Configure Vivaldi for Secure DNSaaS

📋 Overview

Vivaldi includes built-in support for DNS-over-HTTPS (DoH) under the Network settings. This guide will help you configure Vivaldi to use our secure DNSaaS service with token-based authentication.

Service	Endpoint	Authentication
Primary DNS	`https://dns1.oss.co.za/xxxxx{?dns}`	Token in URL path
Protocol	DNS-over-HTTPS (DoH) • Port 443 • TLS 1.3
Vivaldi Version	Version 6.0+ (all recent versions)

💡 Vivaldi DNS Settings Location Important: Vivaldi's DNS settings are in Network, NOT in Privacy & Security! Vivaldi uses the {?dns} format (like Chrome).

🔷 Configure Vivaldi Step-by-Step

1 Open Vivaldi Settings

Click the Vivaldi menu (red "V" icon in the top-left corner) → select Settings.

Alternatively, type vivaldi://settings/ in the address bar and press Enter.

💡 Tip The Vivaldi menu is the red "V" in the top-left corner of the browser window.

2 Navigate to Network

In the left sidebar, scroll down and click Network.

                Red "V" menu →
                Settings →
                Network →
                DNS Over HTTPS
            

⚠️ Common Mistake

Wrong: Going to Privacy & Security (this is for Chrome-like settings).

Correct: Go to Network in the left sidebar!

3 Find "DNS Over HTTPS"

In the Network section, look for "DNS Over HTTPS".

Enable "Use a secure connection to look up site IP addresses".

4 Enable DNS Lookup Over HTTPS

Toggle "Enable DNS Lookup Over HTTPS" to ON.

Select "Custom DNS Provider" from the dropdown.

5 Enter the Custom DoH Endpoint

Enter the following URL (replace token_testclient123 with your token):

https://dns1.oss.co.za/testclient123{?dns}

⚠️ Important: Vivaldi uses {?dns}

Correct: https://dns1.oss.co.za/testclient123{?dns}

Wrong: https://dns1.oss.co.za/testclient123?dns ← Edge/Opera format

Wrong: https://dns1.oss.co.za/testclient123/dns-query ← Firefox format

✅ Vivaldi Format

The token is in the URL path: /token_testclient123
Vivaldi uses the {?dns} template variable
No /dns-query path needed
Same format as Google Chrome

6 Save and Verify

The setting saves automatically. Vivaldi will validate the endpoint.

✅ Success Indicator Blocked domains like adult.filterdns.net should show DNS_PROBE_FINISHED_NXDOMAIN.

🗺️ Quick Navigation Reference

Vivaldi's DNS settings are NOT under Privacy & Security!

They are under Network in the left sidebar.

            Red "V" menu →
            Settings →
            Network →
            DNS Over HTTPS
        

Or simply type: vivaldi://settings/network in the address bar.

🧪 Test Your Configuration

Use these test sites to verify your Vivaldi configuration is working correctly.

Blocked Domains (Should NOT Load)

Test Domain	Expected Result	What You Should See
`http://zycdjz.com`	BLOCKED	DNS_PROBE_FINISHED_NXDOMAIN
`http://malware.testcategory.com`	BLOCKED	DNS_PROBE_FINISHED_NXDOMAIN
`http://phishing.testcategory.com`	BLOCKED	DNS_PROBE_FINISHED_NXDOMAIN
`http://adult.filterdns.net`	BLOCKED	DNS_PROBE_FINISHED_NXDOMAIN

Clean Domains (Should Load Normally)

Test Domain	Expected Result	What You Should See
`https://example.com`	LOAD	Normal page loads
`https://google.com`	LOAD	Normal page loads

DNS Leak Test

Test Domain	Expected Result	What You Should See
`https://dnsleaktest.com`	Your DNS Server	Should show `dns1.oss.co.za` or `102.220.218.218`

🔍 Browser Endpoint Formats Comparison

🔷 Vivaldi {?dns} ✅ Working

🌐 Chrome {?dns} ✅ Working

🌐 Edge ?dns ✅ Working

🅾️ Opera ?dns ✅ Working

🦊 Firefox /dns-query ✅ Working

🦁 Brave ?dsn ✅ Working

Browser	Endpoint Format	Example	Status
🔷 Vivaldi	`{?dns}` template	`https://dns1.oss.co.za/xxxxx{?dns}`	✅ Verified
🌐 Chrome	`{?dns}` template	`https://dns1.oss.co.za/xxxxx{?dns}`	✅ Verified
🌐 Edge	`?dns` parameter	`https://dns1.oss.co.za/xxxxx?dns`	✅ Verified
🅾️ Opera	`?dns` parameter	`https://dns1.oss.co.za/xxxxx?dns`	✅ Verified
🦊 Firefox	`/dns-query` suffix	`https://dns1.oss.co.za/xxxxx/dns-query`	✅ Verified
🦁 Brave	`?dsn` parameter	`https://dns1.oss.co.za/xxxxx?dsn`	✅ Verified

⚠️ Important

Vivaldi and Chrome use {?dns} (curly braces)
Edge and Opera use ?dns
Firefox uses /dns-query
Brave uses ?dsn

🔧 Troubleshooting

❌ "Please verify that this is a valid provider"

Make sure you're using the correct format: https://dns1.oss.co.za/xxxxx{?dns}
Use curly braces { }, not parentheses ( )
Check that your token is valid and active

❌ Can't find DNS settings

Make sure you're in Network section (left sidebar)
NOT Privacy & Security
Or type vivaldi://settings/network directly

✅ Verify It's Working

Visit http://adult.filterdns.net - should show DNS_PROBE_FINISHED_NXDOMAIN
Visit https://dnsleaktest.com - should show dns1.oss.co.za

↩️ How to Roll Back

To revert to your previous DNS settings:

Step 1: Go to Network

vivaldi://settings/network

Step 2: Turn Off DNS Over HTTPS

Toggle "Enable DNS Lookup Over HTTPS" to OFF.

Step 3: Clear DNS Cache

Visit vivaldi://net-internals/#dns and click "Clear host cache".

🎯 Summary

🔷 Vivaldi supports DoH under Network settings
✅ Working URL: https://dns1.oss.co.za/xxxxx{?dns}
🔒 All DNS queries are encrypted via DoH (port 443) with TLS 1.3
⚡ Vivaldi uses the {?dns} format (same as Chrome)
🔄 Easily toggle on/off as needed

🚀 Quick Reference:

https://dns1.oss.co.za/testclient123{?dns}

🌐 Browser Format Comparison:

Vivaldi: https://dns1.oss.co.za/xxxxx{?dns}
Chrome:  https://dns1.oss.co.za/xxxxx{?dns}
Edge:    https://dns1.oss.co.za/xxxxx?dns
Opera:   https://dns1.oss.co.za/xxxxx?dns
Firefox: https://dns1.oss.co.za/xxxxx/dns-query
Brave:   https://dns1.oss.co.za/xxxxx?dsn