@casino Here’s a list of the top level pinterest domains:
pinterest.com
pinterest.co.uk
pinterest.es
pinterest.jp
pinterest.de
pinterest.ca
pinterest.fr
pinterest.com.mx
pinterest.com.au
pinterest.co.kr
pinterest.ru
pinterest.it
pinterest.se
pinterest.ie
pinterest.ph
pinterest.pt
pinterest.cl
pinterest.at
pinterest.ch
pinterest.nz
pinterest.dk
pinterest.hu
As of now, you have to list each of these. We should be able to add blocking by keyword match in a future update.