Get a DID from from a SIP provider. Use that number to confirm a GMail account. Use any DNS retailer to buy a domain using a false name, your new GMail account,

Get a DID from from a SIP provider. Use that number to confirm a GMail account. Use any DNS retailer to buy a domain using a false name, your new GMail account, and a debit gift card. But really, then you have to host it, and manage it, and ... the DNS is really not the hardest of your problems when your adversary has "$50-100k or more" to spend on finding you.