A brief introduction to intelligent DNS resolution

When traditional DNS resolves a domain name, it does not determine the source of the user, but randomly selects one of the IP addresses or CNAMEs and returns it to the user.
Different from traditional DNS, when intelligent DNS resolves a domain name, it can first determine the user's access source, and intelligently return different resolved IP addresses or CNAMEs for different users.
For example: a website www.example.com has three computer rooms, which are deployed in different countries: one is located in China, one is located in Japan, and the other is located in the United States. When a user accesses the website www.example.com, intelligent DNS resolution can enable users in China to access computer rooms in China, users in Japan to access computer rooms in Japan, and users in the United States to access computer rooms in the United States. In this way, the time for users to visit the website can be shortened, and the pressure of a single server to cope with global users can also be reduced.

What are the benefits of using smart DNS resolution?

1. Unified domain name, easy to manage
Global users can use the same domain name to access the website, even if users in different regions need to access different content, there is no need to apply for different domain names in each region. Smart DNS scheduling allows users in different regions to access content that only belongs to their own region through the same domain name, facilitating domain name management.

2. Easily schedule lines
If you have multiple IPs with different lines, you can also change the line in a certain area by changing the way to resolve the IP. Example: If you have both telecom IP and mobile IP. When telecom lines have high latency in some areas, you can use smart DNS to replace the resolution IP in that area, and switch users who should have access to telecom IP to mobile IP.

3. Diversion and load balancing
Using smart DNS resolution, you can build multiple mirror websites or deploy website content on several different servers for offloading, reducing server pressure and improving website response speed.

4. Resist DDoS attack
By analyzing multiple lines, it can share DDoS attack traffic and reduce the impact of DDoS.

5. Personalized parsing
Define a personalized DNS resolution record for each different user. Make the IP addresses accessed between them different.

What are the functions of Grey Domain Smart DNS?

1. Supports multiple parsing methods
Gray domain smart DNS supports a variety of resolution methods, including: pan resolution, intelligent resolution, alias resolution, proportional resolution, and search engine resolution.

2. Domain name resolution is refined to all provinces in China
The domain name resolution line is refined and updated in real time, and the optimal node line is allocated in real time according to the dynamic traffic of users. Domestic routes can be divided into cities and provincial operators, and overseas can be divided into countries and autonomous prefectures. Support custom lines.

3. Anti-DDoS Pro DNS Server
The self-developed high-performance DNS server program provides stable resolution services.
The protection system is fully covered, and the parsing node has super attack defense capability. Resists over 100 million QPS and T-level DDoS attacks.

4. Batch operation, second-level deployment
The operation is simple, and the deployment takes effect in seconds. Support batch operations to improve the efficiency of domain name management.
The rich API can be seamlessly integrated with customer business, making DNS configuration more flexible.

5. Free SSL Certificate
Free SSL certificate and download available.

6. Domain name jump function
Supports 301/302 jumps and implicit jumps.

7. Professional technical support
Many years of operation and maintenance experience team, 7 × 24 hours of manual technical support, real-time monitoring, to ensure stable DNS service and quick response to feedback.

DNS-related proper nouns explained

1. What is an A record?
A record refers to the IP address record, which is used to specify the IP address record corresponding to the host name/domain name. Through the A record, different domain names can be set to point to different IPs.

2. What is a CNAME record?
CNAME record refers to a record that resolves a domain name to another domain name.

3. What are NS records?
Domain name server record, when the domain name needs to be handed over to other DNS service providers to resolve the records that need to be added.

4. What is an AAAA record?
AAAA record refers to the IPv6 address record (eg: 2001:4860:4860::8888). If the domain name points to an IPv6 address, an AAAA record needs to be added.

5. What is TTL?
TTL is the abbreviation of Time-To-Live in English, which means the retention time of a domain name resolution record in the DNS server.