ListSource Criteria for Small Multifamily (1 - 4 Units)

[Jay Newman]

Not sure if this is the right category or not, but I have a question on ListSource criteria. I'm trying to put together a mailing list for small multifamilies. I assume that number next to the selected property type is the number of properties that the website has on file (see picture below). If so, why is it showing zeroes for triplex & quad? I know that there are some 3 - 4 units in the zip codes that I have entered. Is it possible that there is another category that these types of properties sometimes fall under? I included Residential: Multifamily thinking this might be the case, but I didn't want to pull the trigger on some listings that I don't need.

Thanks!