Learn how to resolve common issues when you apply for, allocate, or recover elastic IP addresses (EIPs).
"eip frequent purchase" error
Cause: Alibaba Cloud detected frequent EIP applications and changes on your account. This triggered a security alert for abnormal purchasing behavior, which temporarily restricts your permission to purchase EIPs.
Solution: Make sure the number of EIPs you apply for within the next hour does not exceed twice your account's EIP quota. Your purchase permission is restored automatically after one hour. To view your EIP quota, see Manage EIP quotas.
EIP not found in the console
This issue may occur for the following reasons:
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EIP provisioning takes 3 to 5 minutes. The EIP may not yet be available.
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The console is set to a different region than the one where the EIP was purchased.
Solution: Go to Expenses and Costs and navigate to Orders > My Orders to find the purchase record for the EIP. Check the order details to identify the region of the EIP. Then, switch to that region to view the EIP information.
EIP allocation policy
By default, EIPs are randomly allocated. However, if you frequently apply for and release EIPs, the system prioritizes allocating an EIP that you have used before.
Avoiding previously used EIPs
When an EIP is released, its IP address returns to the public IP address pool. When you apply for a new EIP, the system may reassign an IP address previously used by you or another user. This is standard IP allocation behavior.
If your business requires a previously unused IP address, use the IP address pool feature to apply for an EIP from a specific CIDR block. This feature is not enabled by default. Contact your account manager to enable it.
The following limits apply to EIPs from an IP address pool:
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Only pay-as-you-go EIPs are supported.
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The EIP and the IP address pool must be in the same region.
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Only IPv4 EIPs are supported. For other requirements, contact your account manager.
Protection period for released EIPs
You can recover EIPs that are released within the last seven days by specifying the IP address or EIP ID.
If the EIP or ECS static IP address is already assigned to another Alibaba Cloud account, or is locked or recycled due to security reasons, the EIP cannot be recovered. You cannot recover the public IP addresses of ECS instances or CLB instances that are deployed in classic networks.