So you want to block threads.com and threads.net, but Mastodon UI is making it difficult?
Tip! Use Mastodon's Import function:
1. Create a file, any filename will do as long as it ends with `.csv`. For example: `blocked_domains.csv`.
2. Put these two lines in the file (without the backticks):
```
threads.com
threads.net
```
3. Save the file.
4. Go to the Mastodon import settings (`/settings/imports`).
5. In the form on this page, select import type "Domain blocking list".
6. In the form, select your newly created CSV file as the Data file.
7. In the form, select "Merge " instead of "Overwrite" (this should be the default value) as the import strategy.
8. Upload your file.
9. Profit!