Checking if a field exists or not

So I have a field, dst_geoip.country_code2, that I use to find the country code. Entries that actually have a country code have this field, entries that do not do not have this field. In the Discover tab, how do I a basically filter for "show me all entries that have dst_geoip.country_code2"? Thank you.

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That's the one :smile: