Excuse me, is this SMS number safe?

According to the information you provided, I can't confirm whether this number is a QQ device lock or something else. However, texting strange numbers is risky, especially without confirmation. Sending short messages to strange numbers may lead to personal information disclosure, fraud or other security problems. In order to protect the content and personal privacy of mobile phones and bank cards, we should avoid sending any sensitive information to strange numbers.

If you have any questions or concerns, it is recommended to consult network security experts or seek help from relevant platforms. They can provide more specific suggestions to ensure the security of your personal information and equipment. Please keep in mind the importance of protecting personal privacy and security on the Internet, and take appropriate measures to protect yourself and your equipment.