DNS Lookup Tool
Query any domain's DNS records instantly. View A, AAAA, MX, NS, TXT, CAA, and SOA records in one place.
What are DNS records?
DNS (Domain Name System) records map human-readable domain names to machine-readable data. A records point to IPv4 addresses, AAAA to IPv6, MX to mail servers, NS to authoritative nameservers, TXT hold verification and policy data (like SPF), and CAA restrict which CAs can issue certificates for your domain.
Why check your DNS records?
Misconfigured DNS causes email delivery failures, website downtime, and security vulnerabilities. Missing MX records mean lost email. Missing CAA records let any CA issue certificates for your domain. Stale A records can point visitors to decommissioned servers or, worse, attacker-controlled infrastructure.
How to fix DNS issues
Log in to your DNS provider (Cloudflare, Route 53, GoDaddy, etc.) and verify each record type. Ensure A/AAAA records point to your current servers, MX records list your mail provider, and TXT records include valid SPF and DMARC policies. Add CAA records to restrict certificate issuance to your chosen CA.
FAQ
Frequently asked questions
Is this DNS lookup tool free?+
Yes, completely free. No signup or credit card required. Query any public domain's DNS records instantly.
What does it mean if a record type shows "None found"?+
Not all record types are required. Every domain needs A or AAAA records to be reachable, and NS records for DNS resolution. MX records are needed only if you receive email. TXT records are recommended for SPF/DMARC. CAA records are optional but strongly recommended for security.
How is this different from dig or nslookup?+
This tool queries all common record types in a single request and presents them in a readable format. dig and nslookup query one record type at a time and require command-line access. CQwerty Shield also cross-references your DNS with security best practices.
DNS Lookup Tool is just the start.
CQwerty Shield checks SSL, DMARC, SPF, DNS, HTTP headers, WHOIS, breach intel, and more — with CVE/KEV cross-references on every finding.
Free full scan — no signup →