All proxy products of the platform need to be used in an overseas network environment, which requires customers to configure themselves.
1. Check Local Network Status
- Confirm the device is connected to the internet (browser can open webpages normally)
- If using a server or remote environment, ensure the network egress is not restricted
2. Check Proxy Address and Port
- Ensure the
Proxy IP and Port being used match the package information
- Incorrect proxy address format, closed ports, or extra characters entered will directly cause connection failure
3. Check Username and Password (if current proxy requires authentication)
- Static Residential IPs and Unlimited Residential IPs use username/password sub-accounts for proxy connection authentication
- Authentication accounts can be viewed or regenerated in the platform
- When copying account credentials, it is recommended to paste them directly to avoid omissions or extra spaces from manual entry
4. Check Proxy Protocol Match
Currently, Ip2up residential proxies support:
When using curl or proxy managers, ensure the protocol mode matches the product support. An incorrect protocol mode will prevent handshake connection.
5. Check Firewall or Port Restrictions (Server/Cloud Host Environment)
- Servers may block proxy port access by default, requiring manual allowance or port status checking
- It is recommended to use
telnet or nc for port connectivity testing:
telnet PROXY_IP PROXY_PORT
# or
nc -zv PROXY_IP PROXY_PORT
6. Switch Network Environment for Testing
If the above checks are correct, it is recommended to try:
- Switching to a 4G/5G network
- Changing to another Wi-Fi network
- Restarting the proxy client or terminal
You can try the following methods to verify if the proxy can connect:
- Proxy managers (Shadowrocket / v2rayNG / Clash / v2rayN, etc.)
- CURL proxy requests
- Browser extensions or local client configurations
If the issue persists, please provide the following information to customer support, and we will assist in troubleshooting:
- Screenshot of the connection failure prompt (if any)
- Proxy package type (Static/Dynamic/Unlimited)
- Proxy IP and Port
- Sub-account used for connection (if applicable)
- Device or server system type (Mac/Windows/CentOS/Ubuntu/Android/iOS)
9. Summary of Possible Common Causes
| Possible Cause | Result |
|---|
| Network disconnected or egress restricted | Unable to access the proxy server |
| Incorrect proxy address/port | Direct connection failure |
| Incorrect username/password sub-account or copy error | Authentication failure |
| Protocol mode mismatch | Handshake connection failed |
| Server port not allowed | Blocked or no response |
10. Disclaimer
Ip2up only provides residential proxy egress and authentication connection services and does not participate in the execution logic of user-accessed content. Please ensure proxy usage is legal and compliant, and adhere to third-party platform rules.