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Setup Tutorials

How to Find Out if Your ISP is Doing Transparent DNS Proxy

In this tutorial we will show you have to find out if your ISP (Internet Service Provider) is doing Transparent DNS Proxy.

Wondering what is Transparent DNS Proxy? Some ISP’s are now using this technology to intercept all DNS lookup requests (TCP/UDP port 53) and transparently proxy the results. This effectively forces you to use their DNS addresses and you are not able to change them. This way you will not be able to use the Smart DNS service.

The process differs for Windows and macOS, so please choose your OS:

  1. Enable Smart DNS using the CactusVPN app or set up Smart DNS manually.

  2. Open the Command Prompt by pressing Windows + R on your keyword, type cmd and press Enter.

  3. In the Command Prompt type:
    nslookup ip.cactusvpn.com and press Enter.

    The answer you will get should look like this, but might differ a little depending of DNS country you selected:

    Transparent DNS proxy Test: Step 2

    If the result next to second “Address” (1) is 69.162.113.194, you have no problems and our DNS servers work well on your computer.

    In case you have another result go to Step 4.

  4. In the Command Prompt type:
    nslookup ip.cactusvpn.com 87.117.205.40 and press Enter.

    The answer you will get will look like this:

    Transparent DNS proxy Test: Step 1

    If for “Address” (2) you get an IP address different than “69.162.113.194″ then your Internet Service Provider is doing Transparent DNS Proxy.

    In this case, the only solution is to follow our tutorial for bypassing Transparent DNS Proxy with a DD-WRT router.

  1. Enable Smart DNS using the CactusVPN app or set up Smart DNS manually.

  2. Go to “Utilities” and open the “Terminal” app.

  3. In the Terminal app type:
    nslookup ip.cactusvpn.com and press Enter.

    The answer you will get should look like this, but might differ a little depending of DNS country you selected:

    Transparent DNS proxy Test: Step 2

    If the result next to second “Address” (1) is 69.162.113.194, you have no problems and our DNS servers work well on your computer.

    In case you have another result go to Step 4.

  4. In the Terminal app type:
    nslookup ip.cactusvpn.com 87.117.205.40 and press Enter.

    The answer you will get will look like this:

    Transparent DNS proxy Test: Step 1

    If for “Address” (2) you get an IP address different than “69.162.113.194″ then your Internet Service Provider is doing Transparent DNS Proxy.

    In this case, the only solution is to follow our tutorial for bypassing Transparent DNS Proxy with a DD-WRT router.

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