Count Unique IP Address in Google Sheet

I have a list of IP addresses in Col D

In Col A I've tried the following:

=SUM(IF(FREQUENCY(IF(LEN(D1:D52391)>0,MATCH(D1:D52391,D1:D52391,0),""), IF(LEN(D1:D52391)>0,MATCH(D1:D52391,D1:D52391,0),""))>0,1))

According to Microsofts KB its supposed to:

Count the number of unique text and number values in cells D1:D52391 , but do not count blank cells or text values.

Instead it only gives me a value of 1. For the above sample I would expect 3 and for my live data I would expect much more. Thanks.


The formula works (as mentioned by chris neilsen) as an Array formula, to enable this Array functionality you have to press Ctrl + Shift + Enter instead of simply Enter

Doing so will show 3 with your sample data.

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