Saturday, November 20, 2010

Disable DNS Suffix

If you are using WOW! Internet or your ISP has provided a "Domain Name" when your router gets it IP from the ISP's modem, all of your requests out of your computer will go to *.{domain name}. For instance, This is obviously not what you want your computer to be doing, so you can fix it in 2 ways.

The easiest is to just fix it on the router:

Just set the "Domain Name" to a period (.) and it will disable the domain name.
Then you need to RESET EVERY DEVICE on the network. If you don't it won't work.

If you don't have access to the router, then you can change it locally on your Windows computer.

  1. Goto Network Connections (or Network and Sharing Center then to Change Adapter Settings)
  2. Right click on your active connection (Probably Local Area Connection) and select Properties
  3. Select Internet Protocol Version 4 and click Properties
  4. Click Advanced
  5. Goto the DNS tab and make it look like this:
Once again, that being a period (.) as the domain name.


James Hartig


Brian Olsen said...

Thanks James, this post really helped me out. Not exactly the same issue but definitely the right resolution. Appreciate it!

danieldmu said...

2019 and this solved my problem! I was having trouble with a nexxt router (Nebula 300) that added a suffix to the windows connections, when I tried to ping other host in the local network the dns resolved an external host due to the dns suffix. Something like ping pc1 resolved to

I disable the dns suffix as explanied and the issue was gone.