What Is a DNS Lookup?
Learn what a DNS lookup is, how domain names become IP addresses, which DNS records matter, and when to use a DNS lookup tool.
Read guide →Start here
Use this hub to understand DNS lookups, record types, propagation, TTL and the command line tools that make DNS troubleshooting easier.
DNS Record Types Explained
A practical guide to common DNS record types including A, AAAA, CNAME, MX, TXT, NS, SOA, PTR and CAA records.
Read guide →DNS Propagation Explained
Learn what DNS propagation means, how caching and TTL affect record changes, and how to check whether DNS has updated.
Read guide →DNS TTL Explained
Learn what DNS TTL means, why it affects caching, and how to choose sensible TTL values before website or email changes.
Read guide →How to Check DNS Records from the Command Line
Learn how to check A, MX, TXT, NS and CNAME records from the command line using dig, host and nslookup.
Read guide →dig vs nslookup
Compare dig and nslookup for DNS troubleshooting, command line checks, resolver testing and website support tasks.
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