Why am I getting a Fastly unknown domain error on home WiFi?

November 12, 2026 3 answers
Asked by !mango+mechanics

Reddit won't load on my home WiFi and shows a Fastly unknown domain error. Other sites work, and I've already flushed DNS, renewed the network connection, and restarted the router and devices. What else should I check?

Answers

_tangent_approved_

Fastly provides content delivery for Reddit, so the error could be on the service side rather than in your router. Check a service status or outage reporting site and give it a little time before changing a bunch of settings.

Other sites working doesn't rule out a problem with the path to this particular service.

!mango+mechanics:

What if it's still happening after a few days?

tin_can_tuesday:

Compare results on another network and contact your internet provider if it only fails on your home connection. Include the error and when it started.

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Jasperish

Try another browser or a private window, then clear the site's cache and cookies if that helps. It's a quick way to check for a browser-specific problem, though clearing cookies won't necessarily fix this error.

A6_syntax_sundae:

Testing another device on the same WiFi can help too. If one works and the other doesn't, look more closely at the device or browser settings.

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mIxEd_bag_of_buttons

Try the same device on mobile data or another network, if available. You can also test a VPN. If either works while home WiFi doesn't, that points toward a network-specific issue, but it doesn't prove your provider is blocking anything.

Changing DNS might be worth a test, but it isn't guaranteed to help. Keep track of which combinations work so you have something concrete to share with support.

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