Resolve A, AAAA, MX, TXT, NS, and CNAME records for a domain from the API host.
- Free
- No signup
- Fast
- Privacy-friendly
Free · API · MCPToolYour platform
Use DNS Lookup three ways
The free DNS Lookup on this page works in your browser. The same workflow is available via REST API for apps and via MCP for Cursor, Claude, and other agents — one API key, one plan, one quota. This tool is part of the security-apis module under Security Tools.
- Free in browserUse DNS Lookup here — no account required.
- REST APICall from your server with
X-Api-Key. - MCP for agentsConnect Cursor or Claude to ToolYour MCP with the same key.
- 1. Get an API keySign in and open Dashboard → API Keys (works for REST and MCP).
- 2. Call or connectUse the REST API from your server, or paste the MCP URL into your agent config.
- 3. Same qualityOutput matches the free web tool across all three surfaces.
What is DNS Lookup?
Enter a domain or URL to resolve A/AAAA/MX/TXT/NS/CNAME. Public DNS from the API host — not DNSSEC validation. Pair with SPF/DKIM/DMARC Checker for email auth. REST/MCP: /api/v1/security-apis/dns-lookup.
What are common questions about DNS Lookup?
What does DNS Lookup do?
Resolve A, AAAA, MX, TXT, NS, and CNAME records for a domain from the API host.
Is this available via API and MCP?
Yes. Same route under /api/v1/security-apis/{slug} with one ToolYour API key and shared credits.
What are the key features of DNS Lookup?
Browser + API
Run in the browser or via REST/MCP.
Structured report
JSON-friendly output for agents and dashboards.
How do you use DNS Lookup?
Open the tool
Use the Security Tools category page.
Provide input
URL, domain, or pasted text as required.
Review findings
Fix high-severity items first.
Where do you browse more security tools tools?
- Security Tools tools
Browse the full Security Tools category on ToolYour.
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PII scrub, resume match, transcription, video summarize, and YouTube analysis. Free in the browser; API-backed
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Convert PDF↔Word, compress images, and change formats online. Free in browser · REST · MCP. No signup for typi
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