Tencent Cloud offers different types of IPs for internet access and private network access. These IPs will not change unless you unbind or change them.
A public IP address is an IP address in the Internet that is not reserved. A CVM with a public IP address can access other computers in the Internet and can also be accessed by other computers.
Tencent Cloud offers public IPs and elastic IPs for internet access.
|Item||Public IP Address||Elastic IP Address|
|Mutual access to Internet||Both supports mutual access internet.|
|How to Obtain||It can only be obtained when you purchase a CVM.|
|Features||It’s lifecycle is bound with the CVM, and will be released upon the release of the bound CVM.|
|Fees||Free of charge|
|Quota||It is subject to the quota of CVMs.||Each account can apply for 20 EIPs in each region.|
|For the quota of the public IP addresses for a single CVM, see Quota Details.|
|Operations||Converting an IP||A public IP can be converted to an EIP. For details, refer to Converting a public IP to an EIP.
When a public IP is converted to a elastic public IP, the IP address will not change.
|An EIP cannot be converted into a public IP.|
|Replacing an IP||Public IPs can be directly replaced. For details, refer to Replacing public IP addresses.||EIPs cannot be directly replaced. You need to unbind and release the EIP, apply for a new one and bind it again.|
|Releasing an IP||If you no longer need a certain public IP, you can return it in the CVM console by selecting **Operation** > **More** > **IP/ENI** > **Return public IP**.||Release it in the EIP console. For details, refer to Releasing EIPs.|
|Recovering an IP||You can recover public IPs/EIPs that you have used if they are not used by other users. For details, refer to Recovering Public IPs.|
A private IP address is used to implement Tencent Cloud private network services. It cannot be accessed from internet. Each CVM instance has a default network interface assigned with a private IP (i.e. eth0). The private IP address can be automatically assigned by the system. In a VPC environment, the private IP address can also be customized by the user.
The private IP can be used for the communication between CLBs and CVM instances, and between CVM instances and other Tencent Cloud services (such as TencentDB).