Use an AI formula to count unique domains in your filtered table:
1. Add a new "formula" column to your table
2. Choose "Ask question about items with AI" from the column options
3. Prompt the AI to count the unique domains from your domain column
The AI will generate the appropriate code to count unique values. You can also use the "Normalize and Deduplicate a List" integration which removes duplicate entries and provides both a deduped list object and string output.
The AI might not give you exactly what you need on the first try - iterate on your prompts or modify the generated code using the preview feature .