Outage

First. Check their site for official info on any possible local outages here;

https://www.xfinity.com/support/status 

Use a cell phone internet service, a public WiFi hotspot, or a neighbor's internet if you need to in order to check it.

Or you can use their Xfinity App: https://www.xfinity.com/apps 

@user_zc81ll Thanks for joining the community. The fastest way to check the service status is with our page here STATUS. It will show the latest update from the techs in the area, and is the same page the agents use in order to verify the status. If you sign in and add your number to the notification list, it will let you know immediately when service is restored.