03plus Expansion
2026-04-13 03:37:42

Expansion of 03plus Cloud PBX Service to Mito Area: A New Era of Mobile Communications

Cloud PBX Service 03plus Launches in Mito Area



Granton Inc., headquartered in Shibuya, Tokyo, is excited to announce the expansion of its cloud PBX service, 03plus, to the Mito area (area code: 029) starting from April 13, 2026. This service will enable residents and businesses in Mito City, Hitachinaka City, and Nakaminato City, among others in Ibaraki Prefecture, to utilize fixed-line phone numbers through their smartphones.

Background of the Service Launch



03plus has previously operated predominantly in major urban centers like Tokyo, Osaka, and Nagoya. The company has received numerous requests from freelancers, sole proprietors, and small businesses expressing the desire to have a business phone line with their local area code. In light of Mito's growing reputation as a business hub within Ibaraki Prefecture, Granton is proud to address this demand by offering its service in the 029 area. For local businesses, adopting a fixed-line number with a familiar area code significantly enhances trust and credibility among customers.

With the flexibility to manage communications from a smartphone, users can send and receive calls without being tied to a physical office, fostering a modern working environment.

Available Areas for the 029 Code



  • - Area Code: 029
  • - Target Region:
- Nakaminato City
- Hitachinaka City
- Mito City
- Nakagawa District
- Higashiibaraki District (including limited regions of Ibaraki Town, Oarai Town, and Shirosato Town, excluding specific locations).

Note: Please be aware that service availability is limited to specified areas, and numbers outside this range cannot be used. Detailed area information can be checked on the 03plus website.

Service Overview



  • - Service Name: 03plus
  • - Launch Date: April 13, 2026 (Monday)
  • - Coverage Area: Nakaminato City, Hitachinaka City, Mito City, Nakagawa District, and selected parts of Higashiibaraki District (including parts of Shirosato Town)
  • - Official Website: 03plus

Features of 03plus



03plus is designed to support flexible working styles that are not constrained by time or location. With this cloud PBX, users can access a fixed-line phone number via their smartphones, streamlining business communications away from the office. Moreover, the recent addition of the 'softphone' feature allows users to manage the same company number from both their smartphones and PCs. This enhances efficiency and consistency in operations, regardless of whether they are working from home, the office, or on the go.

Key Features of 03plus:


1. Easy Setup: 03plus requires no lengthy contracts or installations. Users can create an account online and install the app, securing an area code like 03 in as little as 10 minutes.
2. Cost Savings: Starting at just 1,280 yen per month, 03plus is a more affordable option compared to traditional fixed-line services.
3. Rich Functionality: The service offers various optional features, enabling multiple users to share a single phone number, as well as capabilities for sending and receiving faxes regardless of location, thereby optimizing business operations.

Explore all the functionalities by visiting the official 03plus website.

About Granton Inc.


  • - Company Name: Granton Inc.
  • - Website: www.granton.co.jp
  • - Address: 7F Takaha Building, 6-18-5 Jingumae, Shibuya, Tokyo, 150-0001
  • - CEO: Katsuo Imoto
  • - Founded: July 1999
  • - Capital: 10 million yen

Contact Information for 03plus


  • - 03plus Support Center
- Email: [email protected]
- Phone: 03-5778-0373

Disclaimer: All company names, product names, service names, and website names mentioned are trademarks or registered trademarks of their respective companies.


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Topics Telecommunications)

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