Discover your IP address, location, country, and other network details. Access data via simple commands or JSON API. Free geolocation lookup.

Gratis online DNS lookup tool om nameservers, IP-adressen en MX records van domeinen te checken. Ook SMTP, WHOIS en IP-tests beschikbaar.

Online tool to check your IPv4 and IPv6 connectivity. Verify dual-stack address status and test internet protocol configuration.

Free WHOIS lookup tool to check domain availability and ownership details. Find registrant information for any domain name instantly.

Interactive game to learn and practice ISO 20022 address structuring standards. Designed for developers, bankers, and finance professionals.

Welster offers a WHOIS lookup service to check domain availability, ownership details, and registration information quickly and easily online.

Free WHOIS lookup tool to check domain availability and ownership details. Query domain information quickly and easily online.

Peppol Scanner lets you check your VAT or CBE registration status in the Peppol network. Enter your number to find where you're listed.