A breakdown in an international undersea cable network disrupted Internet links to India, Egypt and Gulf Arab countries.
India reported serious disruptions to its services and one Indian Internet service provider linked the problem to the Egyptian outage.
"There has been a cable cut on several cable systems in Alexandria, Egypt which has impacted internet connectivity in India," Videsh Sanchar Nigam Ltd (VSNL), an internet service provider, said in a statement.
VSNL said its service had been "largely restored" by diverting to another cable.
India said it had lost more than half of its capacity.
"There has been a 50 to 60 percent cut in bandwidth," Rajesh Chharia, president of the Internet Service Providers' Association of India, told Reuters.
