DNS Lookup - NSLookup - DNS Checker

What you should know about DNS Records.

• A record: The most commonly used record on the Internet is the A Record. This contains the valid 32-Bit IPv4 address of the target domain.
• AAAA record: The 128-bit IPv6 address is used for name resolution, just like the IPv4 address. The four "A"s (AAAA) are a mnemonic to illustrate that IPv6 is four times larger than IPv4.
• CNAME record: also known as Canonical Name record, creates an alias of one domain name. The aliased domain or sub-domain gets all the original Domain's DNS records and is commonly used to associate subdomains with the existing main domain. Use the CNAME Lookup tool to dig deeper.
• MX Record: also known as Mail Exchange record, which indicates which Mail Exchange servers are responsible for forwarding the email to the correct destination or mail server. For a detailed analysis, use MX Record Lookup.
• NS Record: also known as Name Server Records, refers to the name servers responsible for managing and publishing DNS records for this domain. These DNS servers are authoritative for handling queries about this domain. Use the NS lookup tool to get more information.
• PTR record: also known as a pointer record, which points the IPv4 or IPv6 address to the host name of the computer. It provides a reverse DNS entry or rDNS entry by pointing an IP address to the host name of the server. Use the Reverse IP Lookup tool to learn more about this.
• SRV record: also known as a service record, indicates what specific services the domain is running and port numbers. Internet protocols such as Extensible Messaging and Presence Protocol (XMPP) and Session Initiation Protocol (SIP) often require SRV records.
• SOA record: also known as Start of Authority record, provides important information about the domain, such as the identification of the root node of the domain's authoritative name server, an email from the domain administrator, the serial number of the DNS zone, etc.
• TXT record: allows the site administrator to insert any text into the DNS record.
• CAA record: also known as Certification Authority Authorization Record, reflects the public policy regarding the issuance of digital certificates for the domain. If no CAA record exists for your domain, any certificate authority can issue an SSL certificate. However, you can use this record to restrict which certificate authority is authorized to issue digital certificates for your domain.
• DS record: also known as delegation signer record, consists of the unique characters of your public domain.