FAQs about the Service Specifications(IIJ DNS Platform Service) Q. What kind of service is the DNS Platform Service? Q. What is the difference between the premium plan and basic plan? Q. Do you have any cache DNS functions? Q. Can I register domains? Q. What is QPS? Q. How do you count QPS? Q. What will happen if QPS exceeds the limit in the plan? Q. Do you have any ways to check the number of queries in my own domain? Q. What is SLA? Q. Is IPv6 supported?