Useful articles on domains, hosting and websites
CAA record lets the domain owner declare via DNS which Certificate Authorities (CA) are allowed to issue SSL. A defense against phishing and unauthori
SRV record announces through DNS which server provides which service on which port. Explained with Microsoft 365, SIP telephony and XMPP examples.
PTR record maps an IP address to a domain name. Learn why it is critical for email server reputation and spam filters, with real Sayt.uz numbers.
The SOA (Start of Authority) record holds the administrative data for a DNS zone — primary NS, admin email, serial number and synchronization timers.
An NS record points at the DNS servers responsible for a domain. Here is how registrar NS, hosting NS, propagation and glue work in practice.
AAAA records bind a domain name to an IPv6 address. With IPv4 addresses exhausted, supporting IPv6 has become a necessary step for any modern website.
An A record points directly to an IP address, while a CNAME points one name to another. Here is when to use each for subdomains, CDN and root domains.
TXT DNS records are used for domain ownership verification, email security and integration with third-party services. SPF, DKIM and DMARC all rely on
An MX record tells mail servers where to deliver messages sent to your domain. When several servers exist, priorities decide the order. This guide exp