DNS Lookup Checker for public DNS visibility
Look up public DNS records for a domain or subdomain, review TTLs, nameservers, mail records, TXT values, SPF, DMARC, DKIM selector checks and rule-based DNS health hints.
A–CAA
common DNS record types
SPF + DMARC
email DNS hints
TTLs
resolver context shown
DNS Lookup Checker
Look up public DNS records for a domain and review TTL, nameserver, mail, and TXT details.
Domain
Enter a root domain or subdomain.
Use a domain or subdomain only. Example: example.com or mail.example.com.
Choose the DNS record type you want to check.
Lookup settings
Keep public checks lightweight while still showing useful DNS context.
Include related DNS context
Also fetch NS, MX, and TXT records when available.
Detect SPF and DMARC hints
Highlight common TXT-based email authentication records.
Show raw values
Include copyable raw DNS values in results.
Free public checks use public DNS data and may reflect resolver cache.
Free public checks are limited to 3 uses/day. CAPTCHA may appear for protection. 0 / 3 used
Inspect public DNS records with practical context
Wranker focuses on visible DNS answers, related nameserver and mail context, and rule-based hints that support technical SEO and troubleshooting workflows.
Use it during internal linking audits, content optimisation, technical SEO reviews, website migrations and content hub planning.
Public DNS record checks
Inspect common record types including A, AAAA, CNAME, MX, TXT, NS, SOA and CAA for a domain or subdomain.
MX, SPF, DMARC and DKIM context
Review mail hosts and email authentication hints, with selector-based DKIM checks when a selector is provided.
Nameservers, TXT values and TTLs
Include related NS, MX and TXT context so technical SEO teams can understand more than the selected record alone.
Rule-based DNS health observations
Surface public-safe hints for missing records, multiple SPF values, missing DMARC, low TTLs and nameserver availability.
Keep websites, email and verification workflows resolving clearly
DNS records connect your domain to websites, mail servers, verification services and security systems. Incorrect records can cause downtime, email delivery issues, failed verification, SSL issuance problems and troubleshooting delays.
Avoid routing surprises
Confirm public DNS visibility before website launches, migrations, redirect work or technical SEO QA.
Reduce email setup delays
Review MX, TXT, SPF, DMARC and DKIM selector records before handoff to IT, developers or email platforms.
Document what resolvers see
Use visible records, TTLs, resolver status and raw data as a practical troubleshooting snapshot.
From hostname to DNS lookup setup in four focused steps
The public workflow stays intentionally simple: enter the host, select the record type, enable related context and open the lookup output for review.
Enter a domain or subdomain
Use example.com, www.example.com, mail.example.com or _dmarc.example.com. Full URLs are normalised where possible.
Choose the record type
Select A, AAAA, CNAME, MX, TXT, NS, SOA or CAA depending on the DNS question you need to answer.
Add related context
Enable nameserver, mail, TXT, SPF, DMARC, TTL or DKIM selector context for a wider troubleshooting view.
Run the lookup
Submit the check and review records, health hints and raw DNS data in the dashboard-style output.
DNS checks for launch, migration and email QA without noisy diagnostics
Use the DNS Lookup Checker when you need a fast public view of DNS visibility before SEO audits, domain changes, email setup or technical handoff.
Technical SEO specialists
Review DNS records before migrations, launches, SSL troubleshooting and technical SEO audits.
SEO agencies
Add DNS visibility checks to client QA workflows and technical handoffs without exposing private diagnostics.
Developers and IT teams
Verify DNS changes, record values, TTLs and email authentication hosts during implementation.
Marketing and website teams
Check verification TXT records, campaign landing page domains and mail readiness before launch.
Continue the technical SEO workflow with Wranker
Pair DNS checks with SSL validation, header inspection, hosting context and redirect path reviews.
SSL Certificate Checker
Check SSL validity, expiry and certificate chain after DNS resolves correctly.
OpenHTTP Header Checker
Inspect response headers and status codes once the domain routes to a website.
OpenDomain Hosting Checker
Review hosting and domain infrastructure details for technical SEO context.
OpenURL Redirect Path Checker
Check redirect chains and final destinations after DNS and SSL are working.
Questions about DNS lookup checks answered clearly
A practical reference for record types, subdomain checks, SPF, DMARC, DKIM selectors and export expectations.
A DNS Lookup Checker is a tool that looks up public DNS records for a domain or subdomain. It can show record values, TTLs, nameservers, mail records, TXT records and DNS health hints.
You can check common DNS record types such as A, AAAA, CNAME, MX, TXT, NS, SOA and CAA.
Yes. The tool supports root domains and subdomains such as www.example.com, mail.example.com or _dmarc.example.com.
An A record maps a domain or subdomain to an IPv4 address.
An MX record tells mail systems which mail servers should receive email for a domain.
A TXT record stores text values used for verification, SPF, DMARC, DKIM and other services.
Yes. The tool can detect SPF records from TXT values and check DMARC at the expected _dmarc host where supported.
Yes, but DKIM requires a selector. Enter the DKIM selector in Advanced settings to check a host such as selector1._domainkey.example.com.
DNS results can vary because of resolver cache, propagation timing, TTLs, DNS provider behaviour and geographic resolver differences.
Yes. Public exports may include CSV, PDF, JSON and TXT. You can also copy records, raw DNS data and SPF/DMARC summaries where available.
Build better technical SEO workflows with DNS checks
Verify DNS records, nameservers, mail hosts, TXT values, SPF, DMARC and rule-based DNS health hints. For deeper workflows, connect DNS checks with SSL, headers, redirects and technical SEO reporting inside Wranker.