DNS Lookup Online
Query all DNS records of any domain: A, AAAA, MX, TXT, NS, CNAME, SOA. Real-time results via Cloudflare. No sign-up.
Built by
Miguel Ángel Colorado Marin (MACM)
Built by
Miguel Ángel Colorado Marin (MACM)
Full-Stack Developer · Guadalajara, España
I develop web apps, digital tools and full projects — from design to deployment.
How to use the DNS Lookup?
- 1
Enter the domain
Type the domain you want to query (e.g. example.com). No need to include https://.
- 2
Click Analyze
The tool queries A, AAAA, MX, TXT, NS, CNAME and SOA in parallel via Cloudflare DNS-over-HTTPS.
- 3
Expand Infrastructure
DNS records appear in the Infrastructure section. You'll see each type grouped with its value and TTL.
- 4
Diagnose
Verify MX for mail, TXT for SPF/DKIM, NS for nameservers and A for the server IP.
Frequently asked questions
What are DNS records?
DNS records map domain names to resources. A points to IPv4, AAAA to IPv6, MX to the mail server, TXT stores free text (SPF, DKIM, verifications), NS indicates authoritative nameservers, CNAME is an alias and SOA contains zone information.
What is an MX record for?
The MX record specifies which mail server receives emails for that domain. Without a valid MX, mail won't be delivered. Multiple records with different priorities can exist for redundancy.
What is a TXT record?
TXT stores free text. Its uses: SPF (indicates which servers send mail), DKIM (public key), DMARC, ownership verifications (Google Search Console, Cloudflare) and BIMI.
How long does a DNS change take to propagate?
It depends on the TTL. With a TTL of 3600s, changes can take up to 1 hour to propagate. With a low TTL (300s), changes are visible in minutes.
What is the difference between CNAME and A?
The A record directly maps a name to an IP (example.com → 1.2.3.4). CNAME is an alias pointing to another name (www.example.com → example.com). CNAMEs cannot coexist at the domain apex with other records.
Is it legal to query any domain's DNS?
Yes. DNS records are public data by design — any device connected to the Internet needs to query them to function. Tools like nslookup, dig or Google Public DNS make exactly the same query. We don't access any private system or perform any intrusive action.
Embed this tool
Integrate the DNS Lookup in your blog or website:
<iframe src="https://miguelacm.es/embed/dns-lookup" width="100%" height="700" style="border:none;border-radius:12px;" loading="lazy"></iframe>
Source code available on GitHub.
View on GitHub