Creates a new Domain and returns its instance resource. You must pick a unique domain name that ends in .sip.twilio.com.nAfter creating a Domain, you must map it to an authentication method before the domain is ready to receive traffic.n
Delete a domain. If you have created subdomains of a domain, you will not be able to delete the domain until you first delete all subdomains of it.
Return the IpAccessControlListMappings that are associated to this domain.