We can't access to any tcp ports of 15.223.143.32

Please check at the following:

1. Verify Security Group Rules – Ensure inbound and outbound rules allow traffic on the required TCP ports.
2. Check Network ACLs – Confirm that your Network Access Control Lists (ACLs) aren't blocking traffic.
3. Inspect Route Table Settings – If this EIP is associated with an AWS instance, verify that the route table correctly directs traffic.
4. Review AWS Service Health – AWS occasionally experiences regional outages. You can check the AWS Service Health Dashboard for any reported issues.
5. Run Connectivity Tests – Use telnet 15.223.143.32 <port> or nc -zv 15.223.143.32 <port> to test port accessibility.
6. Check for Port Exhaustion – If the instance is running Windows, port exhaustion could be a factor.

What do you mean by you cannot access 15.223.143.32. I can easily ping this IP and it returns a response.