They also have Fiber for all office spaces in Santa Rosa within vicinity of the Sonoma County Airport. I've used Sonic since dialup/PPP in 1997.
The Airport fiber is kick ass and enterprise grade -- 1000 down/100 up for very reasonable prices (sub $1k if you are getting a CIDR block of any size).
Uptime has been great, even during the wildfires which burnt a number of sonic's staff out of their houses.