The Internet Corporation for Assigned Names and Numbers (ICANN) has said that it will be notifying those who applied for their own unique generic top-level domains (gTLD), such as .London or .Apple, as to whether or not their data has been viewed by other applicants.
Notification of the data breaches will be made directly to affected organisations by 8th May.
It was revealed last month, on the day of ICANN's deadline, that the application process would have to be suspended due to a glitch in its TAS submissions software. The glitch led to applicants being able to see user or file names of other applicants.
"We're very apologetic for the inconvenience to any applicants," ICANN chief executive Rod Beckstrom told Reuters.
Beckstrom also said that ICANN would take every step it could to make sure no-one takes advantage of any information they may have obtained, but did not give details as to what exactly these steps might be.
Some 1,268 organisations had registered for the application process when the site was taken down. There are plans to reopen the application window for an extra five days, although the start date for this is yet to be confirmed.
ICANN has said that the bug has now been fixed and it is extensively testing the system to ensure it does not experience future problems.
The introduction of new gTLDs has divided opinion in the industry, with some claiming that it forces companies to spend hundreds of thousands of pounds in fear of not securing their own company name and adds confusion to a system that was fairly simple. Others argue it will be an opportunity for companies to exploit new branding and advertising opportunities.
The standard application cost for a company applying to ICANN for a gTLD is $185,000 (£120,000).