This is pretty much possible with Notezilla .
Notezilla uses the title of the windows to show or hide a particular sticky note. In case if you wish to see the note on all the pages of a particular website, then in such case you would need to use the 'wildcard' method.
To match only a part of the window title, double click on any window title that is listed and prefix or suffix the title with the asterisk (*) wildcard.
To understand how it works more clearly, watch this video:
However, Notezilla cannot detect the website URL. So it is not possible to show the note based on the domain name. Most websites have the name in their title also. So you can use the above mentioned method is most cases.