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What is a DNS record?
DNS records (aka zone files) are commands that live in authoritative DNS servers and offer statistics approximately a domain along with what IP address is associated with that domain and how to manage requests for that domain. These information include a chain of textual content files written in what's called DNS syntax. DNS syntax is only a string of characters used as instructions that tell the DNS server what to do. All DNS statistics actually have a ‘TTL’, which stands for time-to-live, and indicates how frequently a DNS server will refresh that document.
You can consider a hard and fast of DNS statistics like a business listing on Yelp. That list will provide you with a bunch of useful facts about a enterprise which includes their vicinity, hours, services supplied, and so on. All domain names are required to have at the least some vital DNS information for a consumer in order to get entry to their internet site the use of a site call, and there are several non-compulsory records that serve extra purposes.
What are the most common types of DNS record?
• A file - The report that holds the IP cope with of a website. Research greater about the A file.
• AAAA record - The document that includes the IPv6 address for a site (as opposed to A statistics, which listing the IPv4 deal with). Research more approximately the AAAA file.
• CNAME record - Forwards one area or subdomain to any other domain, does now not provide an IP deal with. Research greater approximately the CNAME file.
• MX document - Directs mail to an electronic mail server. Analyze greater about the MX report.
• TXT file - we could an admin store textual content notes inside the document. These facts are regularly used for e-mail safety. Examine greater about the TXT record.
• NS file - stores the call server for a DNS access. Study greater approximately the NS report.
• SOA report - shops admin statistics approximately a domain. Research extra approximately the SOA record.
• SRV record - Specifies a port for particular offerings. Learn greater approximately the SRV document.
• PTR report - affords a site call in reverse-lookups. Examine extra approximately the PTR record.
What are some of the less commonly used DNS records?
• AFSDB document - This record is used for clients of the Andrew record device (AFS) evolved by means of Carnegie Melon. The AFSDB file functions to find different AFS cells.
• APL document - The ‘cope with prefix list’ is an experiment report that specifies lists of cope with stages.
• CAA report - that is the ‘certification authority authorization’ document, it allows domain proprietors kingdom which certificates government can difficulty certificate for that area. If no CAA document exists, then anyone can trouble a certificates for the domain. Those data also are inherited by subdomains.
• DNSKEY record - The ‘DNS Key document’ consists of a public key used to affirm domain name machine security Extension (DNSSEC) signatures.
• CDNSKEY document - that is a baby reproduction of the DNSKEY record, supposed to be transferred to a figure.
• CERT document - The ‘certificates document’ shops public key certificate.
• DCHID report - The ‘DHCP Identifier’ shops info for the Dynamic Host Configuration Protocol (DHCP), a standardized community protocol used on IP networks.
• DNAME document - The ‘delegation name’ document creates a website alias, much like CNAME, but this alias will redirect all subdomains as nicely. For example if the owner of ‘example.Com’ offered the domain ‘internet site.Internet’ and gave it a DNAME report that factors to ‘instance.Com’, then that pointer might also expand to ‘blog.Internet site.Internet’ and any other subdomains.
• HIP report - This document makes use of ‘Host identity protocol’, a way to separate the roles of an IP deal with; this document is used most usually in mobile computing.
• IPSECKEY record - The ‘IPSEC key’ file works with the internet Protocol protection (IPSEC), an end-to-give up protection protocol framework and a part of the net Protocol Suite (TCP/IP).
• LOC report - The ‘place’ record consists of geographical facts for a domain in the form of longitude and latitude coordinates.
• NAPTR record - The ‘name authority pointer’ report can be mixed with an SRV file to dynamically create URI’s to point to based totally on a regular expression.
• NSEC report - The ‘next cozy record’ is a part of DNSSEC, and it’s used to prove that a requested DNS resource file does not exist.
• RRSIG file - The ‘resource file signature’ is a file to store virtual signatures used to authenticate records in accordance with DNSSEC.
• RP report - that is the ‘accountable man or woman’ report and it stores the email deal with of the man or woman chargeable for the domain.
• SSHFP document - This document stores the ‘SSH public key fingerprints’; SSH stands for secure Shell and it’s a cryptographic networking protocol for cozy conversation over an unsecure community.
