The Netherlands has been hit by its largest telecommunications outage in recent history, with emergency service numbers knocked out across the country.
The disruption, which lasted four hours, originated from national carrier Royal KPN, and affected other providers linked to its network.
KPN said the cause was still unclear but did not appear to be a hack.
Landlines and mobile phones linked to the KPN network were also affected.
KPN’s board director Joost Farwerck said the network had been backed up to prevent any malfunction, but the backups had not worked.