Check ability to resolve domain names

Following instruction on this page you can test if your host can resolve domain names (such as patientsknowbest.com) to an IP address.

On the machine that runs the service run below command:

nslookup my.patientsknowbest.com

The command will query a name server for our address. Which name server is picked depends on the confguration of your system/network.

TIP: Run:

  • nslookup my.patientsknowbest.com sonia.ns.cloudflare.com or

  • nslookup my.patientsknowbest.com shane.ns.cloudflare.com

to query one of the authorative nameserver for patientsknowbest.com.

Expected success output

Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: my.patientsknowbest.com Address: 35.246.122.93

The Address: 35.246.122.93bit indicate that the domain name can can be resolved to an IP address.

Expected failure outputs

Time out

nslookup my.patientsknowbest.com ;; communications error to 127.0.0.53#53: timed out

Missing record

Missing domain