Packet Clearing House

is the international 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. PCH assists in the construction of IXPs, and provides equipment, training, and ongoing support to IXPs and their operators. Over the past twenty years, PCH has helped build more than 150 IXPs, and has provided assistance of some sort to more than half of all the world’s IXPs. PCH also maintains the global directory of IXPs, and publishes statistics about their use and growth.
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Core of the Domain Name System

PCH has been working since 1995 to make the Domain Name System faster, more scalable, and more resilient against attack. PCH pioneered the use of DNS anycast to distribute DNS load among more servers in more places, anycasting top-level domain nameservers since 1997, and root nameservers since 2001. PCH is the largest authoritative DNS service network in the world, hosting multiple root letters and more than three hundred top-level domains on thousands of servers in 150 locations around the world. PCH is also the operator of the only FIPS 140-2 Level 4 DNSSEC signing platform other than the root itself.
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Regulatory & Policy

PCH conducts more than 100 workshops each year on Internet regulatory theory, governance, and economics for audiences ranging from Internet service provider engineers to communications, economic development, and defense ministers. PCH also works in conjunction with and in support of other Internet governance organizations and fora like the global network operators groups, the Internet Governance Forum, the OECD, ICANN, NetMundial, the Regional Internet Registries, and many others. PCH also maintains a global calendar of Internet operations and governance meetings.
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Cybersecurity Coordination

PCH is the secretariat and operator of the INOC-DBA critical infrastructure protection hotline communications system, which ties together more than two thousand network operations centers and CERTs in a resilient communications mesh that lets network operators mitigate cybersecurity threats and online crime. PCH also operates a CERT of global scope, and provides training, resources, and assistance to CERTs and governments and communities that wish to form new CERTs. PCH also provides training and resources for national cyber-defense and critical Internet infrastructure protection.
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