DNS Suffix Search List

  1. Posts : 1,388
    W10 21H2 19044.1387

    DNS Suffix Search List

    Was poking around this AM to see if my DNS server selection could be improved or if it was ok. After Running Gibson's DNSBench.exe several times, convinced me I was already on the "best" one (openDNS).

    When I did an IPconfig /all, I am looking at something that has puzzled me for a while and that is DNS Suffix Search List is listed as T-Mobile.com1?

    OpenDNS is set on my computer, as well as in the Wan DNS1/2 on the router. I am using a Tmobile/ASUS TM-AC 1900 and T-Mobile.com1 is listed as the router Domain name?

    Appreciate any clarity on this...Tx
    Attached Thumbnails Attached Thumbnails DNS Suffix Search List-tm.jpg  
      My Computers

  2. Posts : 4,224
    Windows 10

    If you have automatic DNS provisioning set up in your TCP/IP properties (see this article: http://compinfopro.com/dns-suffix-what-does-it-mean/) it's probably getting its initial DNS info/access through the router, and that's where the domain name and initial lookup is originating. That said, if it's working properly and you're happy with its performance and behavior, remember the old saying "If it ain't broke, don't fix it!"
      My Computers

  3. Posts : 1,388
    W10 21H2 19044.1387
    Thread Starter

    Tx ED, read the link twice will read it again until I can make some sense of it.
      My Computers

  4. Posts : 4,224
    Windows 10

    You're welcome. Hope it all starts making some kind of sense soon! If not, I wrote a TCP/IP textbook that I can recommend. It's now in it's 5th edition, so it must be OK.
      My Computers

  5. Posts : 1
    Win 10

    I'd like an update on this discussion. From the point of view of security and data leakage.

    I bought a computer from China, and the router from my internet provider, TELMEX, is from Huawei. I have a suffix pointing to Huawei.net. I would like to limit the amount of DNS queries that go to China, or for that matter Google, since you cannot be sure how they will mine the data these days.

      My Computer

  6. Posts : 5,216
    Windows 11 Home

    Just disable DNS Client (DNS Cache) service, it will take care of it, not to mention, it is vulnerable anyway.

    The Primary DNS Suffix is what the DNS Client Service (partly the DNS Dynamic Update Service) on the DC uses to register the AD information into DNS looking for a matching zone name, which is domainame( eg Contoso.com) zone. If this is missing, AD (specifically the netlogon service) can't regsiter its data into DNS.
    What is DNS cache poisoning? | DNS spoofing
      My Computer


  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 22:15.
Find Us

Windows 10 Forums