Connect to NTP Servers

These are the technical details for Netnod’s NTP service and how to reach our Internet Time servers.

Internet time servers (NTP) available at Netnod. The time services are part of the value added IX services at Netnod, availably through peering directly with Netnod (AS8674). 

Netnod's Internet Time servers (Stratum-1) are public and can be reached at: 





Anycast address for nearest NTP server of the above:



SP Technical Research Institute of Sweden, (RISE) has an NTP service. The service is free of charge and is provided by four NTP-servers for both IPv4 and IPv6.

RISE Borås :    2001:6b0:42:1::123  2001:6b0:42:2::123

RISE location in Stockholm:  2001:6b0:42:3::123  2001:6b0:42:4::123

Below you will find information about activities within national and international time keeping, time synchronisation, research and calibration services. 

SP Technical Research Institute of Sweden, (RISE) pages


More about the Netnod NTP services

More information about the Netnod IX NTP services can be found here


During 2015, Netnod worked with the PTS and the SP National Laboratory to develop the infrastructure for a more robust, nationwide time distribution service.

The Swedish national time scale is produced by the SP National Laboratory for Time and Frequency. It is distributed to the community using high-performance Network Time Protocol (NTP) servers operated by Netnod at Internet exchange points throughout Sweden.