Tools

Your current IP and WHOIS. Private/link-local detection.

A, AAAA, MX, TXT, NS, CNAME, SOA for a hostname or domain.

Query public WHOIS for a domain or IP. Rate limited.

Ping a hostname or IP from the server. Round-trip times, packet loss.

SSL/TLS certificate: issuer, validity, SANs, fingerprint.

Send a test email; get SPF, DKIM, DMARC and a score. Report downloadable.

Check if an IP, hostname, domain or email is on public RBLs.

Paste raw headers to view From, To, Received, SPF, DKIM. Nothing stored.

Measure DNS, connection, TTFB and total time for a URL. With rating.

Ping, download and upload between your device and this server (~15–20 s).

Enter a URL; see third-party resources and cookies in the HTTP response.

Generate segmented passwords. Configurable segments, separator, character sets.