Recently Noticed the DHCP ip provided from Xfinity is 10.0.x.x

I noticed that my DHCP IP address from Xfinity is now 10.0.0.x, which used to be 172.x.x.x and/or 54.x.x.x. Is this a new range of IPs that Xfinity is adding new, or am I just noticing it now? I work from home and just want to make sure.