Time Warner Cable took to its blog page to offer more information on its footprint-wide broadband outage yesterday, and also apologized for the incident.

The outage, which lasted about an hour and knocked out service to Time Warner Cable’s 11.4 million data subscribers, occurred after the cable operator conducted overnight network maintenance. Time Warner Cable said it was managing its IP addresses when an “erroneous configuration was propagated throughout our national backbone, resulting in a network outage.”

“We immediately identified and corrected the root cause of the issue and restored service by 7:30 a.m. ET,” Time Warner Cable wrote in its blog. “We apologize for any inconvenience this caused our customers.

“A failure of this size is very serious and we are taking the necessary steps to improve our processes with the objective of making sure this doesn’t happen again.”

The outage came on the heels of the Federal Communications Commission fining Time Warner Cable earlier in the week $1.1 million to resolve outage reporting violations.

The FCC found that Time Warner Cable did not report disruptions in service to its networks to the FCC in a timely enough manner. In addition to the payment, the company is submitting a three-year compliance plan to make sure it will comply with the reporting rules.

The outage was also a black eye for Time Warner Cable as the FCC is currently reviwing Comcast’s $45 billion bid to buy Time Warner Cable, which is now slated to close early next year instead of the end of this year.

The Associated Press contributed to this report.