Non-voip gatekeepers are more common. Have you found ways around this?

A recent example from my attempt to register at chatgpt:

https://imgur.com/a/IAUbyhu

I understand voip based numbers are notorius for abuse, but I think this gives entities an excuse to harvest numbers that are tied to active mobile accounts. Upmasked has long been dead, and things like callcentric, gvoice, etc. aren't working for me any longer. What have you found to be a good option to avoid dissemination of your private mobile number?

non privacy voip