NEW YORK (AP) — The organization overseeing a major expansion of Internet addresses has reopened its system for letting companies and organizations submit proposals.

The Web-based system had been shut down since April 12 because of a software glitch that exposed some private data. At the time, the system was supposed to reopen within four business days. But it took longer to fix the problem and to notify affected applicants.

Up to 1,000 domain name suffixes — the ".com" part of an Internet address — could be added each year in the most sweeping change to the domain name system since its creation in the 1980s.

The Internet Corporation for Assigned Names and Numbers, or ICANN, has extended the deadline for submitting proposals to May 30.

Each application costs $185,000.