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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.

Network

IP Lookup

Geolocation, ASN and network owner for an IP.

Network

ASN Lookup

Look up an autonomous system number.

Network

Ping

Measure round-trip latency to a host.

Network

Open Port Scanner

Check common TCP ports on a host.

Network

GeoIP Lookup

Approximate the location of an IP address.