About the DNS Lookup

DNS Lookup is a free online tool that retrieves all DNS record types for any domain in one request — showing A, AAAA, MX, TXT, NS, CNAME, and SOA records without needing to run command-line tools.

How It Works

You enter a domain name (e.g., example.com). Our server uses Node.js's built-in dns.promises module to perform parallel DNS queries for all major record types: A (IPv4 addresses), AAAA (IPv6 addresses), MX (mail servers with priorities), TXT (text records including SPF, DKIM, DMARC, and verification tokens), NS (nameservers), CNAME (canonical name), and SOA (start of authority with serial, refresh, retry, and expire values).

All seven queries run simultaneously and results are returned in a single response. Missing record types return empty arrays rather than errors.

What Is sortout.app?

sortout.app is a growing collection of focused web tools, each designed to do exactly one thing well. Every tool is free, requires no account, and is built to load fast anywhere.

Privacy

The domain name you enter is sent to our server over HTTPS. Our server performs the DNS queries and returns the results. We do not store domain names or results after the response is sent. See our full Privacy Policy.

Frequently Asked Questions

Is this tool free?

Yes, completely free with no usage limits.

Do I need to create an account?

No. There is no sign-up, no login, and no registration of any kind.

Why are some record types empty?

Not all domains have all record types. For example, CNAME records are rarely set on apex (root) domains, and AAAA records are only present if the domain supports IPv6.

How fresh are the results?

Results come from the DNS resolver used by our server and reflect the current state of the DNS, subject to TTL caching. If you recently made a DNS change, wait for the TTL to expire and then query again.

Can I look up subdomains?

Yes — enter the full subdomain (e.g., mail.example.com) to look up records for that specific hostname.

Contact

Questions or feedback? Open an issue at github.com/sortout-app/feedback or email hello@sortout.app.