https://www.centurylink.com/home/help/internet/modems-and-routers/advanced-setup/blocking-filtering.html
Blocking & Filtering - Advanced Modem Setup | CenturyLink
Learn how to implement service and website blocking and set access schedules in your modem settings.
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https://www.jaist.ac.jp/iscenter/en/mail/url-reputation/
Research Center for Advanced Computing Infrastructure: URL Filtering
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https://ghost.org/changelog/filtering/
Segment members with advanced filtering
Oct 7, 2021 - We've just added powerful filtering tools to the member dashboard, allowing you to create segments and carry out bulk actions such as adding or removing...
segmentmembersadvancedfiltering