Please apply via the "Application for IP Address Restriction Target Expansion" form.
https://studist.my.site.com/forms/s/ip-expansion
※ There is no cost to use the "IP Restriction Target Expansion feature."
※ A contract plan that supports "IP Restrictions" is required.
For the plans and options that support this feature, please check here.
■Teachme Biz
What features are available for each Contract plan?
https://help.teachme.jp/hc/en-us/articles/53663694992025
How to check your Contract plan and Option
https://teachme.jp/8/manuals/9151514
If you have any questions regarding your application, please feel free to contact our support desk.