RCN Now Available at CoreSite’s Chicago Data Center

Fourth deployment underscores successful partnership

Denver, CO – August 28, 2019 — CoreSite Realty Corporation (NYSE:COR), a premier provider of secure, reliable, high-performance data center and interconnection solutions in major U.S. metropolitan areas, announced that RCN Business Solutions deployed its Wavelength Division Multiplexing (WDM) and ethernet portfolio services at CoreSite’s CH1 Data Center in Chicago. CoreSite’s Chicago location provides competitive, flexible data storage offerings in a key market for RCN Business Solutions. In addition to serving network providers like RCN, CoreSite serves enterprise organizations and cloud providers including providing connectivity to major cloud onramps such as AWS, Microsoft and Google.

“We’re launching our reliable business solutions in CoreSite’s Chicago data center, as we continue to scale solutions to suit the needs in serving our customers,” said Patrick Knorr, CCO and EVP of RCN, Grande and Wave. “CoreSite’s locations offer our enterprise clients the flexibility and resiliency they need, with an attention to the customer experience and ease of doing business that really sets them apart. This is a valuable partnership, and we look forward to continuing to work with the CoreSite team.”

A leading provider of high-speed broadband communications and fiber infrastructure solutions for businesses of all sizes, RCN is also located at CoreSite data centers in Boston, Washington DC and the New York area, providing its customers its broad suite of services. RCN Business Solutions’ WDM provides high-speed, reliable and secure end-to-end connectivity with up to 100 Gigabits between locations and data centers. For its data storage needs, RCN selected CoreSite for its well-established presence within these markets, including its robust ecosystem of connected businesses and track record of operational excellence.

“We are pleased RCN selected CoreSite to meet their growing needs and we are glad to serve them in our interconnection-rich, edge markets,” said Ben Green, CoreSite’s Vice President of Sales, Network and Mobility. “RCN’s business solutions enrich our ecosystem as they help enterprise organizations and cloud and content providers with their connection needs.”

About RCN, Grande Communications and Wave Business Solutions
RCN Telecom Services, LLC (www.rcn.com) Grande Communications (www.mygrande.com) and Wave Business (www.wavebroadband.com) operate as a single business solutions organization and deliver competitive fiber services in seven of the top 10 largest metro areas throughout the United States. They provide industry-leading high-speed internet, broadband communications solutions, digital TV, voice, phone services and fiber infrastructure solutions for businesses of all sizes. Delivered through a wholly-owned, state-of-the-art fiber-rich network and, together, RCN, Grande and Wave serves areas of Massachusetts, Chicago, Pennsylvania, New York City, and Washington, DC. (RCN); Texas (Grande Communications) and Washington, Oregon and California (Wave Broadband). To learn more about RCN Business Solutions, visit www.rcn.com/business.

About CoreSite
CoreSite Realty Corporation (NYSE:COR) delivers secure, reliable, high-performance data center and interconnection solutions to a growing customer ecosystem across eight key North American markets. More than 1,350 of the world’s leading enterprises, network operators, cloud providers, and supporting service providers choose CoreSite to connect, protect and optimize their performance-sensitive data, applications and computing workloads. Our scalable, flexible solutions and 450+ dedicated employees consistently deliver unmatched data center options — all of which leads to a best-in-class customer experience and lasting relationships. For more information, visit www.CoreSite.com.

Forward Looking Statements
This press release may contain forward-looking statements within the meaning of the federal securities laws. Forward-looking statements relate to expectations, beliefs, projections, future plans and strategies, anticipated events or trends and similar expressions concerning matters that are not historical facts. In some cases, you can identify forward-looking statements by the use of forward-looking terminology such as “believes,” “expects,” “may,” “will,” “should,” “seeks,” “approximately,” “intends,” “plans,” “pro forma,” “estimates” or “anticipates” or the negative of these words and phrases or similar words or phrases that are predictions of or indicate future events or trends and that do not relate solely to historical matters. Forward-looking statements involve known and unknown risks, uncertainties, assumptions and contingencies, many of which are beyond CoreSite’s control that may cause actual results to differ significantly from those expressed in any forward-looking statement. These risks include, without limitation: the geographic concentration of the Company’s data centers in certain markets and any adverse developments in local economic conditions or the amount of supply of or demand for data center space in these markets; fluctuations in interest rates and increased operating costs; difficulties in identifying properties to acquire and completing acquisitions; significant industry competition, including indirect competition from cloud service providers; failure to obtain necessary outside financing; the ability to service existing debt; the failure to qualify or maintain its status as a REIT; financial market fluctuations; changes in real estate and zoning laws and increases in real property tax rates; and other factors affecting the real estate industry generally. All forward-looking statements reflect the Company’s good faith beliefs, assumptions and expectations, but they are not guarantees of future performance. Furthermore, the Company disclaims any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, of new information, data or methods, future events or other changes. For a further discussion of these and other factors that could cause the Company’s future results to differ materially from any forward-looking statements, see the section entitled “Risk Factors” in its most recent annual report on Form 10-K, and other risks described in documents subsequently filed by the Company from time to time with the Securities and Exchange Commission.

CoreSite Contact
Carole Jorgensen
Vice President of Investor Relations and Corporate Communications