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Home - Virtual Number Providers - 8 Best VoIP Service Providers in Japan in 2025
Reviewed by : Prasanta Raut
Are you looking to Upgrade Your Communication in Japan in 2025? VoIP service providers are the Way to Go.
Do you remember the days when physical phone lines were tied, and business calls were too expensive? Well, thanks to VoIP, those days are gone. Today’s businesses and individuals are using innovative, internet-based calling solutions rather than traditional phone systems.
But with so many VoIP Service Providers out there, how do you choose the right one?
That’s why we’ve put together this guide, to highlight the best VoIP service providers in Japan.
Table of Content
Simply put, rather than traditional phone lines, a VoIP Service Provider other internet-based services. It also allows users to make calls, send text messages, and sometimes even video calls.
To make communication faster, more flexible, and cheaper, VoIP converts your voice into digital signals that travel over the internet instead of relying on phone towers or cables.
VoIP solutions are out there for you whether you’re a small startup, an individual, or a large enterprise looking for affordable calls.
Here are the top VoIP Service Providers in Japan, let’s quickly compare them in the table:
1. NTT Communications
NTT Communications offers robust VoIP solutions perfect for enterprises and is also one of Japan’s largest telecoms, which focuses on scalability and security.
Key Features:
Pros:
Cons
Pricing:
Its pricing is based on the enterprise needs and requirements of the business., which can be customized.
Why did we go with this option?
NTT Communications is the option we can go with for its global communications solutions, cost-effective pricing, high-quality calls, and scalable services.
Ring Central is a popular cloud-based communication platform designed to help businesses stay connected. It’s also said to be an all-in-one tool for calling, video meetings, and messaging. It’s perfect for remote or hybrid teams because it runs over the Internet. It is one of the renowned VoIP services in Japan.
Cons:
Prices
Ring Central is chosen for its smarter call management powered by AI. Businesses looking for scalable communication tools can select this option. It is an all-in-one communications platform for small to large companies.
One of the leading VoIP service providers in Japan is Vonage. It is a cloud-based communications solution designed for modern businesses. Vonage helps all sizes of companies, from startups to large companies.
Vonage provides VoIP services for businesses looking for flexible, cloud-based communication with global reach, whether remote or hybrid. It also offers seamless integration.
Cloud is one of the services VoIP service providers in Japan; it is also a cloud-based phone service specially designed for Japanese businesses that focus on SIP phones and Cloud PBX services.
Cloud Nippo is best for small to medium-sized businesses, mainly operating in Japan. It is one of the most affordable, user-friendly, and easy-to-use VoIP providers.
CallHippo is among the leading VoIP providers in Japan, offering competitive prices along with modern features such as support for international numbers and integration with CRM systems. It is particularly suitable for businesses that manage high call volumes or aim to connect with a global audience. CallHippo makes an excellent option for companies looking to improve their customer interactions and streamline their sales and support processes.
CallHippo is perfect for small to medium-sized businesses, remote teams, and startups looking for an easy-to-use and affordable phone system. It’s excellent for companies with international clients, offering virtual numbers in multiple countries. With features like call forwarding, voicemail, and call analytics, it helps businesses stay connected and improve team efficiency without breaking the bank.
Microsoft Teams Phone brings together the power of VoIP and Microsoft Teams, which is already a go-to tool for many businesses. It’s perfect for companies deep in the Microsoft ecosystem. With this service, businesses can make and receive calls directly through Teams, making communication smoother and more efficient.
Microsoft Teams Phone is perfect for businesses already using Microsoft 364 or Teams. It integrates phone features directly into the Teams platform to improve communication, which makes it especially great for remote or hybrid teams that want to keep everything in one place.
Zoom is already well-known for its video conferencing capabilities. It has expanded its services to include business telephony with Zoom phones. This solution is specifically tailored for today’s hybrid and remote work environments, providing a simple and flexible cloud-based VoIP service that integrates smoothly with Zoom’s existing communication platform.
Zoom Phone is an excellent option for businesses in Japan aiming to streamline their communication within the Zoom platform. It’s easy to use, adaptable to growth, and provides reliable VoIP features without unnecessary complexity. If you’re already using Zoom, incorporating Zoom Phone could be the simplest VoIP enhancement you’ll experience.
One of Japan’s top e-commerce companies, Rakuten, provides a VoIP service for new businesses and entrepreneurs. Users of Rakuten’s VoIP services can benefit from low prices and user-friendly features to make conversation easier.
Rakuten Communications is perfect for businesses that are Japan-based or have customers in Japan. It’s an excellent choice for remote teams, small businesses, and medium-sized enterprises, as well as corporations that need a stable and easy-to-use VoIP phone system with the backing of a solid brand like Rakuten.
To make sure the VoIP service you choose is exemplary for your needs, it’s essential to take into account a number of important considerations while selecting the best VoIP service provider in Japan for 2025. The correct VoIP solution may lower expenses, increase communication, and streamline operations for any size organisation or individual. Here are some tips to help you choose wisely:
Analyze your personal or professional communication needs before exploring the many solutions available. For your small business, do you need simple phone conversations or more capabilities like cloud-based solutions, video conferencing, and team collaboration tools?
Features like voicemail, call statistics, call forwarding, and even specialized customer care may be necessary for organizations. However, basic voice and video calls may be sufficient for distant workers or small business owners. You can avoid paying for unnecessary functions by being clear about your needs up front.
VoIP services are available in different pricing plans, from pay-per-use to monthly flat rates for unlimited calling. Your best pricing plan depends on your budget and use. If you’re a startup or small business, an unlimited monthly flat rate for calling could be more economical. For larger firms or firms that don’t make many calls, pay-per-use may be the way to go.
Additionally, it’s critical to look for any hidden expenditures, such as foreign call rates, long-distance fees, or setup prices. Keep in mind that some providers charge more for extra services like video conferencing and teamwork tools, so take those into account when making your choice.
VoIP services are available at various price points, ranging from pay-per-use packages to monthly subscriptions that cover everything. Your budget and usage will determine which pricing model is best for you. A fixed monthly charge with unlimited calling might be more cost-effective if your company is new or tiny. Pay-per-use pricing can be a preferable option for larger companies or those that just sometimes need to make calls.
When choosing a VoIP service, it’s essential to see if it integrates with the tools you already use. For businesses, you’ll want a provider that connects easily with CRM systems like Salesforce, customer support platforms, and other essential tools like your email or calendar. Seamless integration with your existing software can help streamline your processes and improve overall efficiency.
Make sure the VoIP service can connect to other communication tools you use, such cloud storage or messaging apps, if you’re working alone or with a smaller team. This guarantees that your VoIP system integrates seamlessly with your current digital configuration.
It is essential to have quick customer service in case of technical issues or system outages. Customer care should ideally be available around the clock, especially if your business is open after conventional business hours. Choose providers with a reputation for excellent support, including multiple contact channels.
VoIP technology has fundamentally changed the way we communicate, and there are numerous excellent providers in Japan to meet various needs. The VoIP provider you select in 2025 will significantly impact your communication strategy, whether your company is large or small.
Make time to assess your requirements, compare prices at various levels, and determine which of the features will be most useful to your company or individual purposes. By doing so, you will be able to enjoy smooth, low-priced, and good quality communication in the future.
Some of the major providers are NTT Communications, RingCentral, Fusion Connect, Google Voice, CallHippo, Microsoft Teams Phone, and Rakuten Communications.
Yes, they offer global coverage so you can stay connected with clients or family from all over the world.
Yes, VoIP services are cheaper than traditional landline phones, especially for international calls.
Yes, VoIP is perfect for both small and large companies. Small businesses benefit from the flexibility and cost savings, while larger firms can benefit from sophisticated capabilities like CRM connections, analytics, and AI-driven call routing that assist in boosting productivity and streamlining communication.
Prasanta, founder and CEO of Dialaxy, is redefining SaaS with creativity and dedication. Focused on simplifying sales and support, he drives innovation to deliver exceptional value and shape a new era of business excellence.
Prasanta Raut