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Yes, if you have a Comcast device that supports it: https://www.xfinity.com/support/articles/xfinity-xfi-overview
Most retail consumer routers also have the capability. Depending on model, you can schedule or restrict internet access for certain times for certain devices on your network. Some, like my ASUS RT-AC88U router, even have smartphone apps that enable you to do just that, and even Amazon Alexa support so you can do it from your Echo device.