DOTCOM Act of 2015

Domain Openness Through Continued Oversight Matters Act of 2015 or the DOTCOM Act of 2015 Prohibits the Assistant Secretary of Commerce for Communications and Information from relinquishing or agreeing to any proposal relating to the relinquishment of the responsibility of the National Telecommunications and Information Administration (NTIA) over Internet domain name system functions until the Government Accountability Office (GAO), within one year after the NTIA receives a relinquishment proposal developed in a process convened by the Internet Corporation for Assigned Names and Numbers at the request of the NTIA, submits a report to Congress regarding the NTIA's role with respect to the system. Requires the GAO's report to include: (1) advantages and disadvantages of such a relinquishment of the NTIA's responsibility; (2) any principles or criteria that the NTIA sets for relinquishment proposals, as well as an analysis of each proposal received by the NTIA; (3) the processes used by the NTIA and any other federal agencies for evaluating proposals; (4) any national security or network security concerns; and (5) a definition of "multistakeholder model" as used by the NTIA with respect to Internet policymaking and governance.