Counting rows, with a filter if something contains certain text, not exact text

Hi all

I'm trying to countrows of a column that contain different regions.  My column looks similar to this: 

[Region]

ANZ

ANZ, Americas

ANZ, EMEA

EMEA, Americas

I want to countrows (presumably will use a filter) but not [Region] = "ANZ" as that won't pick up the ANZ in the other rows.   where it is combined with another region.  What can I use to count the times ANZ appears in the column, regardless of the other values in the cell. 

Thanks!