Getting records where there are no repetitions

Hi, Im uploading my nginx logs to elasticsearch and want to do a query
where I only get users that have unique urls that don't repeat so for
example

body._ip=A has body._http_url=web1
body._ip=A has body._http_url=web2
body._ip=A has body._http_url=web1

body._ip=B has body._http_url=web5
body._ip=B has body._http_url=web6

if those are my documents, I want to get just body._ip=B because its the
only ip that does not repeat a website

is this possible with ES ? I have about 60 million records at any given
time so I need something efficient

thanks!!

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