DNS records are essential components of the Domain Name System, directing and managing internet traffic for domain names. Here are the key DNS record types and their functions:
A Record (Address Record): Maps a domain to an IPv4 address, directing traffic to the correct server.
AAAA Record: Similar to an A record, but maps a domain to an IPv6 address.
CNAME Record (Canonical Name): Creates an alias by pointing one domain or subdomain to another, allowing multiple services to link to a single IP address.
MX Record (Mail Exchange): Specifies mail servers for a domain, prioritizing email delivery routes.
TXT Record: Holds text data for the domain, often used for domain verification and email security protocols like SPF and DKIM.
NS Record (Name Server): Lists authoritative DNS servers for a domain, helping locate its other records.
SOA Record (Start of Authority): Contains administrative information about the domain, such as primary name server, domain serial number, and update intervals.
PTR Record (Pointer): Used for reverse DNS lookups, linking an IP address back to a domain name.
SRV Record (Service Record): Specifies servers for specific services, including their ports; commonly used in VoIP and messaging.
CAA Record (Certificate Authority Authorization): Indicates which Certificate Authorities can issue SSL/TLS certificates for the domain, adding a layer of security.
NAPTR Record (Name Authority Pointer): Enables flexible service location with regular expression-based domain rewrites, typically used alongside SRV records
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