In light of host names such as "150.14.233.64.transedge.com", the "blocks whole IP network" example should be made unambiguous:
Thanks for catching that--it is now in the beta code. --CliffordAdams
\.foocorp.com$ (blocks hosts ending with .foocorp.com)
^123.21.3.9$ (blocks exact IP address)
^123.21.3. (blocks whole 123.21.3.* IP network)
The dots in the regexes are not properly escaped. Suggested replacement (also showing comment functionality):
# blocks hosts ending with .foocorp.com
\.foocorp\.com$
# blocks exact IP address
^123\.21\.3\.9$
# blocks whole 123.21.3.* IP network
^123\.21\.3\.\d+$