Every time you type a website address into your browser, a fascinating process happens behind the scenes before the page appears. Whether you enter a familiar site like a news website, a streaming platform, or your favorite online store, your device first needs to discover where that website actually lives on the internet. This seemingly simple task is performed by a system known as the Domain Name System, or DNS.
Most people never think about DNS because it works silently in the background. Yet changing your DNS settings can sometimes improve website loading speeds, increase browsing privacy, enhance security, and even make your internet experience more reliable.
The good news is that changing DNS settings is usually straightforward and does not require advanced technical knowledge. Whether you use Windows, macOS, Android, iPhone, Linux, or even a gaming console, the basic idea remains the same: you tell your device to use a different DNS server instead of the one provided automatically by your internet service provider.
This guide explains what DNS is, why you might want to change it, how DNS works, and how to change DNS settings on virtually any modern device while ensuring everything remains scientifically and technically accurate.
What Is DNS?
DNS, short for the Domain Name System, is often called the internet’s phonebook.
Humans prefer memorable website names such as example.com, but computers communicate using numerical Internet Protocol (IP) addresses. A DNS server translates human-readable domain names into these numerical addresses so your browser knows where to connect.
Without DNS, you would need to memorize long strings of numbers instead of simple website names.
For example, when you type a website address into your browser, your device asks a DNS server a simple question:
“Which IP address belongs to this website?”
The DNS server responds with the correct address, allowing your browser to connect to the website.
This entire process usually takes only milliseconds.
Why Would You Want to Change DNS Settings?
Many people never change their DNS settings because the default configuration works well enough. However, there are situations where switching to another DNS provider can offer noticeable advantages.
Some DNS providers operate larger, faster global networks, allowing domain name lookups to complete more quickly. Although DNS is only one part of loading a webpage, reducing lookup time can make browsing feel more responsive, especially when visiting many different websites.
Security is another important reason. Some DNS services automatically block access to known phishing websites, malware domains, and fraudulent servers before your browser even connects to them.
Privacy can also improve depending on the provider. Some public DNS services promise not to permanently store personally identifiable information or limit how long they retain DNS request logs. However, every DNS provider has its own privacy policy, so choosing one should involve understanding how it handles user data.
Parents sometimes change DNS settings to use family-friendly DNS services that block adult content or harmful websites.
Businesses frequently use customized DNS servers to manage internal networks, improve reliability, and enforce organizational security policies.
Does Changing DNS Make the Internet Faster?
This is one of the most common questions, and the answer requires a little nuance.
Changing DNS usually does not increase your internet connection speed.
If your broadband connection is capable of downloading at 500 Mbps, switching DNS servers will not suddenly increase that speed to 1 Gbps.
However, DNS affects how quickly your device finds a website before downloading its content.
A faster DNS server may reduce the delay between entering a website address and the browser beginning to load the page.
The improvement may be very small or quite noticeable depending on your location, your internet provider, and the DNS server you choose.
Modern browsers also cache DNS information locally, meaning repeat visits to websites often skip another DNS lookup entirely.
Common Public DNS Providers
Several organizations operate free public DNS services.
Google Public DNS is widely known for reliability and extensive global infrastructure.
Cloudflare DNS emphasizes privacy and low-latency performance.
Quad9 focuses heavily on cybersecurity by blocking many known malicious domains.
OpenDNS, operated by Cisco, provides security features and optional content filtering.
Each service has strengths depending on what matters most to you.
There is no universally “best” DNS provider because performance varies by geographic location and network conditions.
Should You Change DNS on Your Device or Router?
There are two common places where DNS settings can be changed.
The first is on an individual device.
If you change DNS settings on your laptop, only that laptop uses the new DNS server.
Your phone, tablet, smart TV, and other devices continue using their existing settings unless you change them separately.
The second option is changing DNS on your Wi-Fi router.
When configured on the router, every device connected to your home network automatically uses the selected DNS servers unless an individual device overrides them.
For households with many devices, router-level configuration is often more convenient.
How to Change DNS Settings on Windows
Windows allows users to manually specify DNS servers for both Ethernet and Wi-Fi connections.
Begin by opening the Settings application.
Navigate to the Network and Internet section and choose the network connection currently in use.
Locate the DNS settings or DNS server assignment section.
Instead of automatic configuration, select the manual option.
Enable either IPv4, IPv6, or both, depending on your network.
Enter the preferred DNS server address and, if desired, a secondary DNS server that acts as a backup if the first server becomes unavailable.
Save the changes.
Some versions of Windows also allow encrypted DNS using DNS over HTTPS (DoH), providing additional privacy by encrypting DNS requests between your computer and the DNS provider.
After saving the settings, Windows immediately begins using the new DNS server.
How to Change DNS Settings on macOS
Apple computers make DNS configuration relatively simple.
Open System Settings and navigate to Network.
Select the active network connection, whether Wi-Fi or Ethernet.
Open the network details and locate the DNS section.
Remove any unwanted DNS servers and add your preferred DNS server addresses.
Confirm the changes and close the settings window.
macOS immediately begins using the updated DNS configuration for future DNS requests.
How to Change DNS Settings on Android
Android supports multiple ways to configure DNS depending on the version of Android and the device manufacturer.
For individual Wi-Fi networks, open Wi-Fi settings and select the connected network.
Choose the option to modify or edit the network.
Expand the advanced settings if necessary.
Instead of automatic IP configuration, select manual settings where DNS fields become available.
Enter your preferred DNS server addresses and save the configuration.
Modern Android versions also support Private DNS, which uses DNS over TLS (DoT).
Private DNS encrypts DNS requests while they travel across the network, helping prevent others from seeing which websites your device is trying to access.
Private DNS usually requires entering a DNS provider’s hostname instead of numerical IP addresses.
How to Change DNS Settings on iPhone and iPad
Apple allows DNS changes for individual Wi-Fi networks.
Open the Settings app and select Wi-Fi.
Tap the information button beside your connected network.
Locate the Configure DNS option.
Switch from Automatic to Manual mode.
Remove unwanted DNS entries and add your preferred DNS servers.
Save the settings.
These DNS settings apply only to that specific Wi-Fi network.
If you connect to another wireless network later, you may need to configure DNS separately for that network.
Cellular connections generally continue using your mobile carrier’s DNS unless additional technologies such as VPNs or encrypted DNS solutions are employed.
How to Change DNS Settings on Linux
Linux offers several methods depending on the distribution.
Desktop environments such as Ubuntu’s GNOME interface allow DNS changes through graphical network settings.
Open the network configuration panel.
Select the active network.
Locate the IPv4 or IPv6 configuration.
Specify manual DNS servers.
Apply the changes.
Advanced Linux users may also configure DNS through command-line utilities or network management services depending on the distribution.
Since Linux is highly customizable, the exact steps vary considerably.
How to Change DNS Settings on a Wi-Fi Router
Changing DNS on your router affects nearly every device connected to your home network.
Begin by opening your router’s administration page through a web browser.
Log in using the administrator credentials.
Navigate to the Internet, WAN, or Network settings.
Locate the DNS server fields.
Replace the automatically assigned DNS servers with your preferred DNS provider.
Save the settings.
Some routers may restart automatically before applying the new configuration.
Afterward, devices connecting to your network generally begin using the new DNS servers automatically.
How to Change DNS on Smart TVs
Many modern smart televisions allow manual DNS configuration.
Open the television’s network settings.
Select the active internet connection.
Locate advanced network options.
Choose manual DNS configuration.
Enter your preferred DNS server address.
Save the settings and reconnect to the network if necessary.
Because television interfaces differ between manufacturers, menu names vary slightly.
How to Change DNS on Gaming Consoles
Gaming consoles such as PlayStation and Xbox also support manual DNS configuration.
Open the console’s network settings.
Choose the current internet connection.
Select manual network configuration.
Locate the DNS settings.
Enter your preferred primary and secondary DNS servers.
Save the changes and reconnect if necessary.
Although changing DNS usually does not reduce online gaming latency directly, it can improve how quickly online services and game servers are located.
Understanding IPv4 and IPv6 DNS
Modern internet devices often support both IPv4 and IPv6.
IPv4 remains the most widely used addressing system.
IPv6 was developed because the internet needed far more unique addresses than IPv4 could provide.
Many DNS providers offer both IPv4 and IPv6 DNS servers.
If your network supports IPv6, configuring both versions ensures your device can efficiently resolve addresses regardless of which protocol a website uses.
What Is Encrypted DNS?
Traditional DNS requests are often transmitted without encryption.
This means others on the network may be able to observe which domain names your device requests, even if the website itself uses HTTPS.
Newer technologies improve privacy.
DNS over HTTPS, commonly abbreviated DoH, encrypts DNS requests inside standard HTTPS connections.
DNS over TLS, or DoT, also encrypts DNS communication but uses a different protocol.
Encrypted DNS helps reduce the ability of network operators, attackers on unsecured networks, or other intermediaries to monitor DNS traffic.
However, encrypted DNS does not make browsing completely anonymous because websites, internet providers, and other services may still collect information through other mechanisms.
How to Check Whether DNS Changes Worked
After changing DNS settings, you may wish to verify that your device is using the new DNS provider.
Many operating systems include command-line tools that display the currently configured DNS servers.
There are also websites that identify which DNS resolver your requests appear to be using.
If everything has been configured correctly, these tools should report the DNS provider you selected rather than your internet service provider’s default servers.
Troubleshooting DNS Problems
Occasionally, websites may stop loading after changing DNS settings.
This usually has a straightforward explanation.
The DNS server address may have been entered incorrectly.
The chosen DNS server could be temporarily unavailable.
The network may require restarting before changes take effect.
Sometimes your device simply continues using cached DNS information.
Restarting the device or clearing the DNS cache often resolves the issue.
If problems persist, reverting to automatic DNS configuration can quickly determine whether DNS settings are responsible.
Is Changing DNS Safe?
For most users, changing DNS settings is perfectly safe.
DNS changes do not modify files, damage hardware, or permanently alter your operating system.
If you are unhappy with the results, you can simply return the settings to automatic configuration.
However, choosing a trustworthy DNS provider is important.
Since DNS servers receive requests for nearly every website you visit, selecting a reputable organization with transparent privacy practices helps protect your browsing information.
Can DNS Improve Security?
Yes, although DNS should never be viewed as complete cybersecurity protection.
Many modern DNS providers maintain databases of known malicious domains.
If your device requests one of these domains, the DNS server may refuse to provide the address, preventing your browser from connecting.
This approach helps reduce exposure to phishing attacks, malware distribution websites, ransomware infrastructure, and fraudulent domains.
Nevertheless, DNS protection should complement—not replace—other security measures such as antivirus software, operating system updates, secure passwords, and cautious online behavior.
DNS Caching and Why It Matters
To improve performance, devices temporarily store DNS lookup results in a local cache.
Instead of asking the DNS server every time you revisit a familiar website, your computer often remembers the answer.
This reduces network traffic and speeds up browsing.
Eventually, cached entries expire according to values known as Time to Live (TTL), after which the device requests updated information from the DNS server.
Caching is one reason why switching DNS providers may not produce immediate changes for every website.
When You Should Consider Changing DNS
Changing DNS can be worthwhile if your current DNS service feels unreliable, websites occasionally fail to resolve, you want stronger protection against malicious domains, or you prefer a provider with better privacy practices.
It can also be useful if you manage multiple devices at home and want centralized control through your router.
For most users, changing DNS is a simple adjustment that requires only a few minutes but may provide a smoother, more secure browsing experience.
Final Thoughts
DNS is one of the internet’s essential technologies, quietly translating website names into the numerical addresses that computers understand. Although it operates invisibly, it plays a crucial role every time you browse the web, stream videos, send emails, or use online applications.
Learning how to change DNS settings gives you greater control over your internet connection. Whether your goal is faster website lookups, improved privacy, enhanced security, or greater reliability, choosing the right DNS provider and configuring it correctly can make a meaningful difference. While DNS alone cannot transform the speed of your internet connection, it can help create a more responsive, secure, and dependable online experience across all of your devices.
