NTT Docomo USA

NTT Docomo USA is the United States subsidiary of Japan's NTT Docomo, Inc. It was established on November 1, 1999, initially locating its U.S. headquarters in San Jose, California. On July 9, 2001, the headquarters moved to New York City. The company has also maintained an office in Washington, D.C., and a research-laboratory presence in San Jose, giving it administrative, governmental, commercial, and technical coverage across several U.S. locations. The subsidiary's most visible consumer initiative was Docomo USA Wireless, a mobile virtual network operator launched on April 6, 2011. Rather than operating an independent nationwide radio-access network, the service used a host carrier arrangement and was designed principally for Japanese customers living in, working in, or traveling through the United States. Its proposition connected the NTT Docomo brand and Japanese-language customer orientation with mobile service in the American market. The network partnership with T-Mobile was updated in September 2013. Docomo USA Wireless offered a selection of mainstream feature phones, smartphones, and connected handsets during its operating period. Listed devices included Nokia models such as the 2720, 2730, and 500; Motorola's WX345; BlackBerry Curve 3G 9300 and Curve 8520 models; and Google Nexus S and Galaxy Nexus smartphones. These products reflected the service's position as a focused market offering rather than a broad U.S. handset ecosystem comparable with the largest American carriers. Beyond telecommunications retailing, NTT Docomo USA has been associated with technical research and standards-oriented work. The company was noted for implementing an early open-source version of Secure Neighbor Discovery, or SEND, a cryptographic security mechanism intended to address threats affecting the IPv6 Neighbor Discovery Protocol. This work illustrates the subsidiary's role as more than a sales outlet: it also functioned as a U.S. base for technical development and experimentation relevant to network security. NTT Docomo USA should be distinguished from NTT Docomo's Japanese parent and from unrelated NTT businesses in the United States. The available reference material establishes its corporate relationship, U.S. locations, wireless-service launch, carrier partnership, device range, and networking research activity, but does not provide enough information to document current consumer-service availability, recent leadership, financial performance, or a current official website. Consequently, those aspects remain unspecified in this dossier.

NTT Docomo USA was formed on November 1, 1999, as the wholly owned United States subsidiary of NTT Docomo, Inc., the Japanese mobile-communications company. Its original headquarters were in San Jose, California. The location placed the subsidiary near the technology and telecommunications ecosystem of Silicon Valley and supported its research-related activities. On July 9, 2001, NTT Docomo USA moved its headquarters to New York City. It also maintained an office in Washington, D.C., and a research laboratory facility in San Jose, creating a distributed U.S. presence rather than a single-location operation. The subsidiary later entered the American mobile-service market through Docomo USA Wireless. The service began on April 6, 2011, as a mobile virtual network operator. Its principal target was the Japanese community and Japanese-speaking customers in the United States, allowing NTT Docomo to extend a familiar brand and customer proposition beyond Japan without building a separate nationwide U.S. cellular network. The service relied on a relationship with T-Mobile, which was updated in September 2013. The handset portfolio associated with Docomo USA Wireless included both feature phones and smartphones. Devices identified in reference material include the Nokia 2720, Nokia 2730, Motorola WX345, BlackBerry Curve 3G 9300, BlackBerry Curve 8520, Google Nexus S, Galaxy Nexus, and Nokia 500. The range indicates that the service operated as a focused carrier offering with selected compatible devices, rather than as a mass-market U.S. operator with the breadth of the country's largest carriers. NTT Docomo USA's activities also included technical research. It was noted for implementing an early open-source Secure Neighbor Discovery, or SEND, solution. SEND uses cryptographic methods to help counter threats to the IPv6 Neighbor Discovery Protocol, a core mechanism used by IPv6 networks. This technical work is significant because it shows the subsidiary's U.S. role extended beyond customer-facing mobile service to network engineering and security research. The supplied reference does not establish the current availability of Docomo USA Wireless, a current executive roster, financial results, or a current official web address. The documented record therefore supports describing NTT Docomo USA as an NTT Docomo subsidiary with U.S. headquarters in New York, additional U.S. locations, a historically documented MVNO service, and research capabilities, while leaving its present consumer-service status and recent corporate developments open for verification.

1. 2013T-Mobile partnership updated

   The carrier relationship supporting Docomo USA Wireless was updated in September 2013.

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2. 2011Docomo USA Wireless launches

   The subsidiary introduced Docomo USA Wireless as a mobile virtual network operator on April 6, 2011.

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3. 2001Headquarters move to New York City

   On July 9, 2001, the U.S. headquarters moved from San Jose to New York City; the company continued to maintain other U.S. locations.

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4. 1999NTT Docomo USA is established

   NTT Docomo established its wholly owned U.S. subsidiary on November 1, 1999, with its initial headquarters in San Jose, California.

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A U.S.-based NTT Docomo subsidiary focused on serving Japanese mobile users in the United States while also providing a base for telecommunications research and corporate activities.

• Docomo USA WirelessMobile virtual network operator service2011

  Docomo USA Wireless was NTT Docomo USA's U.S. mobile service, launched on April 6, 2011. It operated as a mobile virtual network operator and targeted Japanese customers in the United States. The service used a carrier partnership with T-Mobile, updated in September 2013, and was marketed through a focused selection of compatible mobile devices rather than a full-scale independently operated cellular network.

• Nokia 2720Mobile phone

  The Nokia 2720 was among the handsets listed in connection with Docomo USA Wireless. It represented the feature-phone segment of the service's device selection.

• Nokia 2730Mobile phone

  The Nokia 2730 was one of the Nokia handsets associated with Docomo USA Wireless, contributing to the operator's entry-level and feature-phone lineup.

• Motorola WX345Mobile phone

  The Motorola WX345 appeared in the documented Docomo USA Wireless device range. It was part of the service's selected catalog of compatible consumer handsets.

• BlackBerry Curve 3G 9300Smartphone

  The BlackBerry Curve 3G 9300 was listed as a Docomo USA Wireless device, extending the service's portfolio into business-oriented smartphones with mobile data and messaging capabilities.

• BlackBerry Curve 8520Smartphone

  The BlackBerry Curve 8520 was another smartphone offered within the historically documented Docomo USA Wireless device selection.

• Google Nexus SSmartphone

  The Google Nexus S was included among the Android smartphones associated with Docomo USA Wireless, reflecting the service's expansion beyond feature phones into contemporary smartphone products.

• Galaxy NexusSmartphone

  The Galaxy Nexus was listed as part of the Docomo USA Wireless smartphone offering and represented a later-generation Android device in the documented portfolio.

• Nokia 500Smartphone

  The Nokia 500 was among the Nokia devices documented for Docomo USA Wireless, adding a smartphone-format handset to the service's broader device selection.

• Secure Neighbor Discovery implementationNetwork-security technology

  NTT Docomo USA was noted for implementing an open-source Secure Neighbor Discovery solution. SEND applies cryptographic protection to help address security threats associated with IPv6 Neighbor Discovery, demonstrating the subsidiary's involvement in communications research in addition to wireless service operations.

• 2013Update the T-Mobile network partnershipStrategy

  Docomo USA Wireless depended on a host-network arrangement to provide mobile connectivity as an MVNO.

  What changed. The partnership with T-Mobile was updated in September 2013.

  Aftermath. The update continued the network arrangement supporting Docomo USA Wireless, although the available material does not specify its commercial terms or later outcome.

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• 2011Launch Docomo USA Wireless as an MVNOProduct launch

  NTT Docomo USA sought to provide branded mobile service in the United States, particularly for Japanese customers.

  What changed. The subsidiary launched Docomo USA Wireless on April 6, 2011, using the mobile virtual network operator model.

  Aftermath. The service operated with a selected handset portfolio and a network relationship with T-Mobile.

  Source
• 2001Relocate the U.S. headquarters to New York CityStrategy

  After its initial period in San Jose, the subsidiary changed the location of its principal U.S. headquarters.

  What changed. The headquarters officially moved to New York City on July 9, 2001, while offices and research facilities remained elsewhere in the country.

  Aftermath. NTT Docomo USA retained a presence in Washington, D.C., and San Jose, combining corporate and research functions across multiple locations.

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• 1999Establish a wholly owned U.S. subsidiaryStrategy

  NTT Docomo created a dedicated American subsidiary to support its activities in the United States.

  What changed. NTT Docomo USA was established on November 1, 1999, initially based in San Jose, California.

  Aftermath. The subsidiary developed a multi-location U.S. presence and later became the platform for the Docomo USA Wireless service.

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• 2013Docomo USA Wireless updates its T-Mobile partnership

  The service's partnership with T-Mobile was updated in September 2013.

  Other
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• 2011Docomo USA Wireless launches as an MVNO

  NTT Docomo USA launched Docomo USA Wireless on April 6, 2011, using a mobile virtual network operator model aimed at Japanese customers in the United States.

  Product launch
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• 2001U.S. headquarters move from San Jose to New York City

  The subsidiary officially relocated its U.S. headquarters to New York City on July 9, 2001, while retaining other U.S. facilities.

  Other
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• 1999NTT Docomo USA is established in the United States

  NTT Docomo established its wholly owned U.S. subsidiary on November 1, 1999.

  Other
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1. NTT Docomo USA