2 Messages
Blogspot domains extremely slow on Xfinity DNS — fixed by Cloudflare DoH
Hello,
Over the past ~3 weeks I’ve noticed that Blogspot blogs (example: https://theuncarvedtest.blogspot.com/) are extremely slow or nearly unusable on my Xfinity connection.
Key findings from troubleshooting:
Friends on other ISPs (non-Xfinity) can load the same blogs instantly.
If I enable Secure DNS (DNS over HTTPS) in my browser and force queries to Cloudflare (1.1.1.1), the problem disappears immediately. Pages load fast.
If I use Xfinity’s default DNS resolvers, the same pages are very slow.
This issue happens across devices (Windows PC, phone, tablet) and persists even if I manually configure 1.1.1.1/8.8.8.8 at the router level, which suggests the Xfinity gateway/network may be intercepting standard DNS and forcing it through Comcast DNS.
Supporting details:
nslookupusing 1.1.1.1 returns instantly; the default (Xfinity DNS) is delayed.Traceroute to Blogspot content hosts looks normal, so the bottleneck appears to be DNS resolution, not routing.
This began around [insert approximate date, e.g., late August 2025].
Request: Please escalate this to Xfinity’s DNS/network engineering team. It looks like Xfinity’s recursive resolvers are introducing latency for Blogspot/Google domains. Other users will be affected unless this is fixed at the resolver level.
Thank you,
Andrew
Xfinity customer in Oakland, CA
XfinitySara
Official Employee
•
2.1K Messages
1 month ago
Hello, @user_mra826! Thanks for taking the time to create a post with these concerns and your request for escalation. The most effective and sustainable solution is to bypass our DNS completely at a network level, which your DoH findings already confirm is the correct approach.
1. Continue Using DoH: For individual devices, enabling DoH in your browser is a solid workaround. Most modern browsers like Chrome, Firefox, and Edge have this option in their security settings. This is the simplest fix and doesn't require any changes to your home network hardware.
2. Use a Third-Party Router: If you are using an Xfinity gateway, consider buying your own modem and a separate router. This will allow you to put the modem in "bridge mode," which turns off its routing and Wi-Fi capabilities, and then use your own router where you can freely configure DNS settings for all devices on your network. This is a popular long-term solution for advanced users who want more control over their home network.
3. Our team does have access to a ticketing system that can route certain requests to our engineering team. Could you please send our team a direct message to continue with this option?
To send a direct message:
To expedite your request, we ask that you please include your name and the service address alongside a detailed summary of your request/question. Thank you!
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