免费的二级DNS服务

Benefits from using Secondary DNS service

Some of the main benefits of setting a Secondary DNS include:

100% Uptime: If the Primary DNS provider becomes unavailable, the DNS traffic will automatically be served by the secondary provider without any visible effects to the visitors of the web site.
Backup DNS: The Secondary DNS can be used as backup plan, if something happens with the primary provider. You will have a fresh copy of all your DNS records.
Provider independency: Last few years the DDoS attacks are growing in both frequency and severity. Adding additional DNS provider with Secondary DNS gives you better security and provider independency.
Additional security: If you manage own DNS servers, you can secure them with Secondary DNS configuration with hidden Master. ClouDNS will handle all the public traffic for you.
Easy migration from self hosted DNS to Managed Anycast DNS: If you manage your own DNS servers, adding Secondary DNS is a fairly easy process. You can migrate to DDoS Protected and Anycast DNS transparently without any other changes of your management system, access and control panels.

Additional benefits of using ClouDNS’s Secondary DNS:

基于云的基础架构: ClouDNS is designed to operate as cloud-based infrastructure service. Our self-developed system for synchronization and data distribution allows you to monitor in real time the DNS zones status at each location. With our service, you can add extra DNS resources instantly at any time.
DDoS防御: In light of the recent rise of DDoS attacks, it has become increasingly important for companies to have active protection. Our self-developed protection for DNS-based attacks is designed to mitigate any type of DDoS attacks over multiple DDoS Protection facilities. Our experts have broad experience in the new DDoS Mitigation technologies combined with long years partnership with the leading DDoS Mitigation companies.
Anycast DNS: Fastest possible DNS responses to the end users and resolvers. Real hardware, route monitoring and full dual stack network (IPv4 and IPv6) available at each POP.
正常运行时间保证: ClouDNS is the first DNS provider to guarantee 10,000% uptime Service Legal Agreement (SLA). For every minute of downtime we will extend your account with hundred.
保证最低的价格: We guarantee the lowest prices in the industry. If you find a lower price for Secondary DNS service, we will instantly amend your agreement with the exact same price.
24/7 客户支持: 无论哪一天，无论何时，我们都能提供连续不间断的网络监控和支持。

Consider these top advantages and start using Secondary DNS. Also remember that there are plenty of tutorials on our website on how to set up this process.