London-based network operator Colt Telecommunications crashed yesterday leaving customers in eight European cities without services from the early morning.
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Those affected included UK communications regulator Ofcom, whose website and e-mail services were unavailable. An Ofcom spokesman said service was restored by early evening, but a Colt spokesman said they were still working to restore service across the network.
The outage hit Colt data services in London, Brussels, Geneva, Dublin, Zurich, Milan, Frankfurt, and Amsterdam, with Vienna being affected later.
"At this stage we have an open mind about the cause," the spokesman said. Colt's priority was to restore services, she said.
A "small proportion" of Colt's customers had been affected, "But obviously, that's very important to them," she said.
Colt's network reaches 13 countries, providing "last-mile" fibre to over 16,000 buildings in 35 European cities. The operator provides wholesale and managed voice and data services.
It recently completed its carrier Ethernet-based multi-service platform which delivers metro-scale Ethernet services, national and international Ethernet, IP VPN and internet access services.