Some internet services have been restored in North Korea after analmost unprecedented internet outage, amid a cyber security row with the US.
Though there has been no comment from the authorities in Pyongyang, US experts reported the restoration.
Some analysts say the country's web access was cut entirely for a time.
Washington said it would launch a proportional response to a cyber-attack on Sony Pictures, which made a comedy about North Korean leader Kim Jong-un.
Officials would not comment on any US involvement in the current outages.
Meanwhile, China's permanent representative to the United Nations has called for all sides to avoid an escalation of tension on the Korean Peninsula after the UN security council put the North's human rights record on its agenda.