Cname vs a record reddit

1. What is the difference between A record and CNAME record?
2. What is CNAME and A record in DNS?
3. Does a CNAME change the URL?
4. Can you have a CNAME and A record with the same name?
5. Why use a CNAME instead of an A record?
6. What is the advantage of CNAME?
7. Can a DNS record have both A and CNAME?
8. Does a domain need an A record?
9. Will a record override CNAME?
10. Does CNAME affect SEO?
11. Is CNAME slower than a record?
12. What is the difference between A record and CNAME in Route53?
13. What is the difference between alias record and CNAME?
14. What an A record in DNS?
15. Is CNAME slower than A record?
16. What is the difference between DNS alias and A record?
17. What does an A record look like?

What is the difference between A record and CNAME record?

Difference Between A and CNAME

An A Record maps a hostname to one or more IP addresses, while the CNAME record maps a hostname to another hostname.

What is CNAME and A record in DNS?

A Canonical Name or CNAME record is a type of DNS record that maps an alias name to a true or canonical domain name. CNAME records are typically used to map a subdomain such as www or mail to the domain hosting that subdomain's content.

Does a CNAME change the URL?

In other words, CNAME record is not redirecting anything but only points your domain or subdomain to the IP address of the destination hostname. So, if the IP of the destination hostname changes, you won't need to change your DNS records as the CNAME will have the same IP.

Can you have a CNAME and A record with the same name?

A CNAME record must always point to another domain name and never directly to an IP address. A CNAME record cannot co-exist with another record for the same name. It's not possible to have both a CNAME and TXT record for www.example.com .

Why use a CNAME instead of an A record?

General rules: Use an A record if you manage which IP addresses are assigned to a particular machine, or if the IP are fixed (this is the most common case). Use a CNAME record if you want to alias one name to another name, and you don't need other records (such as MX records for emails) for the same name.

What is the advantage of CNAME?

The most popular use for CNAME is that we can use more than one name to map to a single computer FQDN. This makes it easier to manage multiple applications, such as FTP server, POP server and IIS server, which are hosted on the same server.

Can a DNS record have both A and CNAME?

You cannot have a CNAME record and other records for the same name. If the scenario in the question is that you would have a CNAME record and an A record side by side, that is not really a concern since it is not possible.

Does a domain need an A record?

To summarize, an A record is what maps a domain name (www.example.com) to an IP address. And when a domain does not have an A record, the domain name will not work and cannot be used to access any other website or server.

Will a record override CNAME?

Wildcard records don't override existing records (such as CNAME records) When you set a wildcard record, that record does not override any existing subdomain records in the zone (zone is another term for all the DNS records associated with your domain).

Does CNAME affect SEO?

In SEO language, the CNAME can be thought of as a record that specifies a canonical domain at the server level. The good news is that making changes in CNAME does not impact search engine rankings.

Is CNAME slower than a record?

It could be slower as it could require 2 DNS queries. But in the real world a users web browser will not know in advance that sub.domain.com is a CNAME and it will ask for the A or AAAA record of sub.domain.com .

What is the difference between A record and CNAME in Route53?

To clarify my question, the difference between CNAME and A record in a traditional NameServer is that only CNAME can be used to point to a different subdomain and A record must point to a valid IP address. Since the AWS Route53 allows you to do use a subdomain with either A Rec or CNAME ..

What is the difference between alias record and CNAME?

A CNAME record redirects DNS queries for a record name regardless of the record type specified in the DNS query, such as A or AAAA. In the response to a dig or nslookup query, an alias record is listed as the record type that you specified when you created the record, such as A or AAAA.

What an A record in DNS?

What is a DNS A record? The "A" stands for "address" and this is the most fundamental type of DNS record: it indicates the IP address of a given domain. For example, if you pull the DNS records of cloudflare.com, the A record currently returns an IP address of: 104.17. 210.9.

Is CNAME slower than A record?

It could be slower as it could require 2 DNS queries. But in the real world a users web browser will not know in advance that sub.domain.com is a CNAME and it will ask for the A or AAAA record of sub.domain.com .

What is the difference between DNS alias and A record?

A records are standard DNS records while Alias records are custom DNS records. One of the significant differences between an A record and an Alias record is that the A record points a domain name to an IP address. In contrast, an Alias record is used when you want a domain name to point to another domain name.

What does an A record look like?

A record format

where <address> is an IPv4 address and looks like 162.159. 24.4 . The host name for the record, without the domain name. This is generally referred to as “subdomain”.