EXHIBIT 12

CROWN CASTLE INTERNATIONAL CORP.

COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES AND

EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

(DOLLARS IN THOUSANDS)

	Years Ended December 31,
	2013			2012			2011			2010			2009
Computation of earnings:
Income (loss) before income taxes	$	292,529		$	100,827		$	179,807		$	(338,105	)	$	(190,523	)
Add:
Fixed charges (as computed below)	762,657			727,472			620,871			600,295			551,288
Subtract:
Interest capitalized	(1,832		)	(2,335		)	(265		)	—			—
	$	1,053,354		$	825,964		$	800,413		$	262,190		$	360,765
Computation of fixed charges and combined fixed charges and preferred stock dividends and losses on purchases of preferred stock:
Interest expense	$	491,041		$	491,184		$	404,968		$	406,222		$	386,447
Amortized premiums, discounts and capitalized expenses related to indebtedness	98,589			109,860			102,883			84,047			59,435
Interest capitalized	1,832			2,335			265			—			—
Interest component of operating lease expense	171,195			124,093			112,755			110,026			105,406
Fixed charges	762,657			727,472			620,871			600,295			551,288
Dividends on preferred stock and losses on purchases of preferred stock	11,363			2,629			22,940			20,806			20,806
Combined fixed charges and preferred stock dividends and losses on purchases of preferred stock	$	774,020		$	730,101		$	643,811		$	621,101		$	572,094
Ratio of earnings to fixed charges	1.4			1.1			1.3			—			—
(Deficiency) excess of earnings to cover fixed charges	$	290,697		$	98,492		$	179,542		$	(338,105	)	$	(190,523	)
Ratio of earnings to combined fixed charges and preferred stock dividends and losses on purchases of preferred stock	1.4			1.1			1.2			—			—
(Deficiency) excess of earnings to cover combined fixed charges and preferred stock dividends and losses on purchases of preferred stock	$	279,334		$	95,863		$	156,602		$	(358,911	)	$	(211,329	)