… 'can be found in' 'can be found on' ? (Prepositions)

Question

Which is the correct way of saying,

the document can be found in www.example.com/ark

or

the document can be found on www.example.com/ark
or

the document is located at www.example.com/ark

Answer 1

Since URLs give the location of an internet resource,

"the document is located at www.example.com/ark"

is correct. If instead of the URL you were using the name of the website, eg. 'Ark', then you could say:

"the document is located on Ark"

Answer 2

I would say that "at" is your best choice because it is "at" a particular location.