Gregg Siebert, executive vice president of Cablevision, said Thursday the company is "comfortable" with its debt levels but it will seek to refinance some upcoming debt maturities in the months ahead as interest rates become more favorable.

Cablevision had $11.8 billion in debt outstanding at the end of its second quarter, and its debt load has been a prime concern for investors since the global financial crisis shook Wall Street.

"The bigger concern is making sure we get our maturity schedule in order, so we're confident we can effectively refinance," said Siebert on a conference call with analysts following its second-quarter earnings release. "We're confident we can refinance today but it would be prudent for us" to explore refinancing some debt scheduled to mature in 2011, 2012 and 2013 as interest rates become more attractive.

Siebert said the company doesn't anticipate adding to the debt load carried by its MSG business as the company seeks to spin off the unit, but it's confident MSG's balance sheet could handle more leverage.

-By Nat Worden, Dow Jones Newswires; (212) 416-2472; nat.worden@dowjones.com