The information to the right of the pair of forward slashes represents what is referred to as the fully qualified domain name (FQDN) of the destination computer. That name can be considered to represent a position in an inverted tree structured directory where the suffix (.gov) indicates the address is part of the government domain space.
Do you really think that everything is absolutely fine with that clause grammatically? I asked a friend of mine who is a native English speaker living in the U.S. and he told me that there was nothing wrong with that sentence. I don't know about you, but I really want to place a that between suffix and indicates or, as another possible solution, replace indicates with indicating. Otherwise, the grammatical structure just doesn't sound right to my ears. What do you think?