I actually tried using NextDNS, a secure and customizable DNS service that Firefox partnered with


I actually tried using NextDNS, a secure and customizable DNS service that Firefox partnered with

Firefox is newAnnounced partnershipSafe and customizable DNS serviceNextDNS”Was available, so I tried using it in Firefox in addition to Windows, iOS, Android, and other devices.


◆ NextDNS usage registration
◆ Windows version settings
◆ iOS version settings
◆ Android version settings
◆ Firefox version settings

◆ NextDNS usage registration

Let's actually use NextDNS. FirstOfficial pageAnd click "Try it now for free".

Then, the automatically assigned ID and your IP address will be displayed.

Among them, the 6-digit number and alphabet displayed as “ID” is “Configuration ID”. You will need it when linking each device to an account.

When you scroll the page, “How To Setup” shows how to set up each device such as Android, iOS, Windows.

From the upper tab, you can access various functions installed in NextDNS. In "Lists", you can set whether to prohibit access to sites such as pornography, gambling and social networks.

In "Services", you can restrict each application such as Facebook and WhatsApp.

In "Analytics", the analysis result of the access using NextDNS is displayed.

It is also possible to know the details of specific access in "Logs".

In order to use detailed individual settings, it is necessary to log in to NextDNS. Click “Sign up” on the home screen to enter the new account creation screen. Enter your email address and password for NextDNS, and click “Sign up” to complete the account creation.

NextDNS can be used on Windows, iOS, Android, Firefox, macOS, Linux, Chrome OS, router, etc., but this time we will try using NextDNS on Windows, iOS, Android and Firefox.

◆ Windows version settings

NextDNSGoogle Public DNSYou can also set from "Display network status and tasks" as in, but you can also set in the official app. This time, I will try using the official app written as "Recommend (recommended)". First of all, in “How To Setup” on the URL to download the NextDNS Official App.

Launch the downloaded "NextDNSSetup-1.0.12.exe" by double-clicking.

The installer will start, so click “Next”.

Click “I Agree” to accept the license agreement.

Specify the installation directory and select “Install”.

When the pop-up “Do you want to install this device software?” Appears, click “Install”.

The installation will start and end. Click “Finish” to complete the installation.

Then the application starts up and “Settings” is displayed, so enter your ID in “Configuration ID” and click “Save”.

Task trayRight-click on the NextDNS icon and select "Enable" to enable NextDNS.

◆ iOS version settings

You can download NextDNS for iOS from the following.

“NextDNS” on the App Store

Access the above iOS NextDNS store page and tap “Get”.

Tap “Install” to start downloading and installing automatically.

After installation is complete, tap “Open” to start NextDNS.

You can tap the center toggle bar to use only basic functions, but this time we will follow the official instructions. Tap the “…” icon at the bottom.

Turn on the “Use Costom Configuration” toggle bar.

Enter the Configuration ID.

Return to the app home screen and tap the center toggle bar.

When the privacy policy is displayed, tap “Continue” to agree.

Tap “Allow” to allow NextDNS operation.

Enter the passcode required.

If "Enabled" is displayed below the toggle bar, NextDNS is enabled.

According to the settings screen,LatencyIs "21ms". In addition, "Hardened Privacy Mode" that connects only to servers protected by strong privacy laws, "Require Passcode" that requires a passcode when starting an application, "EXCLUDED WI" that adds Wi-Fi that does not use NextDNS -FI NETWORKS "and other settings were possible.

◆ Android version settings

NextDNS for Android can be downloaded from the following.

NextDNS-apps on google play

Tap “Install” to complete downloading and installation automatically.

Tap “Open” to launch the app.

You can tap the toggle bar in the center to use only basic functions, but this time tap the gear icon on the bottom.

Tap the “Use Custom configuration” toggle bar.

Enter your Configuration ID and tap OK.

Return to the home screen of the app and tap the center toggle bar.

Since "Connection request" is displayed, tap "OK" to allow NextDNS.

If “CONNECTED” is displayed under the toggle bar in the center of the home screen, NextDNS is enabled.

From the settings screen, settings such as "Hardened Privacy Mode" that connect only to servers protected by strong privacy laws were possible, but there was no function such as latency display that existed in the iOS version.

◆ Firefox version settings

NextDNS can also be applied to Firefox. Click the three-line icon in the upper right and select “Options”.

Select "Advanced Settings" in the network settings.

Check “Enable DNS over HTTPS” and set “Use Provider” to “Specify URL”. Enter " Configuration ID)" in "Specify URL" and click "OK".

Type "about: config" in the address bar and press Enter. Click “Use with knowledge of danger” on the displayed page.

Enter "network.trr.bootstrapAddress" in the search field and double-click the displayed result. Then the text entry field will be displayed, so enter “” and click “OK”.

Similarly, enter “network.trr.mode” in the search field and double-click the displayed result. Enter "3" in the input field and click "OK" to complete the setting.

NextDNS allows you to set the country through which traffic passes and the period for retaining logs. In the future, the price will be "Free for up to 300,000 DNS queries per month, $ 1.99 per month for more queries (about 220 yen)", but the beta version can be used free of charge.

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