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Advisory Council


The Advisory Council serves in an advisory capacity to the Board of Trustees on Internet number resource policy and related matters. Adhering to the procedures in the Policy Development Process, the Advisory Council forwards consensus-based policy proposals to the Board for ratification.

The Advisory Council consists of 15 elected members. The President of ARIN is an ex-officio member and acts as the liaison between the Board of Trustees and the Advisory Council. Read the Election Guidelines for more information on how Council members are nominated and elected.

Current Members of the Advisory Council

Please Note: 23 August 2016: Kevin Blumberg resigned in order to accept an appointment to the NRO Number Council. Kevin's open seat will be filled in the October 2016 ARIN elections.


Dan Alexander daniel underscore alexander at cable dot comcast dot com

Dan Alexander is currently a Network Engineer for Comcast Cable. He is responsible for the planning and management of Internet number resources on the cable network. Prior to joining Comcast, he served a similar role with Excite@Home after obtaining a Bachelor of Science degree from Southern Illinois University. Dan was elected to the AC in October of 2005 and re-elected in 2008, 2011, 2014 (for a one-year term), and 2015. His current term expires 31 December 2018.

Cathy Aronson cja at daydream dot net

Cathy Aronson has been an active ARIN participant since 1998. Cathy was also on the original ASO Address Council.  Cathy acts as an advocate for address policy by volunteering to do many presentations to get involvement of other communities such as NANOG.  She feels that cross pollination of ARIN with other RIRs as well as ARIN with other networking groups is essential to making good address policy. Cathy was most recently a network engineer at Cascadeo Corporation where she helped manage addressing and routing for a number of clients. 

Previously, Cathy was a member of the technical staff at Packet Design, where she was responsible for operational aspects of their Internet scaling projects. Earlier Cathy was at the @Home Network where she was responsible for routing and IP addressing. She began her career at Merit, Inc. where she worked on the NSFNET Backbone. Cathy designed and implemented the OSI/CLNP for the Energy Sciences Network. Although OSI/CLNP was never widely deployed, the experience has given greater insight into addressing and scaling issues. Cathy joined the Advisory Council in June 1998 first serving an interim six-month term before being re-elected later that year to a three-year term. She was re-elected to the AC in 2001, 2004, 2007, 2010, and 2013. Her term expires 31 December 2016.

Owen DeLong owen at delong dot com

Owen DeLong is currently a Senior Network Architect at Akamai. He also occasionally provides IP-related consulting and training services to other organizations. Owen has been an IPv6 Evangelist and Director of Professional Services at Hurricane Electric, a Senior Backbone Engineer at Exodus Communication before working at Tellme Networks and Netli in both Network Engineering and Operations, a consultant (C2 Company), and Senior Operations Architect at Vusion, Inc. Owen has been an active participant in the ARIN public policy process for more than a decade and has been involved in such landmark efforts as the creation of Provider Independent IPv6, moving the IPv4 PI boundary down to /22 and subsequently /24, special resource policies to assist in the AFRINIC startup, etc. Owen has always believed that ARIN's role is the equitable distribution of IP resources and continues to work toward that end. Owen has a special interest in policy as it relates to IPv4 exhaustion and IPv6 deployment. Owen was elected to the AC in October of 2007, and re-elected in 2010 and 2013. His current term expires 31 December 2016.

Andrew Dul sleibrand at internap dot com

Andrew Dul is currently a member of the Cloud Engineering team at Crowdstrike. He is also an independent networking & systems infrastructure consultant at 8 Continents Networks LLC and has been working in various Internet networking positions since 1996. Over the years, he has held various positions including network operations roles at the start-up network service provider Internap and working on the Internet in the sky at Connexion by Boeing. During his time at The Boeing Company, he helped develop the global network that supported the first commercial inflight Internet service. He also helped engineer the first IP based GSM & CDMA flying pico cell demonstration flights in 2005. After Boeing, Andrew served the Seattle based nationwide law firm, Perkins Coie, as their Systems and Network Architect before joining Cascadeo in 2010 as a lead engineer. Andrew has been involved with ARIN since 1999 helping to contribute to the development of global IP number resource policy. Andrew holds a Bachelors of Science in Electrical Engineering from the University of California, Davis and a Masters in Business Administration with a Leadership Formation specialization from Seattle University, Albers School of Business and Economics. He also formerly served on the ARIN Advisory Council from 2003-2005. His current term expires 31 December 2017.

David Farmer sleibrand at internap dot com

David Farmer is a Senior Network Design Engineer at the University of Minnesota. He has a member of the University's Office of Information Technology, servicing in varying networking roles, for the last 19 years.  He is the Chair of the BOREAS-Net Technical Team, which oversees the day to day technical and operational aspects of a 1500 mile dark fiber DWDM network for the University and other participants. He is also active in Internet2 as the University of Minnesota's and Northern Lights GigaPOP's Technical Representative since 1999.  David was elected to the AC in October of 2008 and re-elected in 2011 and 2014. His term expires 31 December 2017.

David Huberman

David Huberman runs the IP addressing shop for Oracle's Bare Metal Cloud product. Prior to joining Oracle, David worked at Microsoft, Global Crossing, Telocity, and PBS. David also spent 10 years as a staffer at ARIN. David has a Bachelor of Arts degree in both Geography and Telecommunications from Indiana University. He was elected to the Advisory Council in October of 2014 for a one-year term, and was re-elected in 2015. His current term expires 31 December 2018.

Scott Leibrand sleibrand at internap dot com 

Scott Leibrand is Director of Network and Architecture at DLVR, a startup working to optimize Internet video streaming through in-the-cloud performance measurement and real-time per-user optimization. In his spare time, he is also co-inventor of the Open Artificial Pancreas System ( ,an open-source artificial pancreas system that automatically adjusts insulin dosing to help manage type 1 diabetes.

Scott's participation in the ARIN Public Policy process is focused on helping the ARIN community create policies to continue responsible stewardship of all IP address resources through depletion and exhaustion of the IPv4 free pool and adoption of IPv6. Scott was elected to the AC in October of 2007, and was re-elected in October of 2010 and re-elected in 2013. His current term expires 31 December 2016.

Tina Morris tinapmorris at gmail dot com

Tina Morris is currently a Technical Developer at Amazon specializing in the strategy and deployment of IPv4 and IPv6 address resources. Prior to this Tina was working as a Network Engineer in the Cable Industry at Time Warner Cable and Bright House Networks for 10+ years and she has been in a role focused on IP strategy since 2009. Tina was elected to the AC in 2013, her current term expires 31 December 2016.

Dr. Milton Muellermmueller at syr dot edu

Milton Mueller is Professor at the Georgia Institute of Technology School of Public Policy, USA. His research focuses on rights, institutions and global governance in communication and information industries. Currently, he is doing research on the relationship between foreign policy, cybersecurity and Internet governance; IP addressing policy, and the security governance practices of ISPs. He is the author of two seminal books on Internet governance, Ruling the Root (2002) and Networks and States (2010). As a co-founder of ICANN's Noncommercial Users Constituency, he has played a leading role in organizing and mobilizing civil society in ICANN, the Internet Governance Forum and OECD. From 1998-2015 he was Professor at the Syracuse University School of Information Studies. Mueller received the Ph.D. from the University of Pennsylvania's Annenberg School in 1989. Milton was elected to the AC in 2012 for a one-year term and re-elected in 2013. His current term expires 31 December 2016.

Amy Potter

Amy Potter is the Vice President of Hilco Streambank, where she heads up Hilco Streambank's IPv4 address brokerage business. Amy works with ISPs, hosting companies, datacenters and others to acquire IPv4 address space and navigate RIR transfer policies. Amy led the creation of in order to increase transparency and efficiency in the IPv4 market. Amy is interested in lending her expertise in the IPv4 market to help create policies that make sense in a post-IPv4 exhaustion world. Amy has a law degree from the University of Notre Dame, and a Bachelor's degree from Santa Clara University. She was elected to the AC in October of 2015. Her current term expires 31 December 2018.

Leif Sawyer

Leif Sawyer is currently an IP Engineer at General Communications, Inc., having been employed there for roughly 20 years.  His areas of focus include IPv4 and IPv6 deployment strategy, network security, VOIP infrastructure, customer experience, and network management automation. Previously, Leif has worked for the University of Alaska Anchorage and as an independent contractor in the telecommunications industry.  He was elected to the AC in October of 2014. His current term expires 31 December 2017.

Robert Seastrom rs at seastrom dot com

Robert Seastrom is a Principal Engineer in the ATG Architecture Group at Time Warner Cable. His industry experience spans a quarter century of engineering and management positions at small and large ISPs, hosting providers, and maintaining critical Internet infrastructure. Robert has also held positions at Afilias, Neutral Net, Inter.Net Global Ltd., Akamai Technologies, AboveNet Communications, and Digex, and built pioneering ISPs in Japan and the Republic of Georgia. His nonprofit service includes cofounding and serving as first president of the Cambridge Bandwidth Consortium (a cooperative ISP in Massachusetts), the NANOG Board of Directors, and board positions with educational organizations related to amateur radio and firearm safety. First elected to the AC in October of 2003, Robert was re-elected in 2006, 2009, 2012, and 2015. His current term expires 31 December 2018.

John Springer

John Springer recently retired from an 18 year career as the Manager of Information Technology for Inland Telephone Company, a small ILEC in Washington and Idaho. Prior to that, he worked for guiding Independent Local Exchange Carriers, Rural Electric Co-ops and others in setting up Internet operations. He has been responsible for developing Inland's Internet business from the dial up era to today's cable, DSL and wireless broadband. His duties covered the full small network spectrum; IP address planning, WAN engineering and strategy, management of customer network operations, corporate LAN, tech support call center and training. He has been active in ARIN since 2005. John was elected to the AC in October of 2012, and re-elected in 2015. His current term expires 31 December 2018.

Chris Tacit

Chris Tacit draws on over 34 years of experience in the communications, information technology and not-for-profit sectors, Chris is the founder of the firm Tacit Law, which provides legal and business advice to domestic and international clients who wish to obtain high-quality, personalized and cost-effective services. He provides legal, regulatory, and advocacy services related to all aspects of communication, Internet, technology and not-for-profit law and policy, and he assists clients with strategic planning, governance, risk management, business reviews, commercial transactions, as well as corporate and regulatory compliance. Chris is a: (1) member of the Bars of Ontario, Alberta, Northwest Territories and Nunavut; (2) registered Trade-mark agent in Canada; and (3) licensed professional engineer in Ontario. He has an Electrical Engineering degree from the University of Waterloo, as well as Bachelor of Laws and Master in Business Administration degrees from the University of Ottawa. Chris serves on the boards of a number of not-for-profit corporations, including two Internet-related multi-stakeholder organizations, in which he also holds senior officer roles. He has published a number of articles and has taught at the post-secondary level. He was elected to the AC in October of 2014. His current term expires 31 December 2017.

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