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That is something different. If you want to run your app on a naked domain, they give you a set of A/AAA records you can use.

Search in that same document for "naked domain".

App Engine uses four anycast IP addresses:

you should read before you write.

> I'd like to map my app to a naked domain (such as http://example.com).

vs.

> App Engine does not currently provide a way to map static IP addresses to an application

the latter is that you own an IP and want to map it against your appengine.

the former is example.com -> appengine site.

(not related to google)