Diagnostics
DNS lookups, WHOIS, and connection details.
Your Connection
Status
Loading...
Enter a domain, choose a record type, and press Lookup.
Enter a domain to check MX, SPF, DKIM, and DMARC.
—
ms
Latency
—
ms
Jitter
—
Mbps
Download
—
Mbps
Upload
Press Run Test to begin. Takes ~30 seconds for accurate results.
Enter a domain and press WHOIS.
Enter a domain to inspect its SSL certificate.
Enter a URL to check HTTP response headers and security posture.
Enter a host to scan common ports.
Enter an IP or domain to check against 20+ spam blacklists.
Enter an IP address or domain to look up geolocation and ASN info.