tw telecom S-4 Registration of securities issued in business combination transactions

Exhibit 12

tw telecom inc.

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Amounts in Thousands)

	Three Months Ended March 31,				Years Ended December 31,
	2010		2009		2009		2008		2007			2006		2005
Income (loss) before income taxes	(4,087	)		3,561	$	30,332	(4,919	)	$	(53,820	)	(108,952	)	(108,064	)
Interest expense (net of amounts capitalized)	38,011			21,458		84,001	93,336			105,836		145,273		134,262
Interest factor on rentals	6,318			5,895		24,344	22,452			20,541		13,633		11,689
Estimated amortization of capitalized interest	639			596		2,263	2,142			1,937		1,737		1,519
Earnings available for fixed charges	40,882			31,509	$	140,940	113,011		$	74,494		51,691		39,406
Interest charges	38,592		$	22,112	$	86,421	96,241		$	108,219		147,627		137,139
Interest factor on rentals	6,318			5,895		24,344	22,452			20,541		13,633		11,689
Fixed charges	44,910			28,007		110,765	118,693			128,760		161,260		148,828
Ratio of earnings to fixed charges (1)	—			1.1		1.3	—			—		—		—

(1) The earnings for the three months ended March 31, 2010 and the years ended December 31, 2008, 2007, 2006 and 2005 were inadequate to cover total fixed charges. The coverage deficiencies for total fixed charges were $4.0 million, $5.7 million, $54.3 million, $109.6 million and $109.4 million, respectively.