CoreSite, an American Tower company, is a privately owned entity headquartered in the US. Founded in 2001 and employing approximately 530 individuals, the company operates in IT services and IT consulting. It specializes in advanced hybrid IT solutions that leverage interconnected data center campuses, designed to enable enterprises, cloud, network, and IT service providers to optimize their digital business.
CoreSite's record leasing activity contributed to American Tower's raised 2026 outlook. On July 28, American Tower (NYSE: AMT), CoreSite's parent company, reported that stronger second-quarter results, driven by CoreSite's performance, led to a revised forecast. The company saw total revenue increase 4.7% to $2.75 billion, and property revenue advance 6.3% to $2.69 billion. Previously, on July 14, Harbor Link Holdings expanded its underground fiber network into CoreSite’s DC2 data center in Washington D.C., adding new connectivity infrastructure. This expansion aims to increase carrier diversity and network resiliency across the Washington D.C. and Northern Virginia markets. This follows CoreSite's release of its 2026 State of the Data Center Report on July 8, which examines how enterprise IT strategies are evolving as organizations manage hybrid infrastructure.