New Domain and DNS records

New Domain and DNS records


I bought a new domain recently.  I was wondering if I ought to replace my old domain with it.


Purpose of DNS:

  DNS records act as a directory, guiding your browser to the correct server when you enter a domain name. 


Key Types:

  A record: Points a domain name to an IPv4 address. 

  AAAA record: Points a domain name to an IPv6 address. 

  CNAME record: Creates an alias for a domain name. 

  MX record: Directs email to the correct mail server. 

  TXT record: Stores text-based information, often used for SPF and DKIM records. 

  NS record: Specifies the authoritative name servers for a domain. 


Zone files:

  DNS records are often organized into zone files, which are text-based files that contain the configuration for a domain's DNS. 


TTL:

  Each DNS record also has a Time-to-Live (TTL) value, which determines how long a DNS server should cache the record before refreshing it. 

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