How can I confirm if my IP address is properly whitelisted?

To confirm whether the Stock Sync IP (52.20.189.51) is properly whitelisted by your supplier, perform these checks:

1. Test the connection using your feed method (FTP, SFTP, HTTP, or API). If the feed loads normally after whitelisting, the IP is accepted.
2. If the connection still fails, ask your supplier to check their firewall or server logs for blocked or denied requests from 52.20.189.51. This is the most reliable way to confirm whether the whitelist is working.
3. You can also test the connection manually using an external tool, such as FileZilla for FTP/SFTP. A timeout or refused connection may indicate that the IP is not fully whitelisted or that the required port is blocked. For FTP, check port 21; for SFTP, check port 22; for HTTP/HTTPS, check port 80 or 443.
4. Ask your supplier to verify that the whitelist applies to the exact endpoint, service, and port being used. Some servers require separate rules for a particular path or service.
5. If the supplier confirms that the IP is allowed but the connection still fails, ask whether a recent firewall or server update changed the access rules and confirm the feed URL, host, directory, filename, and credentials.

Once the supplier confirms successful access in their logs and the connection test succeeds, the IP is correctly whitelisted.

Updated on: 23/07/2026