When you connect your smartphone or laptop to your home network, the device automatically receives a number of settings that allow you to access the internet. One of the most important, yet often overlooked, settings is the address. DNS serversThis component is responsible for ensuring that you see clear website names in your browser's address bar instead of complex digital codes.
Many users are unaware that their internet service provider (ISP) uses its own DNS addresses by default, which can be slow or prone to blocking. Understanding this How DNS works, provides access to accelerated page loading and bypassing some network-level restrictions.
In this article, we'll take a detailed look at the Domain Name System (DNS), why you should consider changing your router's default settings, and which public servers are considered the most reliable today.
How DNS works in wireless networks
The Domain Name System (DNS) functions like the internet's phone book. When you enter a query, such as google.com, your device doesn't know where the website is physically located. It contacts a DNS server, which translates the human-readable name into machine-readable IP address, consisting of a set of numbers.
In the context of Wi-Fi networks, this process occurs unnoticed by the user, but its speed directly impacts how quickly a page loads after entering the address. If the DNS server responds slowly, there is a noticeable delay before the content starts loading, even if the internet speed itself is high.
The standard work scheme looks like this:
- 📱 You open your browser and enter the website address.
- 📡 The router sends a request to the DNS server specified in the network settings.
- 💾 The server finds the corresponding IP address and returns it to your device.
- 🌐 The browser establishes a connection to the found address and loads the page.
Using your provider's default servers isn't always effective. They may be overloaded or out of date for some resources. Changing DNS to public alternatives often solves the problem of "slow searches" for a site, reducing response times.
Why change DNS on a router?
Many users wonder: is it necessary to tinker with network settings at all? The answer depends on your goals. Replacing the default DNS on your router allows you to centrally update settings for all connected devices at once, including Smart TV, game consoles and IoT gadgets where manual input is not possible.
One of the main reasons for the change is to improve security. Some providers may redirect requests to non-existent advertising pages or expose the network to DNS spoofing attacks. Using secure protocols and reliable servers minimizes these risks.
Content filtering is also worth noting. Some public DNS services offer built-in protection against phishing sites and network-level ad blocking, eliminating the need to install additional apps on each device.
⚠️ Attention: After changing DNS addresses, some local provider services (such as your personal account or IPTV set-top boxes linked to the operator's network) may stop working. In such cases, manual exception settings or a return to automatic settings are required.
Review of popular public DNS servers
Today, there are several major players offering free and fast DNS services. Choosing a specific provider depends on your location and privacy requirements.
One of the most popular solutions is Google Public DNSIt features high response speed and stability, making it an excellent choice for most users. Server addresses: 8.8.8.8 And 8.8.4.4.
Another reliable option is Cloudflare, which positions itself as a service that doesn't collect user data. It often shows the best results in speed tests. Addresses: 1.1.1.1 And 1.0.0.1. Also worth mentioning Quad9, which focuses on security and blocks access to malicious domains.
A comparison table of key characteristics will help you make your choice:
| Provider | Main IP | Alternative IP | Peculiarity |
|---|---|---|---|
| 8.8.8.8 | 8.8.4.4 | High speed and stability | |
| Cloudflare | 1.1.1.1 | 1.0.0.1 | Privacy protection, no logging |
| Quad9 | 9.9.9.9 | 149.112.112.112 | Blocking malicious websites |
| OpenDNS | 208.67.222.222 | 208.67.220.220 | Flexible filtering settings |
What is DNS over HTTPS (DoH)?
DoH is a technology that encrypts DNS requests, making them invisible to the ISP and protecting them from spoofing. However, it requires browser or operating system support; simply changing the IP address in the router doesn't always activate encryption.
Step-by-step instructions for setting up DNS on a router
The process of changing DNS settings is universal for most modern routers, whether TP-Link, Asus, Keenetic or MikroTikYou will need access to the device's web interface.
First, you need to log into the control panel. Open a browser and enter the router's address, usually 192.168.0.1 or 192.168.1.1Enter your login and password, which are often found on a sticker on the bottom of the device, if you haven't changed them previously.
Next, find the section responsible for internet or WAN settings. Depending on your router model, the path may look like this: Internet → Basic Settings or Network → WANThis is where DNS server addresses, obtained automatically or manually, are entered.
Use this checklist to make sure you don't miss anything:
☑️ Setting up DNS on the router
After saving the changes, your router may need to reboot. Only then will the new settings be applied to all devices connected via Wi-Fi and cable.
Configuring DNS on individual devices
Sometimes changing router settings is impossible or impractical. For example, if you're using a public Wi-Fi network or want to use different DNS for different devices. In such cases, you can configure the settings directly on the client.
In the operating system Windows This is done through the network control panel. You need to go to the properties of the active connection, select the protocols IPv4 and enter the required addresses manually. This will override the settings received from the router.
On mobile devices running Android or iOS The process is also quite simple. In the Wi-Fi settings, tap the network information icon (or hold the network name) and change the IP settings from DHCP to static. After that, the DNS entry fields will become available.
If you've changed your phone's DNS but the speed hasn't changed, the problem may not be with your domain names, but with your signal or your provider's plan.
⚠️ Attention: When manually configuring DNS on a laptop you take with you to other places (cafes, office), be sure to reset the settings to "Automatic." Otherwise, the internet may stop working on other networks due to address conflicts.
Diagnosing and troubleshooting
After changing DNS servers, users sometimes encounter a situation where some websites stop opening, while others load with errors. This may be due to the selected server being temporarily unavailable or blocking certain resources.
For diagnostics, you can use the command line. Command nslookup google.com This will show you the IP address returned by your current DNS server. If there's no response or it's incorrect, the server isn't working correctly.
It's also a good idea to flush the DNS cache to prevent the device from using old records stored in memory. In Windows, this is done with the command ipconfig /flushdns, run as administrator. On macOS, the command sudo dscacheutil -flushcache will perform a similar function.
In rare cases, the problem lies with the router itself, which can't "push" requests through the new server due to firewall settings. In this case, it's worth checking the security section of the router settings.
The Impact of DNS on Speed and Security
Many people mistakenly believe that changing DNS will increase the maximum download speed of files. This is not true. DNS only affects the time it takes to initiate a connection (ping to the name server), not the bandwidth.
However, for web surfing, where dozens of new connections are constantly being opened (ads, scripts, images from different domains), a fast DNS can significantly speed up page response times. This is especially noticeable on mobile networks or when visiting "heavy" websites.
From a security perspective, using DNS from trusted providers (such as Quad9 or Cloudflare) protects against accessing fake banking or social media sites. They maintain databases of phishing domains and block access to them at the request level.
Can the DNS server see what websites I visit?
Yes, the DNS server operator technically sees all domain name requests you send. However, it does not see the contents of your messages, passwords, or data transmitted over the secure HTTPS protocol. For complete traffic anonymization, we recommend using a VPN in conjunction with a reliable DNS.
What should I do if IPTV stops working after changing DNS?
TV providers often use internal DNS servers to route traffic to set-top boxes. Solution: Set your router settings to automatic DNS retrieval for the WAN port, and manually configure public DNS settings only in the Wi-Fi network settings or on specific devices (PCs, phones), leaving the set-top box on its default settings.
Do I need to reboot my computer after changing DNS on my router?
In most cases, disconnecting from Wi-Fi and reconnecting is sufficient. The device will request new DHCP settings, which will already contain the new DNS addresses. If this doesn't help, rebooting the network card or the computer itself is guaranteed to apply the changes.
Which DNS is best for gaming?
Minimal latency is essential for online gaming. Google (8.8.8.8) or Cloudflare (1.1.1.1) servers typically perform best, as they have distributed infrastructure worldwide. However, results depend on your geographic location and your ISP's routing—it's best to test both.
Will DNS settings be reset after resetting the router?
Yes, a hard reset returns the router to factory settings, with DNS set to "Automatic" (obtained from the ISP). All manual changes will be lost, and the setup process will need to be repeated.