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

You are not logged in. You can still use these utilities, but your number of queries per day will be limited. Some of these utilities such as the register a name server utility can only be used by logged in users. If you are not registered, please consider supporting the free use of these utilities by using our other services. You can sign up for a free account here.

*7th July. 2011 Web server headers check added
*7th July. 2011 DNS Query estimator added
*16th Nov. 2010 DNS Propagation test added
*25th Jan. 2010 SPF domain test added

Ping Utility
Domain Name or IP
Number of Ping Packets to Send
 
DNS Lookup Utility (including zone transfer)

Host address

Server to query
Test if common ports are open (SMTP, POP3, HTTP(s), DNS)
Host to check
 
Check status of name server with NSI (com/net/org only. Domain must be held here and unlocked - must be logged in)
Name server
WHOIS lookup
Domain name www.
 
Register a name server (domain must be held here and unlocked - must be logged in)
Host name
IP
EMail test - Checks MX records and mail servers
your email address
 
Open relay test
Mail server name or ip
IP Geolocation
IP to check
 
SPAM - Check to see if an IP address is on any common blacklists
IP address to check
EMail virus filter test - Sends the harmless eicar text string
your email address
 
Test domain SPF record
Domain name
DNS Server IP
Sending IP
Global DNS Propagation check - Checks public dns servers to see if your dns change has propagated (A records only)
Host name
 
DNS query estimator - guesses an approximate level of dns queries for your domain name.
Domain name www.
Unique daily page views
Number of email accounts
Get web server headers
Host name
Follow redirect
   

 

Please be patient, some of the results may take several seconds to display. Results will open in a new window..

Some other useful utilities

SPF record generator
Windows command line SPF checker (download)
Email virus test page (sends Eicar test virus)