Get comprehensive DNS analysis for any domain. Enter a domain like nvidia.com or openai.com to discover DKIM selectors, analyze MX server locations, and audit email authentication.
Advanced DNS Lookup goes beyond basic record queries. It discovers DKIM keys (which aren't publicly listed), resolves mail server hostnames to IP addresses with geolocation, and provides AI-powered analysis of your domain's DNS configuration.
When you submit a domain, we perform multiple layers of DNS analysis. First, we query standard DNS records (A, AAAA, MX, TXT, NS, SOA, CNAME). Then we extract and analyze email authentication records (SPF from TXT, DMARC from _dmarc subdomain).
DKIM Discovery: Since DKIM selectors aren't standardized, we test common patterns (google, selector1, selector2, default, dkim, s1, s2, etc.) to find which DKIM keys are configured. This is why advanced lookup takes longer.
MX Analysis: For each MX record, we resolve the hostname to its IP addresses and use IP geolocation to determine where mail servers are physically located.
Advanced DNS Lookup goes beyond basic record queries. It discovers DKIM selectors (which aren't publicly listed), resolves MX server hostnames to IP addresses, provides geolocation data, and gives you comprehensive email authentication analysis.
DKIM selectors aren't standardized or publicly listed. We test common patterns used by major email providers (google, selector1, selector2, default, dkim, etc.) to discover which DKIM keys are configured. This adds 30-60 seconds to the lookup.
Knowing where your mail servers are geographically located helps with compliance (data residency), latency optimization, and security audits. We resolve MX hostnames to IPs and use geolocation to show each mail server's country and region.
DKIM selector discovery requires testing multiple possible selectors, and MX IP resolution requires additional DNS queries for each mail server. Comprehensive analysis takes 30-60 seconds versus instant results from basic lookup.
Use Advanced DNS Lookup when auditing email authentication, investigating deliverability issues, or need DKIM and detailed MX analysis. Use basic DNS Lookup when you just need quick access to common DNS records.
DNS Explorer — Run bulk DKIM, SPF, and DMARC lookups across thousands of domains. Built for security teams, MSPs, and IT administrators who need to audit email authentication configurations across their entire domain portfolio.
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