Which network are you using? If it's Wifi, can other machines on your network contact it? If it's carrier data plan...is it being blocked?
Update: 0.0.0.0 seems like a hosts file block to me. Any ad blockers? Adblock plus? Hosts file modifications?
Try USB networking - if you post a comment here asking for it i'll update the question & put in a tutorial (it's involved, and I only know how to do it on GNU/Linux machines)