Tenant Concentration

3 Months Ended

Mar. 31, 2012

Tenant Concentration [Abstract]

Tenant Concentration

15. Tenant Concentration

For the three months ended March 31, 2012 and 2011, revenues recognized from subsidiaries of CenturyLink, Inc. comprised approximately 9.2% and 10.6% of total revenues, respectively. Other than noted here, for the three months ended March 31, 2012 and 2011, no single tenant comprised more than 10% of total revenues.