What DNS Server is 75.75.75.75? A Simple Guide for Everyone

What Is a DNS Server?

Before diving into 75.75.75.75 specifically, let’s quickly understand what a DNS server is. DNS stands for Domain Name System. It’s like the phone book of the internet.

When you type a website name like www.google.com your computer doesn’t understand that name. It needs an IP address to find the website. A DNS server translates the domain name into an IP address, helping you reach the website quickly.

What is DNS 75.75.75.75?

75.75.75.75 is a public DNS server provided by Comcast Xfinity, one of the largest internet service providers (ISPs) in the United States. It is often used by Xfinity customers as their default DNS resolver.

This DNS server works behind the scenes to translate domain names into IP addresses, ensuring that your browser can load websites.

Alternate server: Comcast also provides a secondary DNS server:

• Primary DNS: 75.75.75.75
• Secondary DNS: 75.75.76.76

Who Owns 75.75.75.75?

The IP address 75.75.75.75 is officially owned and managed by Comcast Cable Communications, LLC. It is a trusted and legitimate DNS service for users in North America, primarily customers of the Xfinity internet service.

Is 75.75.75.75 a Safe DNS Server to Use?

Yes, 75.75.75.75 is safe and secure, especially for Comcast/Xfinity users. It’s a stable and reliable server designed for high-speed name resolution with minimal downtime.

However, if you are not a Comcast customer, it’s better to use other public DNS servers like:

• Google DNS: 8.8.8.8 and 8.8.4.4
• Cloudflare DNS: 1.1.1.1 and 1.0.0.1
• OpenDNS: 208.67.222.222 and 208.67.220.220

Why Use 75.75.75.75 DNS?

✅ Fast Internet Access

Comcast optimizes these DNS servers for their own network, offering fast name resolution for quicker page loading.

✅ Low Latency

For Comcast users, the 75.75.75.75 DNS typically has low latency, meaning requests are resolved quickly.

✅ Stable and Reliable

This DNS server is designed for round-the-clock uptime with minimal service interruptions.

✅ Easy to Configure

You can easily set this DNS manually in your router or network settings.

How to Use 75.75.75.75 as Your DNS Server

If you’re a Comcast user and want to set your DNS manually, follow these basic steps:

🌐 On Windows:

1. Go to Control Panel > Network and Internet > Network and Sharing Center.
2. Click on your network and choose Properties.
3. Select Internet Protocol Version 4 (TCP/IPv4).
4. Click Use the following DNS server addresses.
5. Enter:
   • Preferred DNS server: 75.75.75.75
   • Alternate DNS server: 75.75.76.76
6. Save and restart your connection.

📱 On Android/iOS or Routers:

Settings may vary, but most modern devices allow you to enter custom DNS under Wi-Fi > Advanced > DNS settings.

Comparison with Other Public DNS Servers

FAQs

❓What DNS Server is 75.75.75.75?

It’s a public DNS server provided by Comcast Xfinity, mainly for their internet users. It helps translate website names into IP addresses so browsers can load sites faster.

❓Is 75.75.75.75 Safe to Use?

Yes. It’s a legitimate, secure DNS server provided by Comcast. It’s optimized for their users and generally safe from phishing or hijacking issues.

❓Can I Use 75.75.75.75 If I’m Not on Comcast?

You can try, but it may not work as efficiently. This DNS is optimized for Comcast/Xfinity users, so others may get slower results.

❓How to Bypass DNS 75.75.75.75 and 75.75.75.76?

If you want to use a different DNS server instead of Comcast’s defaults (75.75.75.75 and 75.75.75.76), follow these steps:

🔧 On Windows:

1. Go to Control Panel > Network and Sharing Center.
2. Click your active network and select Properties.
3. Click on Internet Protocol Version 4 (TCP/IPv4) and hit Properties.
4. Select Use the following DNS server addresses.
5. Replace with your preferred DNS:
   • Google DNS: 8.8.8.8, 8.8.4.4
   • Cloudflare: 1.1.1.1, 1.0.0.1
6. Click OK to save changes.

📱 On Android/iPhone:

• Go to Wi-Fi settings > Advanced > IP Settings > Static.
• Enter your preferred DNS manually.

🛑 Note: If Comcast enforces DNS via router-level restrictions, you may need to configure your DNS on the router or use a VPN to fully bypass ISP DNS settings.

❓How to Put 75.75.75.75 DNS in a Comcast Router?

If you want to manually configure the DNS in your Comcast/Xfinity router:

Steps:

1. Open a browser and go to http://10.0.0.1 (default Xfinity gateway).
2. Log in using your router credentials. Default username is usually admin, and password is password (unless changed).
3. Go to Gateway > Connection > WAN or Internet Settings.
4. Look for the DNS section and switch from “Obtain DNS Automatically” to Manual/Static.
5. Enter:
   • Primary DNS: 75.75.75.75
   • Secondary DNS: 75.75.76.76
6. Save the settings and reboot your router if needed.

If your router does not allow manual DNS changes, you can:

• Set DNS on each connected device individually.
• Use a custom router (e.g., Netgear, TP-Link) that allows DNS changes.

Final Thoughts

75.75.75.75 is a trusted, fast, and reliable DNS server for Comcast Xfinity users. If you’re on their network, it’s a great default choice. But if you’re looking for more global speed, privacy, or additional features, other DNS servers like Google or Cloudflare may suit you better.

Always test your DNS speed and privacy preferences before making a switch. A good DNS setup can make your browsing faster, more secure, and more stable.