DNS Lookup Tool — Free Online Tool
A, AAAA, MX, TXT, NS, CNAME, and SOA records — all at once.
Enter a domain above to see its A (IPv4), AAAA (IPv6), MX (mail), NS (name server), TXT (SPF, DKIM, DMARC, verification), CNAME, and SOA records.
How to Use the DNS Lookup Tool
The dns lookup tool is engineered for speed — most users get to a clean answer in under ten seconds. Here's the three-step workflow:
-
Step 1
Type a domain (e.g.
google.com) into the box. We automatically strip leading http/https and trailing paths. -
Step 2
Click Lookup. Our server queries your domain's DNS records and returns A, AAAA, MX, NS, TXT, CNAME, and SOA records in one response.
-
Step 3
Review each record section — TXT usually contains SPF/DKIM/DMARC info for email deliverability, MX lists mail servers, NS lists authoritative name servers.
Benefits of Using Our DNS Lookup Tool
Not every online web tools tool respects your time. This one does. Here's what you get when you choose BizNY:
- All seven major DNS record types at once — no need to query each one separately.
- Record TTLs shown alongside values, so you can judge how long records are cached.
- Runs server-side on our infrastructure — no browser-DNS limitations, no CORS issues.
- No logs of your queries are retained after the response is rendered.
- Works for any public domain — your own, your clients', your competitors'.
- Easy to read: record values are clearly separated and formatted for quick scanning.
The Growing Popularity of the DNS Lookup Tool
The DNS lookup tool is a daily utility for webmasters, SEO pros, developers, and IT support engineers. Common use cases include verifying that DNS changes have propagated, checking SPF/DKIM/DMARC records during email deliverability investigations, confirming that a domain points to the right IPv4 or IPv6 address before go-live, and debugging whether a site's name servers are configured correctly. With US small businesses increasingly running on stitched-together cloud services (custom domains on Squarespace, Substack, Mailchimp), demand for a fast, non-technical DNS lookup has climbed alongside them.
Who uses the dns lookup tool?
- Webmasters confirming DNS propagation after a hosting change
- Email admins debugging SPF, DKIM, and DMARC records
- Developers verifying subdomain setups for new projects
- SEO and security researchers analyzing competitor infrastructure
Frequently Asked Questions
Common questions about the dns lookup tool — if you have something else, drop us an email at support@bizny.co.
What are the most common DNS record types?
A (maps a domain to an IPv4 address), AAAA (IPv6), MX (mail exchanger — where email for this domain goes), NS (authoritative name servers), TXT (arbitrary text; used for SPF, DKIM, DMARC, Google Search Console verification, etc.), CNAME (alias), SOA (start of authority metadata).
Why is there sometimes no AAAA or MX record?
AAAA means the domain has an IPv6 address configured — many sites still don't. MX means email is configured for the domain — some domains (landing pages, marketing sites) don't accept email at all.
How is this different from a DNS propagation checker?
Our DNS lookup queries from one location (our server). A propagation checker queries from many locations worldwide to see whether a recent DNS change has reached all of them. For that, try our DNS Propagation Checker.
Can I look up private/internal domains?
No — the lookup uses public DNS resolvers, so internal-only names won't resolve.
Does the tool store my queries?
No queries are logged to a database. Server access logs rotate short-term as is standard.
200+ more free tools — all on BizNY
Calculators, converters, code formatters, text utilities, and web tools — every one of them free, browser-based, and built to US standards.
Browse all tools →