Given that Tim Berners-Lee defined the U in URL to be universal (he was overruled by some Internet committee with no imagination): then, yes.
A URL identifies a resource. The resource can be anywhere (a website is just one possibility) and the URL can be anywhere too (in Google is a very limited possibility in some ways).
If you want an OPD editor to notice a URL, you got to put it somewhere where they will see it. For many categories, the last place they look is the suggested URL queue.
A hoarding is another term for a billboard. I saw the sign that said "New visitor attraction opening soon....http...". The site was up and running, so I added it.