Diagnostic Site Links

Links to useful diagnostic web sites: 

   

Internet

 

BT Broadband availability checker

Check a BT telephone line for availability of broadband services.

Speedtest.net

Online Internet speed test web site

Nominet WHOIS Lookup

Look up details for .co.uk domain names

Mark Monitor Allwhois

Look up details for almost any domain name

 

 

PlusNet Service Status

 

PlusNet ADSL Service Notices

 

PlusNet ADSL Gateway Checker

 

   

MTU Ping Test

Check MTU - Requires ICMP on Router WAN

GRC DNS Benchmark

Download - tests local DNS performance

GRC Inspectre Utility

Download - Checks for slow performance due to Inspectre and Meltdown patches

   

MailRadar Open SMTP Mail Relay test

Check an SMTP server is not an open mail relay.

MX Toolbox SMTP Server Check

SMTP Configuration Checks

   

MX Toolbox DMARC Record Check

MX Toolbox DMARK Record information

SPF-DKIM-DMARC Record Checker

Check SPF, DKIM and DMARC Records for a domain

   

Have I been pwned

Check for email addresses in known data breaches

   

Kaspersky Anti-Virus Utilities

Specialised utilities to remove specific Virus and Rootkit infections.  Use with care!