DNS blog and troubleshooting guides
Clear answers for domain owners, developers, and marketers working with DNS records, propagation, email authentication, and lookup results.
DNS Propagation: What It Means and How to Check It
Learn what DNS propagation means, why updates can take time, and how to check whether a domain points to the correct IP address.
How to Change Nameservers Without Website or Email Downtime
Use a staged migration checklist to copy records, lower TTLs, and verify delegation.
DKIM Records: Publish Keys and Verify Email Signatures
Learn how selectors, public keys, and signature checks improve email authenticity.
DNS TTL Explained: Choose the Right Cache Time
Balance faster changes, resolver load, and reliability by selecting an appropriate TTL.
NS Records: How Authoritative Nameservers Work
Learn how delegation works and how to spot mismatched or stale nameserver records.
TXT Records: Verification, Email Security, and Troubleshooting
See how TXT records support ownership checks, SPF, DKIM, DMARC, and other services.
AAAA Records Explained: Add IPv6 to Your Domain
A practical guide to publishing IPv6 addresses in DNS without disrupting existing IPv4 traffic.
A Records Explained: Point a Domain to an IPv4 Address
Learn what an A record does, how to configure it, and how to troubleshoot common mistakes.