Blocking a number doesn’t directly notify the caller that your number is active or that you’ve blocked them. When you block a number, calls are typically redirected to voicemail or disconnected with a generic message like “The number is not in service” or “This call cannot be completed.” Texts are silently discarded. Most callers won’t know your number is live, as they receive no explicit confirmation of the block.
However, savvy or persistent callers (e.g., spammers) might suspect your number is active if they reach a voicemail or hear a carrier-specific message instead of a clear “disconnected” prompt. This isn’t definitive proof, though, as inactive numbers can behave similarly.
TIPS TO MINIMIZE CLUES
Use a generic or no voicemail greeting to avoid confirming your identity. Check if your carrier allows a “disconnected” message for blocked calls.
Avoid answering or engaging with unknown numbers, as any interaction could suggest your number is active.
Consider 3rd-party apps (e.g., Truecaller) for more neutral call handling.
CONCLUSION. Blocking a number doesn’t clearly signal your number is live, but subtle cues might hint at it to persistent callers. If you’re dealing with specific spam or want me to check X for related issues, let me know!
