Find all sites hosted on a given server.

Find domains owned by an individual or company.

Show historical IP addresses for a domain.

Provides a complete report on your DNS settings.

Find all known subdomains for a domain.

Find all sites that use a given nameserver.

Find the geographic location of an IP Address.

Checks whether a site is accessible from China.

Check whether recent DNS changes have propagated.

Check whether a site is down for everyone or not.

Find all sites that use a given mail server.

Get detailed WHOIS information for a domain.

View the HTTP headers returned by a domain.

View all DNS records for a specified domain.

Check if common ports are open on a server.

Trace the servers between ViewDNS and a remote host.

Determine if your mail server is on any spam blacklists.

View the reverse DNS (PTR) entry for an IP address.

Checks whether a site is accessible from Iran.

Ping a server from multiple locations worldwide.

Test if any domain name is configured for DNSSEC.

Convert a URL with '%##' values to a readable format.

Find the abuse contact address for a domain name.

Determine the manufacturer of a network device.

Determine if a domain provides free email addresses.

Lookup details on an Autonomous System Number.