Are typographically similar domain names prosecutable as TM infringements in USA, Canada, Europe? Not sure what the current legal climate is around this. As a for instance, could Amazon successfully sue amazoo/amazom/amazok.com etc?
As long as the trademark holder can demonstrate the typo is possibly riding on their mark, yes. How to go about it depends on a variety of things like what's the domain name extension, what the law says in their jurisdiction, etc.