{"id":37596,"date":"2026-04-09T04:08:34","date_gmt":"2026-04-09T11:08:34","guid":{"rendered":"https:\/\/www.privateinternetaccess.com\/blog\/?p=37596"},"modified":"2026-04-09T04:54:33","modified_gmt":"2026-04-09T11:54:33","slug":"encrypted-dns-traffic","status":"publish","type":"post","link":"https:\/\/www.privateinternetaccess.com\/blog\/encrypted-dns-traffic\/","title":{"rendered":"Encrypted DNS Traffic: What It Is and How It Works"},"content":{"rendered":"\n

The Domain Name System (DNS)<\/a> is how your device finds websites online, but by default, your internet service provider (ISP), network admins, and even others on the same network may be able to see those requests. Encrypted DNS addresses this exposure by adding a layer of privacy to everyday browsing.<\/p>\n\n\n\n

In this article, we\u2019ll clearly explain what encrypted DNS is, how it works, and its pros and cons. We\u2019ll also help you understand and troubleshoot common issues.<\/p>\n\n\n\n

What Is Encrypted DNS Traffic?<\/h2>\n\n\n\n

Encrypted DNS traffic is when DNS queries and responses are protected by encryption.<\/strong> Essentially, the data is scrambled so it\u2019s far harder for anyone else on the network to read or interfere with.<\/p>\n\n\n\n

To fully understand what this is, let\u2019s quickly go over how DNS works.<\/p>\n\n\n\n

DNS is responsible for converting human-friendly website names (like privateinternetaccess.com<\/em>) into machine-readable IP addresses (like 203.0.113.40<\/em>) that computers use to route traffic. Normally, your device sends DNS queries and gets responses in plain text.<\/strong><\/p>\n\n\n\n

This means anyone monitoring the network, like your ISP, network administrator, or public Wi-Fi operator, can see which websites you\u2019re trying to visit.<\/strong> In a worst-case scenario, like if a malicious actor gains access to the network, they may be able to intercept and manipulate your DNS requests, sending you to fake websites designed to capture your passwords or payment details.<\/p>\n\n\n\n

How Does DNS Encryption Work?<\/h2>\n\n\n\n

When your device is set up to use encrypted DNS, it handles the encryption locally, before any DNS requests leave your device. Only the trusted DNS resolver can decrypt it.<\/strong>\u00a0<\/p>\n\n\n\n

Here\u2019s what happens at the network level:<\/p>\n\n\n\n

    \n
  1. Your device generates a DNS query (for example, asking for the IP address of privateinternetaccess.com<\/em>).<\/li>\n\n\n\n
  2. Your device encrypts it using a pre-selected protocol<\/a> typically handled by the operating system, browser, or a DNS client.<\/li>\n\n\n\n
  3. The encrypted request is then sent over the internet to a DNS server (also called a resolver) that supports encrypted queries.<\/li>\n\n\n\n
  4. The resolver decrypts the request, looks up the IP address, and sends the response back \u2013 also encrypted.<\/li>\n\n\n\n
  5. Your device receives and decrypts the answer, then uses the IP address to connect to the website or service.<\/li>\n<\/ol>\n\n\n
    \n
    \"How<\/figure>\n<\/div>\n\n\n

    Types of Encrypted DNS Protocols<\/h2>\n\n\n\n

    To protect DNS traffic, your device has to use an encryption protocol: a set of rules that defines how that data is transmitted over the internet in a secure manner. These protocols sit between your device and the DNS server.<\/p>\n\n\n\n

    The two most common DNS encryption protocols are DNS over HTTPS (DoH) and DNS over TLS (DoT).<\/strong><\/p>\n\n\n\n

    DNS over HTTPS (DoH)<\/h3>\n\n\n
    \n
    \"How<\/figure>\n<\/div>\n\n\n

    DNS over HTTPS encrypts your DNS queries by sending them inside an HTTPS request.<\/p>\n\n\n\n

    HTTPS relies on TLS (Transport Layer Security), a cryptographic protocol that secures data as it travels over the internet. TLS encrypts the entire communication between your device and the DNS server, including your DNS query and the response. It also authenticates the DNS server, ensuring that you\u2019re communicating with a trusted resolver and not an imposter.<\/p>\n\n\n\n

    Since HTTPS uses port 443<\/a>, the same port used for secure website traffic, your DNS lookups are hidden within regular browsing activity, making it much harder for ISPs, network admins, or censors to detect, track, or block them separately.<\/p>\n\n\n\n

    Most modern browsers, like Firefox, Chrome, and Edge, support DoH directly. This makes setup easy \u2013 you can usually turn it on directly from your browser settings without extra technical steps. If you\u2019re looking to improve privacy on highly regulated networks like schools or workplaces, DoH is often the best choice.<\/p>\n\n\n\n

    DNS over TLS (DoT)<\/h3>\n\n\n
    \n
    \"How<\/figure>\n<\/div>\n\n\n

    DNS over TLS (DoT) also encrypts your DNS requests using the TLS protocol, but does so over a dedicated channel specifically reserved for DNS communication (port 853).<\/p>\n\n\n\n

    Just like with DoH, TLS protects your DNS traffic from eavesdropping or tampering and verifies that you\u2019re talking to a legitimate server.\u00a0<\/p>\n\n\n\n

    However, unlike DoH, which disguises DNS traffic inside regular HTTPS web traffic, DoT uses its own dedicated port. This makes it easier for network tools to recognize and manage, but also means networks can easily recognize and block it. On the plus side, DoT sometimes provides slightly faster DNS responses because it doesn\u2019t include the extra web-based layers involved in DoH.\u00a0<\/p>\n\n\n\n

    However, DoT often requires manual setup, either through your operating system settings or router, which can be more complex compared to DoH\u2019s browser-based approach. It\u2019s typically implemented at the system or network level, making it ideal for securing DNS across all apps and devices on a network.<\/p>\n\n\n\n

    If you want device-wide or network-wide DNS encryption and you\u2019re not worried about DNS filtering, DoT is a clean, efficient solution.<\/p>\n\n\n\n

    DNS over HTTPS vs. DNS over TLS\u00a0<\/h2>\n\n\n\n
    Feature<\/strong><\/td>DNS over HTTPS<\/strong><\/td>DNS over TLS<\/strong><\/td><\/tr>
    What it does<\/strong><\/td>Encrypts DNS queries by sending them as standard HTTPS web traffic<\/td>Encrypts DNS queries using a secure TLS connection dedicated to DNS<\/td><\/tr>
    How it encrypts<\/strong><\/td>Wraps DNS queries in HTTPS, the same protocol used to secure websites (TLS over HTTP)<\/td>Uses pure TLS encryption directly between your device and the DNS server<\/td><\/tr>
    Port used<\/strong><\/td>Port 443 (same as regular web traffic)<\/td>Port 853 (used only for encrypted DNS)<\/td><\/tr>
    Privacy strength<\/strong><\/td>High (hides DNS traffic inside normal web traffic)<\/td>High (encrypts all DNS traffic)<\/td><\/tr>
    Blocking resistance<\/strong><\/td>Strong (hard to block because it looks like website traffic)<\/td>Moderate (firewalls can block or flag DNS-specific port)<\/td><\/tr>
    Ease of setup<\/strong><\/td>Very easy (built into browsers like Chrome and Firefox)<\/td>Requires some setup (typically configured at the system or network level)<\/td><\/tr>
    Device compatibility<\/strong><\/td>Works well in browsers and apps that support DoH<\/td>Ideal for routers, operating systems, and full-device protection<\/td><\/tr>
    Performance<\/strong><\/td>Slightly slower due to extra layers of HTTPS<\/td>Slightly faster as it\u2019s optimized specifically for DNS<\/td><\/tr>
    Best for<\/strong><\/td>Everyday users who want quick, browser-based privacy without configuration<\/td>Advanced users setting up encrypted DNS for entire devices or networks<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n

    <\/p>\n\n\n

    <\/p>

    Pro tip:<\/strong> If you\u2019re looking for system-wide DNS encryption, but lack the skills to set up DNS over TLS, you can use a VPN with a private DNS, like Private Internet Access<\/a>. It encrypts all the data leaving and entering your device, including your DNS queries. With intuitive apps for major systems, it\u2019s simple to set up, with no tech knowledge required.<\/p><\/div>\n\n\n\n

    Benefits and Drawbacks of Encrypted DNS<\/h2>\n\n\n\n

    Encrypting DNS traffic offers significant privacy improvements but does have a few trade-offs. Let\u2019s break down the key benefits and limitations:<\/p>\n\n\n\n

    Main Benefits of Encrypted DNS<\/h3>\n\n\n\n

    \u2705Protect your browsing privacy:<\/strong> It makes your browsing activity less visible to ISPs, advertisers, and network operators.
    \u2705Prevent DNS spoofing and tampering:<\/strong> Helps you reach the real website you\u2019re looking for rather than fake, manipulated, or harmful alternatives.
    \u2705Maintain privacy on public Wi-Fi:<\/strong> Shields your online activity from bad actors on unsecured shared networks like those at airports or caf\u00e9s.<\/p>\n\n\n\n

    Possible Drawbacks of Encrypted DNS<\/h3>\n\n\n\n

    \u26a0\ufe0fSlightly slower DNS resolution.<\/strong> Encryption can introduce minor delays, especially noticeable on slow networks or older devices. For most users, this impact is minimal, but it may occasionally cause slower loading times.
    \u26a0\ufe0fNetwork compatibility issues.<\/strong> Certain networks actively block encrypted DNS protocols (particularly DNS over TLS, which uses its own port). You might experience connectivity problems or see warnings about blocked DNS traffic.
    \u26a0\ufe0fMore complex setup in some cases.<\/strong> While browsers usually support encrypted DNS easily, enabling it system-wide or on routers might involve technical configuration that\u2019s challenging for some users.
    \u26a0\ufe0fLimited protection.<\/strong> Encrypted DNS protects only your DNS requests, not all the traffic or connections, which leaves some privacy gaps.<\/p>\n\n\n\n

    <\/p>

    Pro tip:<\/strong> The PIA VPN app encrypts all the traffic leaving and entering your device, giving you a high degree of reliable protection with no manual configuration required. It also comes with an advanced kill switch<\/a>, DNS leak protection, automation, split tunneling, and other effective advanced privacy features.<\/p><\/div>\n\n\n\n

    Why Is My Network Blocking Encrypted DNS Traffic?<\/h2>\n\n\n\n

    If you see a message that \u201cThis network is blocking encrypted DNS traffic,\u201d it means your current network isn\u2019t allowing encrypted DNS traffic to function properly. Here\u2019s why that might be happening:<\/p>\n\n\n\n