Google has updated its favicon search developer documentation to now say that you don’t need to host the favicon in the same domain in order to be eligible for a favicon in Google Search results. Google removed the line, “the URL must be in the same domain as the home page.”

Here is a screenshot of what changed in the old documentation:

Google posted “February 23: Removed the hosting location requirement from the favicon documentation; you don’t need to host the favicon in the same domain in order to be eligible for a favicon in Google Search results.”

So you no longer need to ensure the favicon is on the same domain as the site to be eligible to show a favicon in Google Search.

Forum discussion at Twitter.