NEW YORK, March 7, 2011 (GLOBE NEWSWIRE) -- deltathree, Inc. (OTCQB:DDDC), a global provider of video and voice over Internet Protocol (VoIP) telephony services, products, hosted solutions and infrastructures for service providers, resellers and direct consumers, announced that the company's common stock is now publicly quoted and traded exclusively on the OTCQB electronic quotation and trading system, operated by the OTC Markets Group, Inc. This follows a period in which the company's common stock was being quoted and traded simultaneously on both the OTCBB and the OTCQB. This change was not caused by any action or inaction by deltathree, which continues to be in full compliance with all of its reporting requirements, but rather a migration of all of the market makers in deltathree's common stock to the OTC Markets. OTC Markets runs the world's largest electronic interdealer quotation system for broker-dealers to trade unlisted securities and operates an interdealer quotation system and electronic messaging service, called OTC Link TM, for broker-dealers to trade OTC equities. Recently there has been a large migration of brokers from the OTCBB quotation system to the OTC Link quotation system, as the OTCBB quotation system continues to operate on a telephonic trading platform in contrast to the electronic platform provided by OTC Link. There are three tiers in the OTC marketplace. The first tier is OTCQX, for companies that meet certain financial standards. The second tier is OTCQB for companies, like deltathree, that are current in their reporting requirements with the Securities and Exchange Commission. The third tier is designated OTC Pink, which is the marketplace for speculative trading. To access quotes for deltathree's common stock under the symbol "DDDC" and view recent trading activity, investors can visit http://www.otcmarkets.com/stock/dddc/quote . About OTC Markets Group OTC Markets Group Inc. operates the world's largest electronic marketplace for broker-dealers to trade unlisted stocks. The OTC Link platform supports an open network of competing broker-dealers that provide investors with the best prices in over 10,000 OTC securities. In 2010, securities on OTC Link traded over $144 billion in dollar volume, making it the third largest U.S. equity trading venue after NASDAQ and the New York Stock Exchange.