DNS & DOMAIN
Understanding DNS: How Domain Names Connect to Websites and Email
Learn how DNS connects domain names to websites, email servers and online services, what DNS records do, and how to troubleshoot common DNS problems.
DNS & Domain Guides
Learn how DNS records, nameservers, WHOIS, domain expiry and routing settings affect websites, email, SSL and domain health.
Topics covered:
DNS recordsNameserversWHOIS & expiryDomain routing
21 articles
All DNS & Domain guides
21 guides covering dns & domain topics.
DNS & DOMAIN
How to Run a Complete Domain Health Check
Learn how to check the technical health of a domain across DNS, email authentication, SSL, website status, blacklist reputation and server configuration.
DNS & DOMAIN
What Is an A Record and How to Configure It
Learn what an A record does, when to use it, how it connects a domain to an IPv4 address, and how to configure it without breaking website access.
DNS & DOMAIN
AAAA Records Explained: Adding IPv6 Support
Learn what an AAAA record is, how it connects a domain to an IPv6 address, when to use it, and how to avoid common IPv6 DNS problems.
DNS & DOMAIN
CNAME vs ALIAS: When to Use Each Record Type
Learn the difference between CNAME and ALIAS records, when to use each one, and why root domains usually need special handling.
DNS & DOMAIN
MX Records 101: Directing Email to the Right Server
Learn what MX records do, how they route incoming email, how MX priority works, and how to check and fix common mail routing problems.
DNS & DOMAIN
TXT Records: SPF, DKIM, DMARC and Beyond
Learn what TXT records are, how they are used for SPF, DKIM, DMARC and domain verification, and how to avoid common TXT record mistakes.
DNS & DOMAIN
CAA Records: Controlling Which CAs Can Issue SSL Certificates
Learn what CAA records are, how they control which certificate authorities can issue SSL certificates, and how to avoid common CAA configuration problems.
DNS & DOMAIN
SOA Records and DNS Zones Explained
Learn what an SOA record is, how DNS zones work, what SOA serial numbers mean, and how to troubleshoot common DNS zone problems.
DNS & DOMAIN
Nameserver Basics: How to Delegate Your Zone
Learn what nameservers are, how DNS delegation works, when to change nameservers, and how to avoid common DNS zone mistakes.
DNS & DOMAIN
Changing Nameservers: Step-by-Step Guide
Learn how to change nameservers safely, prepare the new DNS zone, avoid website and email downtime, and verify the domain after propagation.
DNS & DOMAIN
Understanding TTL: DNS Cache and Propagation Times
Learn what DNS TTL means, how caching affects DNS changes, why propagation takes time, and how to plan safer DNS migrations.
DNS & DOMAIN
DNSSEC for Beginners: Signing Your Zone for Integrity
Learn what DNSSEC is, how it protects DNS integrity, what DS records do, and how to avoid common DNSSEC configuration problems.
DNS & DOMAIN
Using Multiple DNS Providers for Redundancy
Learn when using multiple DNS providers makes sense, how secondary DNS improves resilience, and how to avoid inconsistent DNS records.
DNS & DOMAIN
What Is WHOIS and Why It Matters
Learn what WHOIS shows about a domain, how to read registrar, expiry, status and nameserver data, and why WHOIS matters for domain ownership and troubleshooting.
DNS & DOMAIN
How to Check Domain Expiry and Avoid Problems
Learn how to check when a domain expires, what happens after expiry, and how to avoid website, email and DNS problems caused by missed renewals.
DNS & DOMAIN
Registrar Lock: Preventing Unauthorized Domain Transfers
Learn what registrar lock is, how it protects a domain from unauthorized transfers, when to keep it enabled, and when to disable it safely.
DNS & DOMAIN
Transferring a Domain Between Registrars: Step-by-Step
Learn how to transfer a domain between registrars, unlock the domain, request the EPP/Auth code, approve the transfer and avoid DNS or ownership problems.
DNS & DOMAIN
Setting Up Subdomains: DNS Records and Best Practices
Learn how subdomains work, which DNS records to use, how to configure www, app, mail and other subdomains, and how to avoid common setup mistakes.
DNS & DOMAIN
Root Domain vs WWW: A Records, CNAME and Redirect Strategy
Learn the difference between root domain and www, which DNS records to use, how redirects should work, and how to avoid SSL and duplicate-content issues.
DNS & DOMAIN
Wildcard DNS Records: Use Cases and Configuration
Learn what wildcard DNS records are, when to use them, how they affect subdomains, and how to avoid common routing and SSL problems.
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