Cox has started charging overage fees to customers who exceed their data limits in California, bringing the nation's third largest cable company a bit closer to nationwide deployment of data caps.
Previously, Cox's California customers technically had monthly caps, but there was no enforcement of overage fees.
Customers who signed up for the 1Gbps "Gigablast" service prior to September 26 of this year will get unlimited data plans at no extra charge, while all other California customers will have a 1TB (1,024GB) cap.
But while Cox customers in some other states can pay an extra $50 for unlimited data, that option doesn't seem to be available in any of Cox's four California markets (Orange County, Palos Verdes, San Diego, and Santa Barbara).
Cox posts region-by-region details of its data caps and overage fees at this webpage.
Before this week, Cox was already enforcing data caps and overage fees in Arizona, Arkansas, Connecticut, Florida, Georgia, Idaho, Iowa, Kansas, Louisiana, Nebraska, Nevada, Ohio, and Oklahoma.