DNS Lookup
Check A, AAAA, MX, NS, TXT, CNAME and more using Google/Cloudflare/Quad9 DNS.

DNS Lookup / DNS Checker

Enter a domain name or valid URL. Choose a DNS server and record type. Results include Answer + Authority/Additional (if provided).

Free Tool • Sync Soft Solution
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Enter a domain and click “Lookup DNS”.
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DNS Lookup Online – Check DNS Records Instantly
This DNS checker helps you verify domain configuration for website, email, and security setup. Use MX to confirm email routing, TXT for SPF/DKIM/DMARC, A/AAAA for IP mapping, CNAME for subdomain pointing, and CAA/DNSKEY/DS for security records.

DNS Checker (DNS Lookup Tool) – Check A, AAAA, CNAME, MX, TXT, NS & More

Use the DNS Checker by Sync Soft Solution to perform a fast, accurate DNS lookup for any domain. This tool helps you verify essential DNS records like A, AAAA, CNAME, MX, TXT, NS, SOA, as well as advanced security records like CAA, DS, and DNSKEY. If your website is not loading, email is failing, or SSL is not issuing correctly, a DNS check is usually the first step.

What you can do with this DNS Checker

  • Check A / AAAA record to confirm the domain points to the correct IPv4/IPv6 address.
  • Check CNAME record to validate subdomain mapping (www, blog, app, admin, etc.).
  • Check MX record to fix email delivery issues and confirm the correct mail provider.
  • Check TXT record for SPF, DKIM, DMARC, Google Site Verification, and other verification strings.
  • Check NS record to confirm the authoritative nameservers for your domain.
  • Check SOA record to verify serial and zone authority details.
  • Check CAA record to control which Certificate Authorities can issue SSL for your domain.
  • Check DS / DNSKEY for DNSSEC configuration validation.
  • Use ALL to run a complete DNS audit for quick troubleshooting.

DNS servers supported (Why it matters)

DNS records may appear different depending on the DNS resolver cache and propagation time. That’s why this tool allows you to choose multiple DNS servers (like Google, Cloudflare, Quad9, and more) to compare results and confirm what users may see globally.

Common DNS problems this tool helps you fix

Website not opening

Check A/AAAA for the correct server IP and verify CNAME for www/subdomain mapping.

Email not receiving / sending

Check MX and confirm SPF/DKIM/DMARC in TXT records for better email deliverability.

SSL certificate issue

Validate CAA records and ensure DNS points to the correct hosting/CDN before SSL issuance.

DNSSEC verification

Check DS and DNSKEY to confirm DNSSEC is configured correctly and consistent.

How to use the DNS Lookup tool

  1. Enter your domain name (example: syncsoftsolution.com).
  2. Select a DNS server (Google, Cloudflare, Quad9, etc.).
  3. Choose record type: A, MX, TXT, or click ALL for a full check.
  4. Click Lookup DNS to see Answer, Authority, and Additional sections.
  5. Use Show Raw for debugging and development.

DNS Checker FAQs

What is a DNS record?

A DNS record is a set of instructions stored on DNS servers that tells the internet where to find your website, email server, or services. Examples include A record (IP address), CNAME (alias), MX (mail), and TXT (verification/security).

Why do DNS changes take time?

DNS propagation depends on TTL (Time To Live) and resolver caches. Some users may see old records until the cache refreshes. Checking multiple resolvers helps you confirm what’s visible in different locations.

Which DNS record is most important for a website?

Usually A (IPv4) or AAAA (IPv6) records are the most important because they point your domain to the server IP. If you’re using a CDN, you may also rely on CNAME records.

How do I fix email not receiving?

Verify MX records point to your correct email provider. Then check TXT records for SPF/DKIM/DMARC. Incorrect DNS often causes email delivery failures.

Need help fixing DNS, website issues, SEO, or performance? Contact Sync Soft Solution: WhatsApp 8750347699.

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