Why Your ISP Knows More About You Than You Think

You might think your browsing is private. You use incognito mode, clear your cookies, maybe even have a VPN. But there's one entity that sees almost everything you do online: your Internet Service Provider.

The DNS Problem

Every time you type a website address into your browser, your device sends a DNS query to translate that domain name into an IP address. By default, these queries go through your ISP's DNS servers - completely unencrypted, completely visible.

This means your ISP can see:

• Every website you visit
• When you visit each site
• How often you return
• What apps you use (many apps make DNS queries too)
• Your smart home device activity

Even if you're using HTTPS to encrypt the content of your browsing, the DNS query happens before that encryption kicks in. Your ISP knows you visited a health website, a dating app, or a job search portal - they just can't see exactly what you did there.

What ISPs Do With Your Data

In many countries, ISPs are legally allowed to collect, store, and even sell your browsing data. In the United States, Congress rolled back privacy protections in 2017, explicitly allowing ISPs to monetize your internet history without your consent.

Here's what they might do with it:

Targeted Advertising

ISPs build profiles based on your browsing habits and sell this information to advertisers. That's why you might see ads for something you only searched for once, even across different devices.

Data Retention

Many ISPs store your browsing history for months or even years. This data can be subpoenaed by law enforcement, sometimes without a warrant, depending on your jurisdiction.

Traffic Analysis

ISPs use your browsing patterns to manage network traffic, throttle certain services, or offer "optimized" packages that prioritize some content over others.

"Your ISP is in a uniquely privileged position. They see your traffic before anyone else, and there's no way to use the internet without going through them."

The Encrypted DNS Solution

Encrypted DNS protocols like DNS over HTTPS (DoH) and DNS over TLS (DoT) solve this problem by encrypting your DNS queries before they leave your device. Instead of your ISP seeing every domain you request, they see only encrypted traffic going to a DNS resolver.

ClearDNS uses DNS over HTTPS to ensure your queries are:

• Encrypted: Your ISP can't read which domains you're requesting
• Authenticated: You know you're talking to ClearDNS, not an imposter
• Private: We don't log your queries or sell your data

But Wait - Doesn't My ISP Still See Something?

Yes, your ISP can still see that you're sending traffic to ClearDNS's servers. They can see the IP addresses you connect to after DNS resolution. But they lose the detailed view of which specific websites you're visiting based on DNS queries.

Combined with HTTPS (which encrypts the content of websites) and ECH (Encrypted Client Hello, which hides which specific site you're requesting from a shared host), encrypted DNS significantly reduces what your ISP can learn about your online activity.

Beyond ISP Privacy

Encrypted DNS also protects you from other threats:

Public WiFi Risks

On coffee shop or hotel WiFi, anyone on the network could potentially see your unencrypted DNS queries. Encrypted DNS makes this impossible.

DNS Hijacking

Malicious actors sometimes redirect DNS queries to fake websites. Encrypted DNS with DNSSEC validation prevents this attack.

Corporate Surveillance

Even at work, encrypted DNS to an external resolver limits what your employer can see about your browsing on personal devices.

Making the Switch

Switching to encrypted DNS is simple with ClearDNS:

1. Visit my.cleardns.io on any device
2. Scan the QR code or follow the setup guide for your device
3. Your DNS queries are now encrypted and private

No account needed. No personal information required. Just private, secure DNS resolution.

Your internet provider doesn't need to know which websites you visit. With ClearDNS, they won't.