There are a lot of applications and sites to find out who is calling you or to know which code area belongs to a certain state or country. When I traveled I also had a lot of troubles with the mobile number codes of various countries. I couldn't find the correct and necessary code of the country I wanted to call, so I searched for programs and sites on the internet. I found a site https://www.livesupportrhino.com/5xx-area-code and I'm still using it to know who calls me, to know the number code, location, and even name of the person who called me or whom I want to call.