1. Visit the VPN Service Website: Access the website of the VPN service you're using. Look for sections like the privacy policy or terms of service, where you might find the IP address used.

2. Search Online for VPN Providers: Use search engines to find VPN providers. Check their websites for any services listed that you might be accessing through a VPN.

3. Check Router Settings: If your router is set up with a VPN, access its settings. Use utility tools like netstat or ping to verify the IP address being used.

4. Verify Through Service Websites: Search for the VPN provider's name to find pages listing its services. Check if the IP address is available, typically on their own website.

5. Compare with Public Wi-Fi IP: Determine the public Wi-Fi IP address of the service you're accessing. If the VPN IP matches, it's likely the correct one.

6. Consider VPN Provider Policies: Be aware of privacy settings and the service's duration. Choose a VPN with strict privacy policies for your needs.

7. Ensure Privacy Compliance: Verify that the IP address you're using is appropriate for the service and not shared with others.

By following these steps, you can accurately identify the VPN IP address, ensuring it aligns with your service and privacy preferences.