WordPress Speed Up Service | WordPress Website Maintenance Packages Why is a url with numbers, adding hyphens?, by simon_a6 We are just creating a new WordPress site, using parents in the url. ie. http://www.oursite.co.uk/thispage/2016. however, it is forcing the numeric bit to 2016-2. It’s the same with 2015. I did add one for 2010-2015, but that went through fine. there are no images called 2016, and no current pages called that, as this is a fresh out of the box site. So why would it do such a thing? if I go to Edit Slug, and make it 2017, it just adds the -2 back in again. Why is a url with numbers, adding hyphens?