At one point a majority of the country's international routes were also down, reported Renesys, a firm that studies Internet traffic flows.
Internet through DSL (digital subscriber line) was momentarily unblocked for Tripoli in the late hours of Saturday local time, a resident Ahmed Shreef said in an e-mail on Sunday. But the Internet was once again blocked by Sunday, he said.
Shreef was unwilling to discuss how he had access to Google's Gmail after the Internet service was blocked again. "I cannot discuss that," he said.
A number of Libyan groups from within Tripoli and outside the country reported through messages on Twitter that the Internet had been restored late Saturday. Some messages on Twitter advised caution. "Not sure what the catch is," said Shreef, for example, in .
Something very strange was going on with Tripoli residents' Internet access, Renesys said in on Sunday. "Service was restored suddenly in Tripoli, flickered on and off for a couple of hours, and then died, with the majority of the country's international BGP (Border Gateway Protocol) routes withdrawn from service for good measure," it said.