I have a domain and I use a hosted email I use a catchall email address to create an address on the fly for webshops and such. If they get conprimised or spam me I can block that email.
Is there awauy to have something like this for the new Identifier on the web: the phone number
Probably more trouble than you’re looking for, but I run an Asterisk VOIP server. I keep a couple long term numbers and sometimes cycle through disposable numbers.