I just want to know if there is any global/addon to precheck an URL while adding?
If not maybe someone has some ideas how to check it?

For websites like www.websitebuilder.com/sabrinaswebseite/home.htm
I cant check only websitebuilder.com, but checking the whole name is not enogh also, because we dont want to have www.websitebuilder.com/sabrinaswebseite/homeandhome.htm.

Maybe i have to send back everything that i can find to let an user decide if we want it?
And maybe add everything that is not really clear.