These network utilities are provided by CloudfloorDNS, providers of high quality dns and domain management services.

• Ping Utility
• DNS Lookup Utility (including zone transfer)
• Test if common ports are open (SMTP, POP3, HTTP(s), DNS)
• Check status of name server with NSI
• WHOIS lookup
• Register a name server
• EMail test - Checks MX records and mail servers
• Open relay test
• IP Geolocation
• SPAM - Check to see if an IP address is on any common blacklists
• EMail virus filter test - Sends the harmless eicar text string
• Test domain SPF record
• Global DNS Propagation check - Checks public dns servers to see if your dns change has propagated (A records only)
• DNS query estimator - guesses an approximate level of dns queries for your domain name.
• Get web server headers