DNS List Checking system

	The FPSN.NET Development DNS List Checking system is designed to allow system administrators to spot and stop sources of internet abuse. Enter the IPv4 (i.e. - 0.0.0.0), IPv6 (i.e. - 3ffe:b80:138c:1::59), or Fully Qualified Domain Name (i.e. - www.fpsn.net) for testing. (The test could take up to 8 seconds, so be patient.)