SMS, HLR, PING - SMSPILOT.RU is a Chrome add-on developed by Sergey Shchuchkin. It allows users to send SMS messages through the SMSPILOT.RU platform. The add-on also provides features such as HLR requests and PING-SMS. Registration on the SMSPILOT.RU website is required to use the add-on.

With SMSPILOT.RU, users can quickly send SMS messages and access their message history. The add-on conveniently adds an SMS option to the right-click context menu on web pages. Additionally, users can make HLR requests to check if a specific phone number is still in service or not. The PING-SMS feature enables users to send hidden messages to determine if a phone is currently active or switched off.

To utilize the features of SMS, HLR, PING - SMSPILOT.RU, users need to register on the SMSPILOT.RU website.