This topic provides answers to some commonly asked questions about requesting, allocating, and retrieving elastic IP addresses (EIPs).

Why does the system prompt "eip frequent purchase" when I apply for an EIP?

Cause: Alibaba Cloud has noticed that you have been frequently applying for and changing EIPs recently, which triggers security alerts. Therefore, the system temporarily restricts your purchase of EIPs.

Solution: Make sure that the number of EIPs that you apply for in the next seven days does not exceed the quota. This way, the restriction will be automatically removed after seven days. For more information about how to view the quota of your Alibaba Cloud account, see Quota management.

Why am I unable to access an EIP?

Possible causes:
  • The EIP is not associated with a cloud resource.
  • A security policy is configured for the Elastic Compute Service (ECS) instance. For example, if the ECS instance is added to a security group that denies access to port 80, you cannot access port 80 of the EIP.
  • The EIP has an overdue payment.

How are newly created EIPs assigned?

By default, newly created EIPs are assigned at random. However, if you apply for and release EIPs frequently, you may be re-assigned with the released EIPs instead of new ones.

Can I immediately retrieve an EIP after I release it?

After you release an EIP, you can retrieve it until the beginning of the next hour by specifying a custom IP address. For example, if you release an EIP at 05:05 on December 27, you can retrieve the EIP by specifying a custom IP address until 06:00 of December 27.