Caller ID displayed number as 0455 430 722. Automated message in Chinese started "Ni Hao...(Hello)", I hung up after that. Google search showed number is one of two possibilities (no positive reviews) 1. Telstra Mobile phone, untraceable location or, 2. Type: Fixed-line, Number Provider: NTT East Japan, Area code: 045, City code: 543, Subscriber number: 0722, Number Region: Yokohama. Business information of this phone number is not registered.