DNS - What are various records
Stored in authoritative DNS servers are the DNS records, these records provide information about a domain including its associated IP address for each domain. It is mandatory for all domains to have a few necessary DNS records to be able to access a website using a domain name.
Below are few common types of records
1. A record
A (Address) Record An A record points a domain name to an IP address. For example, when you type www.google.com in a web browser, it will translate to 172.217.12.46 . This record links your website’s domain name to an IP address that points to where the website’s files live.
2. CNAME record
A CNAME record forwards one domain name to another domain name. This record does not contain an IP address. Utilize this type of record only when there are no other records on that domain name. Otherwise, conflict is introduced by any other records interfering. An example, a CNAME can just go from www.google.com to google.com and not to any additional domain name such as gmail.com.
3. MX Record (Mail Exchanger)
This type of record routes all email messages to a specified mail server on behalf of a recipient’s domain to a designated mail host. The MX records use a priority number when there is more than one MX record entered for any single domain name that is using more than one mail server. The priority number specifies the order of access to the listed mail servers. Counterintuitively, the lower number is the higher priority. For example, the priority number of 10 set within the MX record will receive the email messages first. The MX record with the priority number of 20 will be a backup if the MX record with the priority of 10 is unavailable.
4. TXT record
Utilized for information and verification purposes the TXT record discloses information to other services about your domain such as what services the domain is using. Sender Policy Framework (SPF) records are added as TXT records to help identify if email messages are coming from a trusted source.
5. NS (Name Server) Record
Name servers are servers usually owned by a web hosting company, such as Liquid Web, that are used to manage domain names associated with their web hosting customers. The NS records are created to identify the name servers for each domain name in a given DNS zone.
6. SOA (Start of Authority) Record
References :
Stored in authoritative DNS servers are the DNS records, these records provide information about a domain including its associated IP address for each domain. It is mandatory for all domains to have a few necessary DNS records to be able to access a website using a domain name.
Below are few common types of records
1. A record
A (Address) Record An A record points a domain name to an IP address. For example, when you type www.google.com in a web browser, it will translate to 172.217.12.46 . This record links your website’s domain name to an IP address that points to where the website’s files live.
2. CNAME record
A CNAME record forwards one domain name to another domain name. This record does not contain an IP address. Utilize this type of record only when there are no other records on that domain name. Otherwise, conflict is introduced by any other records interfering. An example, a CNAME can just go from www.google.com to google.com and not to any additional domain name such as gmail.com.
3. MX Record (Mail Exchanger)
This type of record routes all email messages to a specified mail server on behalf of a recipient’s domain to a designated mail host. The MX records use a priority number when there is more than one MX record entered for any single domain name that is using more than one mail server. The priority number specifies the order of access to the listed mail servers. Counterintuitively, the lower number is the higher priority. For example, the priority number of 10 set within the MX record will receive the email messages first. The MX record with the priority number of 20 will be a backup if the MX record with the priority of 10 is unavailable.
4. TXT record
Utilized for information and verification purposes the TXT record discloses information to other services about your domain such as what services the domain is using. Sender Policy Framework (SPF) records are added as TXT records to help identify if email messages are coming from a trusted source.
5. NS (Name Server) Record
Name servers are servers usually owned by a web hosting company, such as Liquid Web, that are used to manage domain names associated with their web hosting customers. The NS records are created to identify the name servers for each domain name in a given DNS zone.
6. SOA (Start of Authority) Record
References :
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