of another record type.

You may have noticed that some of the records we have already covered have a few limitations. We needed a record that could point a hostname to another hostname or FQDN but could also represent the root record—essentially a CNAME record for the root of a domain.



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