NTP internet time servers at linocomm.net

You may delay, but time will not.
Benjamin Franklin (1706-1790)

Nederlands

What is this all about?

Time is one of the most important things in modern society. Without time keeping, it would be difficult to arrange meetings, take the bus or train or be on time on a wedding ceremony. Not only humans rely on time. Every computer has an internal clock which is used when time stamping your email and documents, schedule your backups and warn you when you have an appointment. Therefore also computers should know the current time with some accuracy. To synchronize computers to known good time sources over the internet, the NTP protocol has been defined which allows to obtain the current time from internet time servers.

The servers ntp1.linocomm.net to ntp9.linocomm.net are such public internet time servers, operated by the internet services company Linoplan. The servers provide NTP services to NTP and SNTP clients on the internet. All time servers are at least stratum 2 servers, which means that the servers are directly connected to other time servers which take their time from a number of official reference clocks (atomic clock, radio clock, GPS or whatever) in different geographical regions. Time server ntp4.linocomm.net is a Stratum 1 server located in the Netherlands with its own reference clock. Time synchronisation with several upstream servers in different geographical regions gives redundancy when network failures occur. In practice this means that the time these servers provide are accurate within a few milliseconds. This is good enough for most private and commercial applications.

Server ntp1.linocomm.net is located in a data center in Almaty, Kazakhstan, which makes it the ideal time server for computers in Central Asia, but clients from all over the world are allowed to connect to this server. The only drawback is that distant clients might observe a few more milliseconds error in the received time signal compared to the time served by time servers closer to their location. Time server ntp5.linocomm.net is located in Las Vegas and serves North America. All other servers are located in Western Europe and are primarily intended for the EMEA area. Time server ntp4 is the most accurate in the network because it has its own timebase with a GPS+PPS receiver.

How do I connect to your time servers?

You can add one or more of the server names to your ntpd or chronyd configuration file. With recent versions of ntpd and chronyd you can use the pool directive which adds a pool of servers to the configuration. If you use the pool directive, use the name ntppool.linocomm.net as the domain name.

How well do your time servers perform?

The lists of upstream servers are refreshed every five minutes. The values in the columns delay, offset and jitter are in milliseconds. The delay is a measurement of the network delay when retrieving the time from the remote server. The offset is the current difference between the internal clock of our timeserver and the remote clock. Finally jitter gives the variation in the time difference between subsequent requests.

Current performance for ntp1.linocomm.net (Amsterdam, NL)

NTP1 error
Tue  7 Apr 09:07:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   480   +283us[ +283us] +/- 7998us
^+ 2a10-3781-08cc.connected>     2  10   377    17  +1020us[+1020us] +/- 7706us
^- ntp-public-2.oma.be           2  10   377   371   +281us[ +281us] +/-   33ms
^+ ntp0.rrze.uni-erlangen.de     1   9   377   250  -3930us[-3930us] +/-   11ms
^* d54c70bd3.static.telenet>     1  10   377   773  +4029us[+4045us] +/- 8834us
^+ 82-64-45-50.subs.proxad.>     1  10   377   767  +2527us[+2527us] +/-   12ms

Current performance for ntp4.linocomm.net (Donkerbroek, NL)

NTP4 error
Tue  7 Apr 09:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntp0.nl.uu.net                1  10   377   396   -219us[ -382us] +/- 3664us
^+ time1.esa.int                 1  10   377   990   -480us[ -634us] +/- 4372us
^+ ntp1.time.nl                  1  10   377   726   -697us[ -856us] +/- 4644us

Current performance for ntp5.linocomm.net (Paris, FR)

NTP5 error
Tue  7 Apr 09:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   141   +242us[ +242us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   560  -1682us[-1608us] +/-   14ms
^* ntp0.nl.uu.net                1  10   377   270   +332us[ +415us] +/- 5523us
^+ time1.esa.int                 1  10   377   841   -316us[ -251us] +/- 6075us
^+ ntp1.time.nl                  1  10   377   386   -227us[ -148us] +/- 6940us

Current performance for ntp9.linocomm.net (Nürnberg, DE)

NTP9 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   368  -1252us[-1258us] +/- 8169us
^- time.fu-berlin.de             1  10   377    37   -740us[ -740us] +/-   68ms
^- ntp1.hetzner.de               2   9   377   334  -1140us[-1140us] +/-   29ms
^- ntp2.hetzner.de               2   9   377   119   -641us[ -641us] +/-   16ms
^- ntp3.hetzner.de               2  10   377   322   -412us[ -412us] +/-   37ms

Current performance for ntp16.linocomm.net (Gravelines, DE)

NTP16 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2  10   377   343  -1368us[-1368us] +/-   35ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   463   +290us[ +958us] +/- 7322us

Current performance for ntp17.linocomm.net (Falkenstein, DE)

NTP17 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   714  -1061us[-1058us] +/- 8909us
^- time.fu-berlin.de             1  10   377   688   -298us[ -298us] +/-   58ms
^- ntp1.hetzner.de               2   9   377   223   -597us[ -597us] +/-   31ms
^- ntp2.hetzner.de               2   6   377    61   -271us[ -271us] +/-   11ms
^- ntp3.hetzner.de               2  10   377   589   -229us[ -229us] +/-   32ms

Current performance for ntp18.linocomm.net (Roubaix, FR)

NTP18 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2  10   377   730  -2768us[-2830us] +/-   30ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   678    -76us[ -139us] +/- 7112us

Current performance for ntp20.linocomm.net (Falkenstein, DE)

NTP20 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   589   -370us[ -383us] +/- 8020us
^- time.fu-berlin.de             1  10   377   563   -508us[ -508us] +/-   60ms
^- ntp1.hetzner.de               2   9   377   229   -776us[ -776us] +/-   31ms
^- ntp2.hetzner.de               2   6   377     5   -448us[ -448us] +/-   12ms
^- ntp3.hetzner.de               2   9   377   164   -403us[ -403us] +/-   18ms

Current performance for ntp21.linocomm.net (Roubaix, FR)

NTP21 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   615   -135us[ -125us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   483   +169us[ +179us] +/-   13ms
^- ntp-public-2.oma.be           2   9   377   333  -3280us[-3269us] +/-   36ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   133   -526us[ -514us] +/- 7130us
^+ d54c70bd3.static.telenet>     1  10   377    59   -778us[ -778us] +/- 5720us
^+ 82-64-45-50.subs.proxad.>     1  10   377   198    +99us[ +110us] +/- 7573us

Current performance for ntp22.linocomm.net (Paris, FR)

NTP22 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   211  +1851us[+1851us] +/-   12ms
^* 2a10-3781-08cc.connected>     2  10   377   497    -28us[ +490us] +/-   14ms
^+ ntp-public-2.oma.be           2  10   377   638  +3303us[+3816us] +/-   36ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   320  -4404us[-4404us] +/-   14ms

Current performance for ntp23.linocomm.net (Paris, FR)

NTP23 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377  1032  +2954us[+2995us] +/-   14ms
^* 2a10-3781-08cc.connected>     2  10   377    72   -403us[ -362us] +/-   14ms
^+ ntp-public-2.oma.be           2  10   377    99  +2961us[+3002us] +/-   28ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   290  -4000us[-3959us] +/-   14ms

Current performance for ntp24.linocomm.net (Paris, FR)

NTP24 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   227   +488us[ +475us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   853  -1666us[-1679us] +/-   14ms
^- ntp-public-2.oma.be           2  10   377   461  +1689us[+1677us] +/-   38ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   208  -5458us[-5471us] +/-   13ms
^+ d54c70bd3.static.telenet>     1  10   377   28m  +5333us[+5363us] +/-   11ms
^* 82-64-45-50.subs.proxad.>     1  10   377     3   +992us[ +979us] +/- 6225us

Current performance for ntp25.linocomm.net (Falkenstein, DE)

NTP25 error
Tue  7 Apr 09:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   461   -513us[ -476us] +/- 8360us
^- time.fu-berlin.de             1   9   377   428   -436us[ -436us] +/-   62ms
^- ntp1.hetzner.de               2   8   377    45   -644us[ -644us] +/-   34ms
^- ntp2.hetzner.de               2   6   377     3   -363us[ -363us] +/-   12ms
^- ntp3.hetzner.de               2  10   377   452   -338us[ -338us] +/-   34ms