IIRC DuckDuckGo might do something like that for search suggestions. For slightly improved privacy, lots of unrelated hosts can be grouped into blocks (maybe grouped by probability of access to make it harder to infer which domain from the block is the likely target).
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IIRC DuckDuckGo might do something like that for search suggestions. For slightly improved privacy, lots of unrelated hosts can be grouped into blocks (maybe grouped by probability of access to make it harder to infer which domain from the block is the likely target).