Marc A. Lindsey

2101 L Street NW Suite 300 Washington, DC 20037

President and Co-founder

Marc has deep experience and unique expertise in protecting and conveying IPv4 assets.

Marc has been an active participant and influencer in the IPv4 market since well before its public emergence in March of 2011 with the announcement of the Nortel and Microsoft transaction. Marc started his IPv4 practice while a partner in the information and communications technology boutique law firm, Levine, Blaszak, Block & Boothby, LLP (“LB3”).

He has served as principal advisor and IPv4 broker to many of the largest IPv4 block holders over the past 12+ years – providing his clients with strategic and tactical advice that allows them to assess their IPv4 assets, quantify the risks and rewards of IPv4 market participation, and pursue monetizing strategies effectively.

Marc specializes in structuring IPv4 market conveyance arrangements to minimize transactional frictions, mitigate risks, optimize deal size and timing, and enhance value for both parties. Drawing from his senior-level contacts at many leading technology, investment banking, and brokerage firms, Marc has formed collaborative relationships to develop and deliver solutions that address key IPv4 market challenges. Marc also routinely works (constructively) with Internet governance stakeholders to promote progressive IPv4 registration and transfer policies and practices.

As head of LB3’s technology law practice group, Marc has negotiated numerous other complex and unique technology transactions for Fortune 100s over his 25 year career as a technology transactions advisor. Prior to founding Avenue4 and before starting his law career, Marc was a systems engineer for GE Aerospace, where he led engineering teams that designed, developed, and tested large-scale software applications and satellite systems.

He frequently speaks and writes on current topics at the intersection of commerce, technology and the law. Illustrative examples include the following:

  • Co-Author – An Insider's Guide to the IPv4 Market - Updated, CircleID (July 10, 2018)
  • Author – Unlocking the Hidden Value within Your IT Organization, CircleID (August 3, 2017)
  • Co-Author – An insider’s guide to the private IPv4 market, Network Word (May 27, 2015)
  • Author – Protect your pre-1997 IP address: With IPv4 space running out any day now, is your legacy IP address space safe?, Computerworld (December 10, 2010)
  • Quoted Extensively – Does ARIN have the right to approve all IPv4 address sales? Network World (May 11, 2011)
  • Speaker – The IPv4 Address Trading Market: The Pros & Cons of Internet Number Trades, CCMI online seminar (October 18, 2011)
  • Co-author – Negotiating Private Cloud Transactions, No Jitter (April 7, 2014)
  • Co-author – Finessing On-Demand Software Deals: How to Mitigate Your Risk When Getting Your Software on Tap, Computerworld (September 11, 2006)
  • Speaker – Infrastructure in the Cloud: Getting the Right Deal, Computerworld SNW Conference (October 10-13, 2011)


J.D. (with honors) from the University of North Carolina School of Law

M.S. in Systems Engineering from the University of Pennsylvania

B.S. in Electrical Engineering from Howard University