Organization Structure & Staff

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ARIN is structured to operate as a service organization that is responsive to the needs of the public it serves. It is organized and driven by the users in the community and is thus able to keep in step with their requirements.

ARIN Community and Membership

Anyone with an interest in Internet number resource management in the ARIN region can be part of the ARIN community. In addition, the ARIN community specifically includes:

You do not need to be an ARIN Member to apply for resources from ARIN or to participate in ARIN’s Policy Development Process. However, to become a member, you must first hold Internet number resources from ARIN. For a complete explanation of membership, visit the Membership page.

Board of Trustees

The Board of Trustees, elected by the ARIN membership, establishes and maintains authority over ARIN’s scope, mission, and strategic and fiscal direction. The Board also oversees committee nominations, appointments, elections, and votes on community-developed draft policies in accordance with the Policy Development Process. For the current members of the Board, links to meeting minutes, and other information, visit the Board of Trustees page.

Advisory Council

Elected by the ARIN membership, the Advisory Council (AC) advises the Board of Trustees on Internet number resource policy and related matters and forwards Recommended Draft Policies to the Board for ratification, in adherence with the Policy Development Process. Additional information can be found on the Advisory Council page.

President & CEO

John Curran

Click here to read John Curran’s bio

The Board of Trustees selects the President and directly determines compensation. The President:

  • Acts as Chief Executive Officer
  • Appoints and supervises all ARIN operational staff
  • Serves on the Board of Trustees
  • Acts in an advisory capacity to all other officers and trustees
  • Serves as an ex-officio member of the Advisory Council
  • Acts as a liaison between the Board of Trustees and the Advisory Council

Senior Leadership

Chief Experience Officer

John Sweeting

The Chief Experience Officer at ARIN is responsible for crafting and executing a comprehensive strategy to elevate the organization’s engagement and satisfaction across all customer touchpoints. This executive role encompasses a wide array of responsibilities, from driving customer excellence and managing key industry and customer relationships to being accountable for outreach, compliance, and fraud prevention initiatives. The Chief Experience Officer ensures alignment with best practices in design and user experience to enhance the overall operability, reliability, and integrity of ARIN’s services. This role is accountable for process improvement and requirements definition, leading to tangible enhancements in service delivery and customer satisfaction. By leveraging these practices, the Chief Experience Officer supports the organization’s mission to maintain an accurate and dependable Internet number resource registry, benefiting customers, stakeholders, and the broader Internet community.

Chief Financial Officer

Brian Kirk

The Chief Financial Officer is responsible for the integrity and reliability of all ARIN financial operations. This includes the leadership and coordination of the planning, accounting, auditing, and budgeting efforts for ARIN. In addition, the Chief Financial Officer monitors and reports on the overall fiduciary condition of the company and is accountable for ensuring timely financial statements and budgets for senior management, the Board of Trustees, and the membership.

Chief Human Resources Officer

Erin Alligood

The Chief Human Resources Officer is responsible for providing leadership in developing and executing human resources strategy in support of the overall business plan and strategic direction of the organization, specifically in the areas of succession planning, talent management, change management, organizational and performance management, training and development, and compensation. The Chief Human Resources Officer provides overall direction for all activities related to administration, personnel, facility management, internal company policies, and security. This role also ensures that ARIN’s employee practices are in compliance with the law and meet the highest possible standards.

Chief Operating Officer

Richard Jimmerson

The Chief Operating Officer oversees and maintains the day-to-day internal operations of ARIN and facilitates coordination between all departments, working closely with each department director. Additionally, the Chief Operating Officer coordinates and oversees interdepartmental projects, is responsible for execution of ARIN’s internal program management, is primary liaison to ARIN legal counsel, and serves as chief of staff.

Chief Information Security Officer

Christian Johnson

The Chief Information Security Officer provides the overall definition, guidance, and direction of information security strategies to support ARIN’s corporate objectives and protect the company’s assets. This role partners closely with the Chief Technology Officer and other executive staff to develop the overall information security program approach in a rapidly-changing environment.

Chief Technology Officer

Mark Kosters

The Chief Technology Officer is responsible for the overall planning, budgeting, organizing, and execution of all Engineering functions at ARIN. This role directs the design, development and maintenance of systems, programs and systems software to meet community and company user needs. The Chief Technology Officer is responsible for driving the technical direction of projects supporting the ARIN community.

General Counsel

Michael Abejuela

ARIN’s General Counsel oversees and monitors legal issues that may arise and works with other members of the ARIN executive team on such issues. Additionally, the General Counsel interacts with community members and coordinates with various departments within ARIN on responses to requests from members of the ARIN community as needed. The General Counsel oversees the ARIN in-house Legal and Government Affairs Departments and manages outside counsel.

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