There are a few indications that can suggest if you may have been blocked from texting someone. First, your messages may not be delivering, and you may not see when the person was last active on their messaging app. Additionally, if you previously had conversations with the person, those conversations may suddenly disappear from your chat history. Finally, if you consistently see only one grey tick beside your messages, it may mean that your messages are not being delivered to the recipient. However, keep in mind that there could be other reasons why you are not receiving a response, such as the recipient being busy or their phone being turned off, so it's not always a guarantee that you have been blocked.