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
Sun 17 May 03:28:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* erquy.linocomm.net            2  10   377   100   +456us[ +448us] +/- 7236us
^+ 2a10-3781-08cc.connected>     2  10   377   548    +20us[  +16us] +/- 6404us
^- ntp-public-2.oma.be           2  10   377   113   +225us[ +217us] +/-   25ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   289  -3813us[-3820us] +/-   11ms
^+ d54c70bd3.static.telenet>     1  10   377   959  +3252us[+3253us] +/- 8328us
^+ 82-64-45-50.subs.proxad.>     1  10   377   666  +1047us[+1045us] +/- 9616us

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

NTP4 error
Sun 17 May 03:28:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ ntp0.nl.uu.net                1  10   377   548    +28us[  +28us] +/- 3349us
^* time1.esa.int                 1  10   377   778   -182us[ -227us] +/- 3578us
^+ ntp1.time.nl                  1  10   377   607    +39us[  +39us] +/- 4350us

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

NTP5 error
Sun 17 May 03:28:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   220  -1109us[-1109us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   695   -664us[ -664us] +/-   10ms
^* ntp0.nl.uu.net                1  10   377   854   -440us[ -502us] +/- 5315us
^+ time1.esa.int                 1  10   377   825   -565us[ -565us] +/- 6347us
^+ ntp1.time.nl                  1  10   377   473  -2236us[-2236us] +/- 9298us

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

NTP9 error
Sun 17 May 03:28:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   22m   -889us[ -904us] +/- 7853us
^- time.fu-berlin.de             1  10   377   980  -2044us[-2044us] +/-   59ms
^- ntp1.hetzner.de               2  10   377   416   -619us[ -619us] +/-   26ms
^- ntp2.hetzner.de               2  10   377   299  -1954us[-1954us] +/-   32ms
^- ntp3.hetzner.de               2  10   377   662  -1680us[-1680us] +/-   31ms

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

NTP16 error
Sun 17 May 03:28:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2   9   377    64  -1735us[-1735us] +/-   27ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   281    +14us[ +224us] +/- 7202us

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

NTP17 error
Sun 17 May 03:28:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   28m   -145us[ -133us] +/- 7855us
^- time.fu-berlin.de             1  10   377     7   -264us[ -264us] +/-   58ms
^- ntp1.hetzner.de               2   8   377   181    +28us[  +28us] +/-   30ms
^- ntp2.hetzner.de               2  10   377   907   -262us[ -262us] +/-   40ms
^+ ntp3.hetzner.de               2  10   377   693   -190us[ -190us] +/-   28ms

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

NTP18 error
Sun 17 May 03:28:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2  10   377   446  -1806us[-2050us] +/-   21ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   274    +17us[ -235us] +/- 6848us

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

NTP20 error
Sun 17 May 03:28:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   32m   -293us[ -199us] +/- 8068us
^- time.fu-berlin.de             1   9   377   472   -349us[ -349us] +/-   59ms
^- ntp1.hetzner.de               2  10   377   262    -53us[  -53us] +/-   29ms
^- ntp2.hetzner.de               2  10   377   634   -321us[ -321us] +/-   44ms
^- ntp3.hetzner.de               2  10   377   254   -266us[ -266us] +/-   35ms

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

NTP21 error
Sun 17 May 03:28:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   789   -637us[ -578us] +/- 9530us
^+ 2a10-3781-08cc.connected>     2  10   377   536   -561us[ -501us] +/- 8914us
^- ntp-public-2.oma.be           2  10   377   609  -2262us[-2202us] +/-   50ms
^* ntp0.rrze.uni-erlangen.de     1  10   377    37   -578us[ -515us] +/- 7075us
^+ d54c70bd3.static.telenet>     1  10   377   598  +2385us[+2445us] +/- 8177us
^+ 82-64-45-50.subs.proxad.>     1  10   377   582   -112us[  -52us] +/- 7514us

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

NTP22 error
Sun 17 May 03:28:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377    35   -344us[ -344us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   963  -1941us[-1915us] +/-   13ms
^- ntp-public-2.oma.be           2  10   377   937   +165us[ +192us] +/-   48ms
^* ntp0.rrze.uni-erlangen.de     1   9   377   359   +218us[ +221us] +/- 8146us

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

NTP23 error
Sun 17 May 03:28:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377    30   +146us[ +146us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   810  -2232us[-2313us] +/-   13ms
^- ntp-public-2.oma.be           2  10   377   433   -310us[ -310us] +/-   24ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   517   -211us[ -293us] +/- 7908us

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

NTP24 error
Sun 17 May 03:28:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   811   +868us[ +823us] +/-   13ms
^? 2a10-3781-08cc.connected>     2  10     0   26d   +124ms[ +369us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377   947   +892us[ +846us] +/-   50ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   910   -498us[ -544us] +/- 7988us
^+ d54c70bd3.static.telenet>     1  10   377   785  +2738us[+2692us] +/-   11ms
^* 82-64-45-50.subs.proxad.>     1  10   377   684   -236us[ -282us] +/- 5393us

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

NTP25 error
Sun 17 May 03:28:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   226  -1236us[-1242us] +/- 8081us
^- time.fu-berlin.de             1  10   377    95  -1539us[-1539us] +/-   59ms
^- ntp1.hetzner.de               2   9   377   298   -972us[ -979us] +/-   28ms
^- ntp2.hetzner.de               2   9   377   296  -1240us[-1246us] +/-   30ms
^- ntp3.hetzner.de               2  10   377   687  -1211us[-1217us] +/-   28ms