Exhibit 12.1

CCO HOLDINGS, LLC AND SUBSIDIARIES

RATIO OF EARNINGS TO FIXED CHARGES CALCULATION

(dollars in millions)

	For the Year Ended December 31,											For the Six Months Ended June 30,
	2012		2013			2014		2015		2016		2016		2017
Earnings
Income (loss) before Noncontrolling Interest and Income Taxes	$	10	$	(57	)	$	75	$	144	$	1,460	$	420	$	472
Fixed Charges		811		862			898		850		2,144		668		1,488
Total Earnings		821		805			973		994		3,604		1,088		1,960
Fixed Charges
Interest Expense	$	780	$	834		$	868	$	822	$	2,092	$	651	$	1,452
Amortization of Debt Costs		24		20			21		18		31		11		21
Interest Element of Rentals		7		8			9		10		21		6		15
Total Fixed Charges	$	811	$	862		$	898	$	850	$	2,144	$	668	$	1,488
Ratio of Earnings to Fixed Charges(1)		1.01		—			1.08		1.17		1.68		1.63		1.32

(1) Earnings for the year ended December 31, 2013 were insufficient to cover fixed charges by $57 million. As a result of such deficiency, the ratio is not presented above.