Directory · JP
Telecommunications in Japan
A register of firms and the professionals working at them in the Telecommunications sector based in Japan. Browse the public index, then filter or export on Kipplo.
Companies
164 on file
Vodafone Business
Vodafone Business is part of the Vodafone Group. We help businesses of every size to embrace positive change through digital communications technologies - today, tomorrow and into the future. We work with the world's largest multinational companies, fast growing enterprises, Government teams, ambitious start-ups and small businesses around the world. We can provide services globally, regionally and locally – mobile, fixed, unified communications, Internet of Things (IoT) and cloud and security - connecting the people, places and things that matter to businesses – wherever they are.#TogetherWeCan
10001+ staff
Ntt Docomo
NTT DOCOMO, Japan's largest telecommunications company, provides innovative, convenient and secure mobile services that enable customers to realize smarter lives. The company serves over 73 million customers in Japan via advanced wireless networks, including a nationwide LTE network and one of the world's most progressive LTE-Advanced networks. DOCOMO is a world-leading developer of 5G networks, which it plans to deploy in the 2020s by leveraging network function virtualization (NFV) and other technologies. DOCOMO is also driving innovation in NFC infrastructure and services, emerging IoT solutions and many other mobile-related initiatives. Outside Japan, the company provides technical and operational expertise to mobile operators and other partner companies, and contributes to the global standardization of new mobile technologies. Under its +d (pronounced plus d) initiatives, DOCOMO will create new added value with business partners to enrich people's lives with all-new services and businesses. The history of mobile communications parallels the history of NTT DOCOMO. Established in 1992, DOCOMO launched its first digital cellular phone service the next year and the world's first mobile Internet-services platform in It helped to establish the W-CDMA standard for mobile communications and then kick off the first 3G service based on this standard in 2001. The company also introduced one of the earliest commercial LTE services in 2010. Over the years DOCOMO has built up one of the globe's largest mobile subscriber bases, accounting for over half of the Japanese market.
10001+ staff
Kddi Corporation
We are Japan’s global telecommunications pioneer and a Global Fortune 500 company, providing our international customer base with data centers, networks, content delivery, system integration, and more around the world. If your business needs telecom support internationally, we are here at your service, operating in more than 303 locations across 109 cities worldwide. Our industry-leading Telehouse data center provides colocation at over 45 sites, primarily in North America, Europe, and Asia. Leveraging our strengths as a telecom provider, we combine our telecom network and top-quality data centers (Tier 3 and Tier 4 level) to provide a stress-free IT and telecom environment for our customers. With more than half a century of experience, we have been a leader in constructing submarine optical cables, particularly in the rapidly growing Asia-Pacific region. In Japan, we are widely known for our mobile services (“au”), with 80 million people currently choosing us as their mobile provider. To learn more about KDDI: Global website: Find you region from https://biz.kddi.com/english/region-list/ Telehouse website: Corporate videos: & showinfo=0
10001+ staff
Groundhog Technologies Inc
Founded in 2001, Groundhog Technologies is a global leader in the mobile network and user analytics, enabling operators to accurately pinpoint the location and experience of subscribers, mine deep network and user insights, and implement proactive solutions across various domains: Network & Operations, Customer Experience, Sales & Marketing, Digital Services, and Public Health. The company has also leveraged its 20 years hands-on experience working with Telco Data to enable operators to address the advertising and data monetization opportunity with a plug & play Data Enrichment Platform (DEP) and a Demand Side Platform (DSP) both for internal and external users. Visit our website to learn more about Groundhog Technologies MI digital advertising services: https://mi.ghtinc.com/
51 to 200 staff
Kvh
Innovative connectivity, engaging content, and versatile managed solutions – we create the integrated communications you need at sea, on the move, and on shore.
201 to 500 staff
Unabiz
UnaBiz is a global Massive IoT service provider and integrator that specialises in solution design, manufacturing, connectivity and data platform services across a hybrid of network communication technologies such as Sigfox 0G, LTE-M, NB-IoT and LoRaWAN, to power sustainable business growth. Founded in 2016, the company is headquartered in Singapore, with R&D centres in Taipei and Labège (FR), and operates regional sales offices in Tokyo, Paris, and Madrid, with virtual offices globally. UnaBiz owns the Sigfox 0G technology that connects over 13 million sensors for 1,500 B2B customers on the global 0G Network, owned and commercialised by 70+ national Operators worldwide. The company focuses on Utilities, Supply Chain & Logistics, Security and Facilities & Building Management. UnaBiz envisions a closely connected world powered by simple technology because it believes in “Less is More”. By uniting people and IoT technology, it aims to create an impact on a massive scale, to help every person and every organisation on the planet live smarter, simpler, and more sustainable way.
51 to 200 staff
Soracom
Soracom is a global provider of smart IoT connectivity, offering cloud-native wireless service designed specifically for the needs of connected devices. Founded in 2015 to create a more connected world by removing the barriers to IoT development, Soracom now serves over customers across all industries, from agriculture, energy, construction and transportation to consumer electronics, manufacturing, real estate and healthcare. From global enterprises to fast-growing start-ups, customers trust Soracom for affordable, reliable connectivity that accelerates speed to market and makes it easy to connect to the cloud. Soracom is an AWS IoT Competency Partner.
51 to 200 staff
Spirent Communications
About Spirent Communications Spirent, now part of Keysight, delivers industry-leading solutions in wireless, positioning, and lifecycle assurance. We provide innovative products, services, and managed solutions that address the test, assurance, and automation challenges of a new generation of technologies, including 5G, cloud, autonomous vehicles, and beyond. From testing in the lab to testing in the real world, Spirent helps companies deliver on their promise to their customers of a new generation of connected devices and technologies. Spirent is its people. When you join the Spirent team, you will join forces and work alongside some of the industry’s most passionate subject matter experts. In an environment of innovation, you will find a place where you can grow, think, explore, create, and make change happen. Interested in a career at Spirent? Visit Spirent.com/Careers #Spirent #LifeAtSpirent
1001 to 5000 staff
Cambridge Industries Group
Mission: To be an innovative global leader in designing and manufacturing of high quality and state-of-the-art networking equipment with superior customer support at competitive cost. Highlights: CIG is a publicly-traded networking company headquartered in Shanghai with major R&D, Sales, Marketing and Customer Support presence in USA (Santa Clara, CA) and Japan (Tokyo). Commitment to the “highest” standards in R&D innovation, quality manufacturing, and customer support is the company's mission. CIG's product domain expertise includes carrier-grade broadband access (xPON), optical modules (transceivers), SDN/NFV-enabled white-box switches and wired/wireless home-networking devices including Wi-Fi Access Points, Residential Gateways, and Routers (Wi-Fi, G.hn, MoCA). CIG has extensive experience working with many technology partners around the globe. Company ’s business model includes JDM (joint development manufacturer), ODM (original design manufacturer), OEM (original equipment manufacturer) and in some cases CM (contract manufacturer). CIG has an elite engineering team of 600+ spanned globally specialized in various disciplines including hardware, software, firmware, mechanical, test, quality assurance and compliance. CIG has sister manufacturing partners in Germany, Japan, and Thailand. CIG is rapidly embracing factory automation towards implementing the "lights-out manufacturing methodology.” In 2017, CIG shipped 30M+ finished products for deployment at global tier-1/2 Service Providers. CIG is also featured in numerous prestigious scientific journals including the MIT Technology Review and others.
1001 to 5000 staff
Rakuten Mobile, Inc
Rakuten Mobile is a Rakuten Group company responsible for mobile communications, centered on its mobile network operator (MNO) business. Through continuous innovation and the deployment of advanced technology, Rakuten Mobile aims to redefine expectations in the mobile communications industry in order to provide appealing and convenient services for diverse customer needs.
1001 to 5000 staff
Revcomm Inc
RevComm is a Tokyo-based technology company that leverages AI and voice technology to solve communication challenges in the workplace. Driven by the mission of “reinventing communication and creating a society where people care about each other,” RevComm transforms business conversations into big data through its proprietary AI products: MiiTel Phone (Telephone conversation analytics), MiiTel Meetings (Web conferencing analytics) and MiiTel RecPod (Face-to-face meeting analytics)
201 to 500 staff
Nippon Telegraph And Telephone
Nippon Telegraph and Telephone The Japan Telegraph and Telephone Corporation is a Japanese telecommunications company headquartered in Tokyo, Japan. Wikipedia Stock price: 9432 (TYO) JP¥ 5,170 -137.00 (-2.58%) Revenue: 11.39 lakh crores JPY (2017) CEO: Hiroo Unoura (Jun 2012–) Headquarters: Chiyoda, Tokyo, Japan Number of employees: 2,74,844 (2016) Nippon Telegraph & Tel is the fourth-largest telephone operating company by total revenue ($94.2 B USD). The Japan Telegraph and Telephone Corporation ( Nippon Denshin Denwa Kabushiki-gaisha), is a Japanese telecommunications company headquartered in Tokyo, Japan. Ranked 65th in Fortune Global 500, Nippon Telegraph and Telephone is the fourth largest telecommunications company in the world in terms of revenue. The company is incorporated pursuant to the Nippon Telegraph and Telephone Law (Law Concerning Japan Telegraph and Telephone Corporation, Etc.).[3] The purpose of the company defined by the Law is to own all the shares issued by Japan Telegraph and Telephone East Corporation (Nippon Telegraph and Telephone East) and Japan Telegraph and Telephone West Corporation (Nippon Telegraph and Telephone West) and to ensure proper and stable provision of telecommunications services all over Japan including remote rural areas by these companies as well as to conduct research relating to the telecommunications technologies that will form the foundation for telecommunications. While Nippon Telegraph and Telephone is listed on Tokyo, Osaka, New York, and London stock exchanges, the Japanese government still owns roughly one-third of Nippon Telegraph and Telephone's shares, regulated by the Nippon Telegraph and Telephone Law.
10001+ staff
Stealth Communications
Based in New York City, Stealth Communications has been delivering lightning-fast internet connectivity to businesses, schools, and media outlets since 1995. Our commitment to staying at the forefront of technological advancements ensures that our network is equipped with the latest in both hardware and software developments. Stealth's mission is to provide the most reliable internet service at a reasonable cost, enabling New York's businesses and entrepreneurs to thrive. With a steadfast dedication to exceptional service and security, Stealth has served as a U.S. Government Contractor across various sectors for the last three decades.
5001 to 10000 staff
Bbix, Inc
Established in 2003, BBIX is an Internet Exchange company that operates globally in providing services ranging from Cloud services to Mobile services through strong research and development capabilities. As one of the leading Internet Exchange Points (IXPs) in the Asia-Pacific region, BBIX has expanded its presence into the USA and Europe. Our mission is to make meaningful contributions to the betterment of the Internet worldwide. BBIX2003Internet eXchangeIX IX OCXNaaSRPX BBIX
51 to 200 staff
Ntt Docomo, Inc
NTT DOCOMO, Japan's largest telecommunications company, provides innovative, convenient and secure mobile services that enable customers to realize smarter lives. The company serves over 73 million customers in Japan via advanced wireless networks, including a nationwide LTE network and one of the world's most progressive LTE-Advanced networks. DOCOMO is a world-leading developer of 5G networks, which it plans to deploy in the 2020s by leveraging network function virtualization (NFV) and other technologies. DOCOMO is also driving innovation in NFC infrastructure and services, emerging IoT solutions and many other mobile-related initiatives. Outside Japan, the company provides technical and operational expertise to mobile operators and other partner companies, and contributes to the global standardization of new mobile technologies. Under its +d (pronounced plus d) initiatives, DOCOMO will create new added value with business partners to enrich people's lives with all-new services and businesses. DOCOMO, whose namenotice1 implies "mobility anywhere," is based in central in Tokyo (map) and headed by President and CEO Kazuhiro Yoshizawa. The company is listed on the Tokyo (9437) and New York (DCM) stock exchanges.
5001 to 10000 staff
Sanwa Technologies, Inc
Established in 1947, SANWA Technologies Co, Ltd.(formerly Sanwa Denki Kogyo Co, Ltd.) is a renowned leading manufacturer of communication equipment servicing the global optical communications market. With over 75 years of innovation and engineering excellence, we continue our rich history of developing and manufacturing quality connectivity solutions and components to enhance the performance of optical networks of today and into the future. SANWA Technologies Group is headquartered in Tokyo, Japan, and has two manufacturing locations in Japan and Thailand, as well as the global sales operation of SANWA Technologies, Inc, with multiple offices in the USA, Europe, and APAC. Our Services Our products and solutions serve a broad range of international customers within the Telecom, Enterprise, Datacom, Premise wiring, CATV, OEM, Utility, Municipality, Security, and Aerospace/ Military markets. Create- High Quality and High Reliability A pioneer in optoelectronics design and development in Japan ISO 9001 Quality Management System and ISO14001 Environmental Management System certified Experienced and cultivated higher engineering and manufacturing skills Telcordia-based reliability verification testing for all products Customize- Engineering Excellence Develop customized products to meet customers’ requirements through integrated design, development, manufacturing, and final testing at our factories Connect- Strategically Located Offices and Diverse Personnel Global partners in seven offices around the world Experienced sales professionals with over a quarter century of industry-relevant experience Support for more than ten languages, offering hands-on support throughout the customer’s product experience
51 to 200 staff
Ntt West
Regional telecommunications services in the west areas of Japan, incidental business activities, business activities to achieve the purpose of the company, business activities to utilize the company's resources.
5001 to 10000 staff
Go Japan Co., Ltd
Go Japan Co, Ltd is headquartered in Tokyo, Japan with roughly 500 employees and agents from all over the world. It is founded by Mr. Bao Quoc Nguyen, a Vietnamese businessman who has the same type of business in Hanoi and Ho Chi Minh Vietnam (Company name: GoCallme Co,Ltd). While GoCallme Co, Ltd focuses on Global internet for travellers around the world, Go Japan’s main services are portable wi-fi and sim cards targeted to long term usage (monthly payment). Go Japan Co, Ltd (Known as Go Japan) is Japan’s leading provider of telecommunications services for foreigners in Japan. With partnership to the largest telecommunications networks, Go Japan offers a wide range of services limited to voice, mobile, internet access and international travel devices. Go Japan is privatised and was undergoing major business shift to cater for foreigner market. It has continually shifted business operations by focusing on higher-value, more profitable markets.(As of March 2019) Go Japan engaged into International events and is still on going until the present. Go Japan’s services are powered by the largest telecommunications provider in Japan, namely Softbank, Au KDDI and Docomo. Go Japan never compromise on its quality standards and is one of the most innovative in the market at present. GO JAPAN - Slogan Connect the World GO JAPAN - Mission To provide the best service and solution for foreigners in Japan GO JAPAN – Vision To be the primary choice of the telecommunication partners and subscribers.
11 to 50 staff
Emobile
Mobile communication is one of the fastest growing field with rapid technological innovations. EMOBILE’s strength is adoption of cutting-edge technology, placing our services in a competitive position in the communications market. EMOBILE introduced Japan's finest ultra high-speed service based on HSDPA. Recently we've rolled out our new DC-HSDPA+ network with downlink capabilities of up to 42M. Services will be available by year-end.
11 to 50 staff
Orbray Co., Ltd
We are a leading manufacturer of industrial jewel parts, fiber optic components, and DC coreless motors, based in Tokyo, Japan. Our unique capabilities in material cutting, grinding and polishing, are leveraged to produce high-precision Zirconia ferrules and sleeves, optical connectors, as well as specially-processed optical fibers, such as lensed and tapered fibers. These are combined with optical assembly capabilities to design and manufacture complex, high-density fiber arrays and connectors for silicon photonics coupling, as well as MEMS switch/VOA components.
201 to 500 staff
Revcomm Indonesia
Recognized collectively by Forbes, Sequoia, and Meritech Capital as one of the TOP 50 AI Companies in the World alongside brands such as AWS, ChatGPT, and Nvidia, and the only company from Asia to be recognized in the award. RevComm is a Unicorn SaaS startup headquartered in Japan with global offices in Indonesia, the USA and the Philippines. RevComm rethinks the way people communicate in business - offering cloud-based software/storage that realizes timely and precise business decision-making. RevComm offers “MiiTel", IP-phone powered by Revenue Intelligence Platform. MiiTel analyzes & visualizes sales calls and call centers to optimize sales and CS operations. Our mission is "To create a new way to communicate and spark innovation throughout the world.”
51 to 200 staff
Arteria Networks Corporation
About ARTERIA Since its founding in 1997, the company has developed a network business service leveraging its proprietary high-capacity optical fiber backbone and access lines to craft network environments suited to the corporate client needs. Additionally, it offers an internet business service delivering high-speed, stable communications via leased circuits, and a condominium internet business service, holding the largest market share in this sector in Japan through its group company, TSUNAGU NETWORK COMMUNICATIONS INC※1. Furthermore, ARTERIA provides communication services tailored for overseas markets, supporting the global connectivity needs of its customers. Building on these business foundations, we continue to create new values. Connecting New Abilities ARTERIA will excite the world with a new heartbeat, using the networks that it has built and refined in order to contribute to the realization of a sustainable world. ※1 MM Research Institute, Ltd, “Market Share Survey of All-House Condominium ISPs (As of March 31,2025)” Overseas News Releases 2025.07.17 ARTERIA Networks Participates in “AUG East”-Japan-Singapore Submarine Optical Cable Project 2025.06.25 ARTERIA Networks Participates “JAKO”, Japan-Korea Submarine Optical Cable Project 2024.07.02 ARTERIA Networks begins offering leased circuit services “DynaEther” for the Topaz submarine cable 1997 1 MMISP20253
501 to 1000 staff
Yamaha Business Solutions
Audio and video conferencing solutions from Yamaha Corporation streamline collaboration and boost productivity wherever people work. Yamaha’s renowned and rigorous approach to development and manufacturing of enterprise grade microphone systems, conference phones, and video sound bars ensures superior audio quality, reliability, and flexibility. With both wired and wireless options, Yamaha’s products enable users to have natural, clear conversations in every meeting space. More information can be found at https://usa.yamaha.com/products/unified_communications/index.html
10001+ staff
Motiv Research Co
We provide geolocation and AI powered automatic LTE/5G optimizations to the 1st tier mobile network operators. From year 2020, we launched VITOM team aiming for "Visual Intelligence To Mobility" through SLAM/Semantic SLAM.
11 to 50 staff
