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NetInsight

The complete network, DNS, email & domain diagnostic platform for engineers who care about uptime and deliverability.

DNS

  • DNS Lookup
  • A Lookup
  • AAAA Lookup
  • MX Lookup

Email & Deliverability

  • SPF Lookup
  • DKIM Lookup
  • DMARC Lookup
  • DMARC Generator

Network

  • IP Lookup
  • ASN Lookup
  • Ping
  • Open Port Scanner

SSL / TLS

  • SSL Checker
  • SSL Expiry Checker
  • Certificate Decoder

Domain

  • WHOIS Lookup
  • Domain Age
  • Blacklist Check
  • Domain Health Score

Web

  • HTTP Header Check
  • Security Headers
  • Website Availability
  • Robots.txt Checker

Legal

  • Privacy Policy
  • Terms & Conditions
  • Cookie Policy
  • Disclaimer
  • Acceptable Use
  • GDPR
  • API Terms
  • Responsible Disclosure

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Diagnostics are provided for informational purposes only. See our disclaimer.

Diagnostic tools

Every check in one place. Filter by category or search by name.

Domain

WHOIS Lookup

Registration, registrar and nameserver details.

Domain

Domain Age

How long a domain has been registered.

Domain

Blacklist Check

Test an IP or domain against DNSBLs.

Domain

Domain Health Score

Aggregate DNS, email and SSL into one score.