Where does the text message starting with 008211 come from?

SMS messages starting with 821 are overseas or virtual numbers.

Phone numbers in my country do not have such a beginning, so we can know that the text message was sent to the user through an overseas or virtual number.

The key to dealing with all kinds of text message scams is to be vigilant and not to easily believe messages sent by strangers. Do not easily reveal your family status and contact information to strangers, and be careful not to fall into a scam set by criminals.