OpenDNS Troubleshooting

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So every now and then, I will notice that our OpenDNS service will not be blocking queries. I usually perform the following steps to resolve.

To Resolve:

  1. Login to each DNS server and “Clear DNS Cache”, then wait 5 minutes.

  2. Pull up a command prompt and type:

netsh interface ip show dns
nslookup -type=txt
  1. Go to

  2. Go to test blocked site: