WhatsApp send a "blocked" notification to users when someone restricts them . To protect user privacy, the platform ensures the blocking process remains ambiguous, meaning you will never receive an alert, message, or explicit confirmation that a contact has blocked you. Instead, you must look for several indirect indicators that, when combined, suggest your account has been blocked. Key Indicators of Being Blocked
When you block someone on WhatsApp, their messages, calls, and updates won't be delivered to your phone. You also won't receive notifications from them. whatsapp blocked notification