Hurricane Electric

Hurricane Electric Public Stratum 1 NTP Servers

Chronus


Overview

Hurricane Electric maintains several geographically dispersed public stratum 1 NTP (Network Time Protocol) servers for use by customers and the general public. NTP is used to synchronize computer clocks to UTC. This service is provided on an as is basis and without guarantee.

Stratum 1 NTP servers get their time from reference clocks via methods such as GPS, CDMA, or WWV. Stratum 2 NTP servers get their time from stratum 1 NTP servers.

If you operate a large number of hosts (i.e. multiple webservers) please set up a stratum 2 NTP server of your own for your hosts to query. Set your stratum 2 NTP server to query stratum 1 NTP servers. This will help reduce the load on our stratum 1 NTP servers. There are multiple free NTP packages available. For Unix see www.ntp.org

Each of your hosts should not run its own NTP server. Hosts should only query an NTP server once a day. When used NTP will typically adjust your systems clock by a very small amount (often less than a second) to compensate for drift.

NTP Servers

clock.sjc.he.net (216.218.254.202)
Location: Hurricane Electric, San Jose, California
Synchronization: NTP V4 primary (CMDA), Endrun Praecis CNTP
Service Area: all areas
Access Policy: open access
Contact: support@he.net

clock.fmt.he.net (216.218.192.202) [2001:470:0:50::2]
Location: Hurricane Electric, Fremont, California
Synchronization: NTP V4 primary (GPS), Symmetricom NTS-150
Service Area: all areas
Access Policy: open access
Contact: support@he.net

clock.nyc.he.net (209.51.161.238) [2001:470:0:2c8::2]
Location: Hurricane Electric, New York City, New York
Synchronization: NTP V4 primary (CMDA), Endrun Praecis CNTP
Service Area: all areas
Access Policy: open access
Contact: support@he.net


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