Find out the ip address of the Onebox server

A short simple way to determine ip: enter the site domain in https://2ip.ua/ru/services/information-service/whois or similar services. Or ask the host. But there are a lot of assumptions at the same time, which do not guarantee a 100% result.

yes, that's right, sometimes the ip is completely different
For chrome and firefox browsers, there is an ipvfoo extension that shows the IP of the current site online https://prnt.sc/uh5d6v
Very comfortably

Hello, ip for incoming and outgoing traffic can be different. Those. you can access your site using ip 205.12.23.220, and requests from the server to third-party resources can go from ip 205.12.23.105, for example. To find out exactly from which ip you are knocking to third-party resources, I go to the server and write the command to the console:
curl ifconfig.me
In 90% of cases, it will give you the same ip as whois and so on. But in this case, you will definitely be sure that you are knocking from the ip that the command gave you (curl essentially makes a request to a third-party site, and the site, in turn, answers from which ip you made a request to it)

I also need Box IP, I need it for Binotel. This is your server, do I still determine this way or do I still contact support?

try:
For chrome and firefox browsers, there is an ipvfoo extension that shows the IP of the current site online https://prnt.sc/uh5d6v
Or through the terminal enter the command: ping domain
If it doesn’t work out, then figure it out, start with the simplest