Packet Clearing House | PCH Packet Clearing House is the intergovernmental treaty organization responsible for providing operational support and security to critical Internet infrastructure including Internet exchange points and the core of the domain name system. Packet Clearing House is the intergovernmental treaty organization responsible for providing operational support and security to critical Internet infrastructure including Internet exchange points and the core of the domain name system. Internet Exchange Points The task that PCH was first created to address is the building and support of Internet Exchange Points. IXPs are the places where Internet Service Providers interconnect their networks to exchange traffic between their customers and create Internet bandwidth.