They will not be notified, but obviously they will not be able to pull you up in the search engine. It could mean to them that you either blocked them or closed your account. They won't know.
Hello. For text messaging here's what you and the blocked number will receive.
For Calls, here's the information that will be heard.
Hope this helps,
Social Care ~ Sprint.com Communities
Available ~ Friday, Saturday, Sunday
I don't want is person to know I blocked them. Do they receive any messages that say that with either text or calls?