Where does that nuisance call come from ?

It reminds me. I used to get calls which speak in an automated manner and guessed that it must be some telemarketers, or just a wrong number. Now, there is a way to at least search and identify such unknown calls from www.reportphonenumbers.com. This site allows Search Caller Identifier and Reverse Lookup list of telephone numbers. It also has sections for you to read submitted comments and post your own research and opinions.