I have several providers in my virtual hosting toolbox. One of my new favorites is Digital Ocean, a virtual server hosting company that uses KVM as their virtualization platform and has some great cloud-like features such as snapshotting and deployment from snapshot.
Digital Ocean is my pick for low-latency, high-throughput network and disk (SSD) I/O at a very good price. With VoIP applications, network quality is among the most important concerns. You get a public IPv4 and IPv6 address standard, so there’s no NAT to work around.
Use this link for $10 credit on Digital Ocean and add them to your own virtual hosting toolbox.