Mpower Communications Expands Service in Northern California LOS ANGELES, July 6 /PRNewswire-FirstCall/ -- Mpower Communications Corp., a leading provider of broadband Internet access and local and long distance voice services, today announced it has expanded its communications network across the entire San Francisco Bay from downtown San Francisco down the peninsula to San Jose. "Our facilities-based network enables us to make cost-effective enhancements and increase our addressable market without any significant capital investment," said Mpower Communications Chairman and Chief Executive Officer Rolla P. Huff. "With this network expansion, Mpower's voice-over-IP based products and services are much more widely available." This new service territory will connect to Mpower's existing coverage area on the East side of the Bay and is a natural extension of the company's footprint in Northern California. Given that all of Mpower's voice services include free local calling within the LATA, calls from San Jose to Petaluma, Sunnyvale to Benicia, or any parts in between are free on Mpower service. "We are seeing increased demand for efficient and effective communications services across Northern California," added Mpower Communications President of Sales and Marketing Jim Ferguson. "Mpower delivers superior quality voice and data solutions that are supported locally and offer businesses of all types significant cost and operating efficiencies. Our expanded territory opens up new service areas for Mpower and provides ubiquitous coverage to multi- location customers across the Bay area." The company has three sales offices in the region in Walnut Creek, San Jose and Sacramento. Mpower has been operating in Northern California since July of 2000 and provides integrated communications services to thousands of business customers today. About Mpower Holding Corporation Mpower Holding Corporation (OTC:MPOW) (BULLETIN BOARD: MPOW) is the parent company of Mpower Communications, a leading facilities-based broadband communications provider offering a full range of data, telephony, Internet access and Web hosting services for small and medium-size business customers. Further information about the company can be found at http://www.mpowercom.com/. Forward-Looking Statements Under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, certain statements contained in this press release regarding our and/or management's intentions, hopes, beliefs, expectations or predictions of the future are forward-looking statements. These forward- looking statements are not historical facts and are only estimates or predictions. Actual results may differ materially from those projected as a result of risks and uncertainties including, but not limited to, sales growth, changes in federal or state telecommunications regulations, market acceptance of our product and service offerings, the liquidity of our common stock, our ability to secure adequate financing or equity capital to fund our operations and network expansion, our ability to manage growth and maintain a high level of customer service, the performance of our network and equipment, our ability to enter into strategic alliances or transactions, the cooperation of incumbent local exchange carriers in provisioning lines and interconnecting our equipment, regulatory approval processes, the effect of regulatory decisions on our access charges and operating costs, changes in technology, price competition and other market conditions and risks detailed from time to time in our filings with the Securities and Exchange Commission. We undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information, or otherwise. DATASOURCE: Mpower Communications Corp. CONTACT: Mpower Communications Investor: Gregg Clevenger, Chief Financial Officer, +1-585-218-6547, ; or Mpower Communications Media: Michele Sadwick, Vice President, +1-585-218-6542, ; or Investor Relations: Lester Rosenkrantz, Cameron Associates, +1-212-554-5486, , for Mpower Communications Web site: http://www.mpowercom.com/

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