RCN Metro Provides Monadnock Capital Management with a High Performance Ethernet Network

HERNDON, VA, August 9, 2010 — RCN Metro Optical Networks, a division of RCN Corporation (NASDAQ: RCNI) and a premier provider of fiber optic-based network solutions, announced today that Monadnock Capital Management, a private investment firm, has selected RCN Metro as its provider for its Ethernet network that will connect its trading operations in Philadelphia to key financial exchanges in New York and New Jersey.

“RCN Metro has an excellent reputation for high quality network performance. Their ability to meet our implementation timeline, their impressive customer service and competitive pricing are superior to those of the other providers we considered,” said Daniel C. Bigelow, President of Monadnock Capital. “Trade execution is highly time-sensitive. With RCN Metro managing our network, we are confident that we have outstanding quality and reliability that is essential to the success of our operation.”

“Because of our focus on high quality support, our service offerings, our network reach and our dedicated employees, we are repeatedly chosen as the preferred provider for financial services institutions,” said Felipe Alvarez, President, RCN Metro. “Our connectivity to the major exchanges in Philadelphia, New Jersey, New York and Chicago combined with our industry- leading technology solutions give companies like Monadnock an edge in this competitive marketplace, allowing them to do their business quickly and securely.”

RCN Metro’s Ethernet service combines the reliability and ubiquity of Ethernet with next-generation metro area transport technology. The service offers point-to-point, switched point to multipoint and multipoint-to-multipoint Layer 2 service over dedicated access bandwidth, and enables extension of LAN infrastructure for WAN connectivity, or allows point-to-point private line services.  RCN Metro’s Ethernet solution offers dedicated and switched bandwidth to guarantee performance when you need it with rates starting at 1 Mbps ranging up to 10 Gbps.

About RCN Metro Optical Networks

RCN Metro,http://www.rcnmetro.com, is a premier provider of high-capacity transport services for carriers as well as large and medium-sized businesses. RCN Metro offers a comprehensive suite of services including: Ethernet, SONET, Wavelength, Video Transport, Internet and more. With a network leveraging unique rights-of-way, spanning from Maine to Virginia, out to Chicago and up to Toronto, RCN Metro deploys custom solutions to service providers as well as companies in the finance, hospitality, media, government, health care and education industries. RCN Metro is a wholly owned division of RCN Corporation.

About RCN Corporation

RCN Corporation, (NASDAQ: RCNI) www.rcn.com, is a competitive broadband services provider delivering all-digital and high definition video, high-speed internet and premium voice services to residential and small-medium business customers under the brand names of RCN and RCN Business Services, respectively. In addition, through its RCN Metro Optical Networks business unit, RCN delivers fiber-based high-capacity data transport services to large commercial customers, primarily large enterprises and carriers, targeting the metropolitan central business districts in the company’s geographic markets. RCN’s primary service areas include Washington, D.C., Philadelphia, Lehigh Valley (PA), New York City, Boston and Chicago. (RCNI-G)