What is a DNS query?

What is a DNS query?

Whenever your device needs to connect to a server on the Internet, it needs to turn a domain name into a string of numbers called an IP address.

To do this, it sends a DNS request, usually to your Internet service provider (ISP), without you noticing.

Weaknesses of the DNS

Weaknesses of the DNS

The problem is that DNS queries can be censored by your ISP, either at the behest of the government or at its discretion.

Your ISP can also look at all your DNS queries to see which sites you visit and analyse your online behaviour and habits.

Circumventing censorship

Circumventing censorship

With our DoH (DNS-over-HTTPS) service, you can encrypt your DNS queries to prevent your ISP from viewing or modifying them.

On our side, we receive your requests, decrypt them, resolve them ourselves and send you the answer to your request in encrypted form.

Easy to install

Once the service is installed, you don’t have anything else to do: your requests will be automatically processed by our service, no further configuration is required.

Our commitments

We do not apply any form of censorship to DNS requests.

We do not store the content of your requests: we limit ourselves to connection logs that we delete after 14 days.

It's a free service

This service is available free of charge and without registration.

By using it, you accept our Terms of Use without condition.

Follow this simple guide to configure DoH on your device, depending on your browser.

Configure DoH

Since Firefox 114

  • Go to the Firefox settings (Edit -> Setings or write about:preferences in the address bar in a new tab).
  • Select the “Privacy & Security” panel and scroll to the “DNS over HTTPS” section
  • Choose “Increased Protection” or “Max Protection” and set the Provider as “Custom”
  • Enter the following URL: https://doh.lacontrevoie.fr/dns-query

Before Firefox 114

Go to the Firefox settings (Edit -> Setings or write “about:preferences” in the address bar in a new tab), then search for “dns”:

Configuration de Firefox

Click on “Settings”. Then, at the bottom of the window, check “Enable DNS via HTTPS”. In the drop-down menu, select “Custom” and enter the following URL: https://doh.lacontrevoie.fr/dns-query

Configuration de Firefox

Enter chrome://flags/#dns-over-https in your address bar.

Enable the corresponding setting, then enter the URL of a custom DoH resolver: https://doh.lacontrevoie.fr/dns-query

That’s it! Now your browser will use our DoH.

Separator with the association logo
Logo of the association La Contre-Voie

We maintain this service for you

This service is maintained by La Contre-Voie, a non-profit association recognized of general interest. We ensure daily the proper functioning of this service.

However, we don’t have the financial resources of Google (we do not sell your data!) and if most of our services are free for you, they are not for us: their maintenance requires a personal and financial investment.

We cannot survive without your support. To help us, you can make a donation or join the association.