DNS Lookup
Check common DNS record types for websites, email and domain troubleshooting.
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$dig smarter, not louder
DNS lookup tools and clear DNS guides.
Check DNS records, WHOIS information and your public IPv4 address, then learn what the results actually mean. Built for website owners, hosting support, sysadmins and anyone tired of DNS mystery soup.
DNS tool
Lookup DNS records
Enter a domain and choose the record type. Results are checked from the server running this site, so they may differ from your local resolver cache.
Tools
Existing lookup tools, rebuilt
The original DNSNow tools are still here, just wrapped in a cleaner interface with explanations, examples and internal links.
WHOIS Lookup
Look up domain registration and registry data where public WHOIS information is available.
Open tool →What is my IP4
Check the public IPv4 address seen by DNSNow, with quick notes for hosting support checks.
Open tool →Guides
View all guidesStart with these DNS guides
Practical articles that support the tools and give you clean, relevant internal links across the site.
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 →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 →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 →Common DNS Problems and How to Fix Them
A practical guide to common DNS issues including wrong A records, missing MX records, broken CNAMEs, nameserver mistakes and cached answers.
Read guide →SPF, DKIM and DMARC Explained
Understand SPF, DKIM and DMARC DNS records, how they help protect domains, and how to check email authentication settings.
Read guide →Useful Linux Commands for DNS Troubleshooting
Learn practical Linux commands for DNS and website troubleshooting including dig, host, nslookup, curl, ping, traceroute and grep.
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