This caller phones very early in the mornings that it wakes me up around 4,5 or 6 o'clock

Again, i am getting this phone number. I have done quite a bit of research on this number. It is fraudsters and imposters, one  and the same person with different profiles it uses your phone illegally to connect to computer modems. it shows host mater@yahoo.inc.com also nested@verisign-grs.com. It uses ip address 98.138.112.33  which is a DNS server which is a way for sex offenders/predtors and other criminals to hide behind the computer like tourists, it shuffles your ip address around many places so it can go unfound. This ip address show sunnyville, california and then send it to mta.v5.mail.vip.ne1.yahoo.com as well as many other address that are very similar. Yahoo should not allow such  thing because getting the phone call can change your dns server in your network settings under advanced without you knowledge and can send  ilegal stuff to your computer without your knowledge.BE VERY AWARE