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DNS	PING	TRACEROUTE	WHOIS
Into DNS	Online Ping Test	Traceroute Web	Whois Lookup
DNS Checker	Free Ping Test tool	Traceroute Test	ICANN Lookup
Whats My DNS?	Ping IPv4 Address	Visual Traceroute	Nominet Lookup
MX Toolbox DNS	DIG	PORTS	Root Zone Database
Indpendent DNS Tool	DIG Web GUI	Shields Up!	GEO IP
Reverse DNS Check	Google DIG Tool	Port Checker	IP Location Finder
NS Lookup Tool	DIG Web Interface	Port Forward Test	Geolocation Lookup

DIAGNOSTICS
https://www.checktls.com/TestReceiver	Email To Test Receiver
https://www.checktls.com/TestSender	Email From Test Sender
https://www.debouncer.com/blacklistlookup	Email Reputation Check
https://www.ip2location.com/free/email-tracer	Email Header Tracer
https://www.dnsbl.info/dnsbl-database-check.php	Spam Database Lookup
https://www.spamcop.net/bl.shtml	SpamCop List Check
https://mxtoolbox.com/blacklists.aspx	MX Blacklist Check
https://check.spamhaus.org	Spamhaus List Check

URL	DESCRIPTION
https://www.netmeter.co.uk	Broadband Speed Test
https://speedof.me	Speed of Me
https://openspeedtest.com
https://www.speedtest.net
https://speed.cloudflare.com
https://broadbandtest.which.co.uk
https://www.uswitch.com/broadband/speedtest
https://www.bandwidthplace.com
https://www.broadbandspeedchecker.co.uk
https://speedtest.net.uk
https://fast.com/en/gb
https://www.vodafone.co.uk/broadband/speed-test
https://www.speedtest.net
https://www.ispreview.co.uk/speed/#1