The Commerce Department maintains the master database for such top-level domain names as .com and .net, as well as the corresponding numeric addresses, but has contracted out that work to the Internet Corporation for Assigned Names and Numbers. Assistant Secretary of Commerce Lawrence Strickling said he asked ICANN to convene a process for a formal transition, which he said must “support and enhance the multistakeholder model” and “maintain the openness of the Internet.” ICANN Chief Executive Fadi Chehadé said the process would be completed before ICANN’s management contract with the Commerce Department expires in September 2015. The United States, which gave birth to the Internet, has long said it wants to hand over stewardship and has taken many steps toward that. The push has accelerated following disclosures from former National Security Agency contractor Edward Snowden, whose documents showed that U.S. intelligence officials scanned vast amounts of Internet traffic.