DNS Record Check for Domain

The DNS is a domain name system for obtaining information about domains. It is most often used to obtain an IP address by domain name.

• The A record – This is an address record used to match a domain name with the server's IP address (IPv4).
• The AAAA record – An address record used to match a domain name with the server's IP address (IPv6).
• The CNAME record – Canonical name for an alias.
• The MX record – The mail gateway address for the domain. It consists of two parts, priority (the higher the number, the lower the priority), and the host address. It helps the mail agent to understand which server to forward emails to for a specific domain.
• The NS record – The address of the node responsible for the domain zone. Critically important for the functioning of the domain name system itself.
• The TXT record – Arbitrary data record. Often used for SPF, it allows the domain owner to specify a list of servers authorized to send email messages with return addresses in this domain. Also for DKIM – an email authentication method developed to detect email message forgery. The method allows the recipient to verify that the email was indeed sent from the claimed domain. DKIM simplifies the fight against fake sender addresses, which are often used in phishing emails and email spam.

If you want to check some specific TXT records for a domain, for example, a TXT record for DKIM, then before the domain through a dot you should add the value of the Host field for this TXT record. For example, if it is written mail._domainkey, then to get this record for the domain yandex.ru it would look like mail._domainkey.yandex.ru