After looking further into the suggestions and your warning, we decided to sample data from the pages with the highest historical traffic to prove out the business case before building out a new rule or doing anything more complicated.  Thank you @Jennifer_Dungan , @Harveer_SinghGi1 , @MandyGeorge ....

I currently have a custom list of 2000+ product detail pages that were removed from a site with multiple language variations. To answer questions about behaviors of visitors that had been to those pages (ie. changes in site search behavior or conversions), I want to create a visitor segment. I wante...

You could activate the response token for geo.dma and use the designated market area. Not sure if that will be specific enough to meet your needs, but it might be one option to set up the audience.

This issue just came up for us. In my testing, it required "qwer.abba.com" unless you toggle to use regex. Seeing the reply from @leocwlau, is there a reason you would use Custom JavaScript over the Core Component?