Reviews and expert opinion Coreserver

Mark Holden
Mark Holden
Web Hosting Expert

GMO DigiRock, Inc. – the parent company of Coreserver was established in 2001. Coreserver offers rental servers and domain services to its Japanese customers. Its domain services are offered through Value Domain, which is managed by its parent company.




Coreserver is part of Osaka-based GMO DigiRock, Inc. that started its journey in 2001. You can get rental servers and domain services (including domain registration, transfer, bulk buying, etc.) from Coreserver. However, the domain services are offered through Value Domain, which is part of Coreserver’s parent company. Coreserver’s website supports Japanese.

Features and Ease of Use


Coreserver offers 4 rental server plans that come with

  • 50-unlimited multi domains
  • 60GB SSD-500GB SSD disk space
  • Unlimited bandwidth
  • 200-unlimited email accounts
  • Free SSL
  • Automatic backups

The use of SSDs delivers improved performance for your website while giving you a stable server environment. If you’ve got large sites or those that run multiple systems concurrently, your chosen hosting provider’s web server should have adequate CPU and memory. Else, your site may not be displayed when the number of accesses on such a server increases. You don’t need to worry about these things because Coreserver is capable of running a maximum of 28 cores stably even when there’s a heavy load and comes equipped with a maximum of 384GB of memory, which has been set in such a way that it can make unique adjustments to ensure your page display and processing speed aren’t adversely affected when the load on the server increases.

Coreserver’s control panel lets you easily install WordPress via automatic installation. The company also offers HTTP/2 support that speeds up your web page display, thus giving your visitors a faster and better browsing experience.

Pricing and Support

Rental server plans of Coreserver start cheap and then go on to being competitively priced. To pay for these plans in Japanese Yen, you can use bank transfer, credit card, WebMoney, and convenience stores. Available billing periods are monthly, quarterly, semi-annual, and annual. The longer your billing period is, the greater would be your price discount.

You can test the company’s plans with a thirty-day free trial period.

You can reach Coreserver’s customer support through live chat, which is available only in Japanese on weekdays from 10 am-5 pm. Registered users can also use an inquiry form and phone to seek support. However, phone support (with reservation in advance) is available only for customers of CORE-B and CORE-C plans. I got quick answers to my questions on Coreserver’s live chat though I had to get some help from Google Translate.


If you need self-help, you can check the company’s FAQ section and manuals (including video manuals). There’s a user forum, which though closed now, lets you access the posts. Thus, it could be of some help too. You may even check Coreserver’s notice as well as maintenance page to get information about scheduled maintenance, updates, etc.


User reviews

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How does Coreserver match up to the competition?

Hostinger Compare 4.9 Compare
InterServer Compare 4.8 Compare
Coreserver Compare 4.2 Compare
Bluehost Compare 2.5 Compare

Bottom line on Coreserver

For robust Japanese rental servers, you can take a look at Coreserver’s plans. With a thirty-day free trial period, giving its plans a try and getting out, if they don’t suit you, is easy.


  • 19 years of industry experience
  • Competitive pricing
  • 30-day free trial period
  • Quick live chat support


  • Plans available only for Japan-based clients
  • Plans payable in only in Japanese Yen

Get Japanese rental servers from Coreserver.

Mark Holden
Mark Holden
Mark is a full stack web developer specializing in HTML5, CSS, JavaScript, MySQL, and PHP. When he's not busy building websites or geeking out over the latest addition to his ever-growing gadget collection, he enjoys playing drums for his progressive rock band. He can also make a mean Spanish omelet.

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