PTCL's problems had a knock-on effect on other service providers, including on cellular data. Telenor Pakistan, backed by Norway's Telenor, said its internet network was down because of a network issue at its internet service provider. Widespread internet blackouts were reported in Islamabad and Lahore where fixed-line broadband users, as well as cellular network users, reported no connectivity. But numerous users reported that the country's largest telecommunications provider, Jazz, owned by Amsterdam-listed global provider Veon, was up and running. "Jazz network is by and large unaffected with our robust architecture and multiple layers of protection to provide consistent experience to our users," Jazz's head of external communications, Khayyam Siddiqi, told Reuters. He said the provider was experiencing a spike in data traffic following the outages on other networks.