LabelHash.com was built predominantly as an Ethereum Name Service (ENS) research tool. Monitoring and tracking domain names is a core offering of the service.
To add domains to your account click the 'Add Names' toggle at the top of the home screen. You can then enter a list of the names that you want to add to your account in the text area (one per line), and click submit.
Currently LabelHash only supports the .eth namespace. Any lines that do not contain the .eth extension suffix will have it automatically added.
You can optionally add any number of tags. Tags are used across LabelHash.com for organising, monitoring, and managing domain names.
You can find out more here: The LabelHash tagging system.
The system will display the results of your submission. It will outline which names were added to your account as well as any that were not (and why).