The meeting will examine the strength, reliability and security of the Internet's address system, the importance of Internet communications during crises, proposed policies for dealing with crises and improving readiness for them, according to a statement released by ICANN.
Ignoring these questions in light of the attacks would be irresponsible, said ICANN president and chief executive officer, M Stuart Lynn, in the statement.
ICANN had asked its members to comment on whether the meeting should be held or not. The response was overwhelmingly in a favour of a meeting, which is scheduled to be held in California.
Although the organisation doesn't know how many people will attend the meeting, a number of overseas members of ICANN are expected, said Mary Hewitt, director of communications for ICANN.
She added that the change in focus would delay the discussion of other business, including international domain names