Unfortunately it's paywalled, but... International in which way? The actual connection from the voip system to the POTS must be inside the country I thought. And if it's not, there has to be some telco-operated gateway to whichever country it's in. Sure the end person using it is in another country connecting via internet, but there must be some local entity to go after.
If it is local, they probably can. But VoIP being international is the problem. See Why in the year of our lord 2022 am I still getting robocalls??? - https://www.vox.com/recode/22882647/robocalls-robotexts-scam... ...
Unfortunately it's paywalled, but... International in which way? The actual connection from the voip system to the POTS must be inside the country I thought. And if it's not, there has to be some telco-operated gateway to whichever country it's in. Sure the end person using it is in another country connecting via internet, but there must be some local entity to go after.