Their back-end systems can handle about 2 billion [[DNS]] queries a day, and maintains its name server constellation across six datacenters around the world. They forward over 11 million emails and block over 28 million spam messages every day. | Their back-end systems can handle about 2 billion [[DNS]] queries a day, and maintains its name server constellation across six datacenters around the world. They forward over 11 million emails and block over 28 million spam messages every day. |