TXT Record Lookup: What It Is and How to Check One
What DNS TXT records are used for, how to look one up, and how to read SPF, DKIM, DMARC, and site-verification TXT records specifically.
Guides
nslookup Command Guide: Query DNS from Your Terminal
How to use nslookup to query A, MX, TXT, and other DNS records from the command line, on Windows, macOS, and Linux, with practical examples.
How to Fix 'DNS Server Not Responding'
Step-by-step fixes for the 'DNS server not responding' error on Windows, macOS, and routers — from quick restarts to changing your DNS resolver.
DNS Record Types Explained: A, MX, TXT, CNAME, NS & More
A reference guide to the DNS record types you'll actually encounter — A, AAAA, MX, TXT, CNAME, NS, and a few others — with examples of when to use each.
DKIM Selector and DKIM Generator: How DKIM Signing Works
What a DKIM selector actually is, how DKIM key pairs get generated, and how to find your selector for Google Workspace, Microsoft 365, and other providers.
SPF Record Syntax Explained (with Examples)
A reference for SPF record syntax — mechanisms, qualifiers, modifiers, the 10-lookup limit, and real-world examples for Google, Microsoft 365, and multi-provider setups.
How to Check MX Records (Free MX Record Checker Guide)
Three ways to check a domain's MX records — a free browser tool, the command line, and what the results actually mean.
What Is an MX Record? A Complete Guide
A plain-language explanation of MX records: what they do, how priority values work, and how to read one correctly.