In the US server group, the allocation of IP addresses is usually managed by the server provider. Generally, server providers assign each server a primary IP address that is used to route traffic to that server.

For site group servers, it is usually necessary to assign an independent IP address to each site. These IP addresses can be assigned in one of the following ways:

Static IP address assignment

This is the most common way of assigning IP addresses. The server provider will assign each site a unique static IP address, which will always remain the same. This allocation method is the best choice for sites that need to ensure site stability and security.

Dynamic IP address allocation

This method is usually used on smaller sites. The server provider assigns the site a dynamic IP address, which means that the IP address may change over time. This distribution method is generally not suitable for sites that require stability and security.

shared IP address

This way multiple sites share the same IP address. This approach is usually only suitable for smaller sites and may cause some security issues. Therefore, if you need to ensure the stability and security of the site, it is recommended to use the static IP address allocation method.

In conclusion, how IP addresses are assigned depends on your needs and the policies of your server provider. When choosing a server provider, it is recommended to carefully understand its IP address allocation policy and choose an allocation method that suits your needs.

Static IP address allocation is the preferred allocation method in the server group for the following reasons:

● Stability: The static IP address allocation method can ensure that each site has an independent IP address, which means that no other site will use the same IP address. This prevents your site from being down or having access problems due to problems with other sites.

●Security: Static IP address allocation can help improve the security of the site. By assigning each site an independent IP address, you can reduce the risk of your site being hacked, because it is not easy for hackers to find your site's IP address.

● SEO: Static IP address assignment can help improve a site's search engine optimization (SEO) performance. Search engines generally believe that sites with independent IP addresses are more reliable and stable, which helps to improve the site's ranking in search results.

●Convenience: Static IP address allocation can also facilitate site management. Each site has an independent IP address, which means that you can manage and maintain the site more easily.

In short, static IP address allocation is the preferred allocation method in the server group, because it can improve the stability, security, SEO performance and convenience of the site.