Free tool · Domain & site research
DNS lookup
Enter a domain to look up its DNS records: A, AAAA, MX, TXT, NS, CNAME and SOA. Handy for checking propagation, email setup and where a domain actually points.
What you get
- A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records with TTLs, from two public resolvers
- DNSSEC status and NXDOMAIN detection, plus internationalized domains
- Email health: SPF with the 10-lookup limit counted, DMARC policy, DKIM keys and MX provider
Sending outreach from this domain? Missing SPF, DKIM or DMARC is the most common reason pitches land in spam.
How it works
Three steps, no signup.
Enter a domain
Type the domain name you want to inspect.
Choose record types
Look up everything at once or focus on A, MX, TXT and the rest.
Read the records
See the live values resolved over secure DNS, with TTLs.
FAQ
DNS Lookup questions.
What are DNS records?
DNS records map a domain to the servers behind it. A and AAAA point to IP addresses, MX to mail servers, TXT to verification and SPF records, NS to nameservers and CNAME to aliases.
How long does DNS propagation take?
Changes can take from a few minutes up to 48 hours to propagate, depending on the record's TTL and caching along the way. Checking the live records here shows what public resolvers currently return.
Why does DNS matter for SEO?
DNS controls where your domain resolves and how email authenticates. Broken records cause downtime, lost email deliverability and failed site migrations, all of which damage rankings and trust.
Where does the lookup data come from?
Queries go over DNS-over-HTTPS to Cloudflare's public resolver, with Google's as a fallback. The tool only resolves the domain name you enter and never connects to arbitrary URLs.
Why check SPF, DKIM and DMARC?
Gmail and Yahoo require all three from bulk senders. Without them, outreach and newsletters from your domain land in spam. The checker counts SPF's DNS lookups (the limit is 10), reads your DMARC policy and looks for DKIM keys at common selectors.
More free tools
Keep going.
SSL Certificate Checker
Check a site's SSL certificate, expiry and chain.
CMS & Tech Stack Detector
Find out which CMS, framework, analytics and CDN a site uses.
Domain Age Checker
See when a domain was registered, its registrar, expiry and first archive.
Google Algorithm Update History
Every Google-confirmed ranking update since 2021, plus major milestones back to 2011.
Tools find the work. Lynx does it.
Lynx is an AI agent that builds your backlinks automatically across 2,000+ directories, forums and content platforms. Monitored for 90 days. Your first link is free.