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How to Tell If You May Have a DNS Problem

Troubleshoot cases where internet connectivity exists but website names fail to resolve.

Quick Answer

Test multiple sites/devices, restart the network, and compare whether direct network connectivity works while domain-name lookups fail.

Step by Step

  1. Determine whether the problem affects one device or every device on the network.
  2. Test multiple sites/devices, restart the network, and compare whether direct network connectivity works while domain-name lookups fail.
  3. Change one setting or component at a time and test again.
  4. Record existing router/network settings before changing passwords, DNS, addressing, or advanced configuration.

If That Doesn't Work

  • Router menus, indicator lights, and terminology vary by manufacturer and internet provider.
  • Avoid factory-resetting a modem/router unless you know how it is provisioned and have the information needed to restore the connection.