I work for IPinfo. Traffic data alone is not going to be a good indicator, to be honest. Last time I checked, we recognized 100 million resproxy IP addresses, and resproxy services charge by bandwidth. No single organization can or will want to run continuous operations from a single IP address, as it will get flagged by a non-IP-based bot detection check, and churning IPs generally indicate a standard web scraping operation.

I recommend folks just check our website: https://ipinfo.io/my and if they have questions, ask me, I will try to get to the bottom of this.

What we do is connect to residential proxy IP address and verify them before putting them in our database.

But DNS and traffic monitoring is a good practice. If you see gigabytes of traffic without explanation, you have more serious concerns than resproxy.