I'm just starting with GIS, and I'm looking for a routing service that will allow me to avoid given regions on a map, or to build my own router that has this functionality. The site OpenRouteService.org has this capability, but the back-end of this website seems to be down for the last few days. So I'm wondering, what would be your advice for doing this? Either a service that will plot from point A to B given the constraint to avoid a region, or how to build my own version. Or a working clone of openrouteservice? What I've tried is downloading the github page of openrouteservice here:https://github.com/GIScience/openrouteservice. The provided .html gives a working front-end, but I have to say I'm a bit confused how to start getting the back-end working.
I should mention I'm looking for something that will work in the U.S. northeast. Openroute seems to not have the U.S. in its coverage area currently.