Before using an IP, many users habitually like to verify once, delete invalid IPs with long delays, and retain valid IPs with short delays.

However, when using after verification, users often encounter a problem. Some dynamic IPs are verified to be valid, but invalid when used. What is the reason for this?

What are the reasons that may cause this phenomenon?

There may be many reasons why the dynamic IP verification is valid but cannot be used. The following are several possible reasons.

1. IP is blocked

Some websites will block requests for using IP. If the IP you use is blocked, you will not be able to use the service normally. In this case, you can try to use other IPs to access.

2. IP is abused

If the IP you use is abused by others, such as for network attacks or batch registration of accounts, then the IP may be blocked by the website. In this case, you can contact the service provider to solve the problem.

3. Problems with the service provider

If there is a problem with the service provider you use, such as server downtime, network failure, etc., then you will not be able to use the service normally. In this case, you can try to contact the service provider for help.

4. Need a higher level IP

Some websites have higher requirements for IP and need a higher level IP to access them normally.

If the IP level you use is not enough, you cannot use the service normally. In this case, you can try to buy a higher level IP.

5. Network connection problem

Sometimes, network connection problems may occur when using services, such as connection timeout, slow server response, etc.

In this case, you can try to check whether the network connection is normal, or try to change other services.

In short, there may be many reasons why the dynamic IP verification is valid but cannot be used. You need to carefully check the problem to find a solution. If the above methods cannot solve the problem, you can consider consulting professionals or service providers for help.

How to solve this phenomenon correctly?

It may be very frustrating to use dynamic IP verification but cannot be used, but this problem can usually be solved by the following methods:

1. Change IP

If the IP used is blocked or abused, you can try to change the IP. Some service providers provide multiple IP addresses for users to choose from. You can try to use other IP addresses to access.

2. Contact the service provider

If you cannot solve the problem, you can contact the service provider for help. The service provider may provide some debugging tools or professionals to assist in solving the problem.

3. Check the network connection

Sometimes, there will be network connection problems when using the service, such as connection timeout, slow server response, etc. You can try to check whether the network connection is normal, or try to use other network environments.

4. Use a high-level IP

Some websites have higher requirements for IP and need to use a higher-level IP to access normally. You can try to buy a higher-level IP.

5. Modify settings

Sometimes, the settings may need some modifications to work properly. You can try to modify the settings, such as changing the port, adjusting the protocol, etc.

6. Use other services

If the above methods cannot solve the problem, you can try to use other services. There are many service providers on the market, which can be compared and selected.

In short, there may be many reasons for the problem of using dynamic IP verification to verify that it is effective but cannot be used. You need to carefully check the problem and try different solutions to find a suitable solution.