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Inquiries about IRInquiries about IR

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Inquiries about NTT's research and developmentInquiries about NTT's research
and development

For inquiries about NTT's research and development, please contact us via the following email address:

Inquiries about SustainabilityInquiries about Sustainability

For inquiries about Sustainability at NTT, please contact us from here.

Inquiries about NTT's environmental activitiesInquiries about NTT's
environmental activities

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Inquiries about procurementInquiries about procurement

For inquiries about NTT's procurement and introduction of products, please contact us from here.

  • Inquiries about procurement

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  • Product Introduction Form

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Inquiries about Intellectual Property CenterInquiries about Intellectual
Property Center

For inquiries about Intellectual Property Center, please contact us from here.

Inquiries about NTT Technology Licensing SiteInquiries about NTT
Technology Licensing Site

For inquiries about NTT Technology Licensing Site, please contact us from here.

Other inquiries concerning NTT holding companyOther inquiries
concerning NTT holding company

For inquiries other than the above, please contact us from here.

Please contact NTT Group companies regarding to inquiries about businesses and services.

Inquiries to NTT Group companies

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Evaluation by Society

    • EP100 EV100

      NTT is the first telecommunications operator to become a member of global initiatives to make smarter use of energy, “EP100” and “EV100” (Oct. 2018)

    • CSDE

      Established a council to promote secure digital economy together with multi-national companies

    • Logo image “2021 CONSTITUENT MSCI JAPAN ESG SELECT LEADERS INDEX”
    • FTSE4Good
    • FTSE Blossom Japan