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
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   787   +126us[ -131us] +/- 6735us
^* 2a10-3781-08cc.connected>     2  10   377   498   +256us[-2605ns] +/- 6410us
^- ntp-public-2.oma.be           2  10   377   246   +333us[ +333us] +/-   34ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   811  -3852us[-4108us] +/-   11ms
^+ d54c70bd3.static.telenet>     1  10   377     7  +2680us[+2680us] +/- 8061us
^+ 82-64-45-50.subs.proxad.>     1  10   377   781   +797us[ +541us] +/- 9895us

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

NTP4 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ ntp0.nl.uu.net                1  10   377   245    +48us[  -61us] +/- 3754us
^* time1.esa.int                 1   9   377   217   -326us[ -436us] +/- 3601us
^+ ntp1.time.nl                  1   9   377   223   -239us[ -349us] +/- 4249us

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

NTP5 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   445  -1292us[-1296us] +/-   13ms
^+ 2a10-3781-08cc.connected>     2  10   377   709   +203us[ +199us] +/-   11ms
^* ntp0.nl.uu.net                1  10   377   437   +363us[ +358us] +/- 5471us
^+ time1.esa.int                 1  10   377  1021   -154us[ -158us] +/- 8974us
^+ ntp1.time.nl                  1  10   377   590  +1719us[+1714us] +/- 8702us

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

NTP9 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377    47   -392us[ -598us] +/- 7376us
^- time.fu-berlin.de             1  10   377   609   -767us[ -964us] +/-   60ms
^- ntp1.hetzner.de               2  10   377   32m   -627us[ -803us] +/-   40ms
^- ntp2.hetzner.de               2  10   377   424  -1537us[-1737us] +/-   24ms
^- ntp3.hetzner.de               2  10   377   277   -366us[ -568us] +/-   34ms

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

NTP16 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2   9   377   253   -438us[ -438us] +/-   35ms
^* ntp0.rrze.uni-erlangen.de     1   9   377   389   +889us[+1027us] +/- 7224us

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

NTP17 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   748   -309us[ -223us] +/- 8091us
^- time.fu-berlin.de             1  10   377   657   -383us[ -383us] +/-   60ms
^- ntp1.hetzner.de               2  10   377   269   -466us[ -466us] +/-   23ms
^- ntp2.hetzner.de               2  10   377  1025   -313us[ -226us] +/-   44ms
^- ntp3.hetzner.de               2   9   377   511   -218us[ -218us] +/-   29ms

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

NTP18 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2   8   377   207  -1319us[-1319us] +/-   36ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   923    +41us[ +285us] +/- 6952us

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

NTP20 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   975   -310us[ -321us] +/- 8247us
^- time.fu-berlin.de             1  10   377   666   -256us[ -256us] +/-   60ms
^- ntp1.hetzner.de               2  10   377   706   -314us[ -314us] +/-   26ms
^- ntp2.hetzner.de               2  10   377   306   -189us[ -189us] +/-   23ms
^+ ntp3.hetzner.de               2  10   377    94   -116us[ -116us] +/-   35ms

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

NTP21 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   909   -199us[ -390us] +/- 9287us
^+ 2a10-3781-08cc.connected>     2  10   377   779   -192us[ -385us] +/- 9530us
^- ntp-public-2.oma.be           2  10   377   754  -1959us[-2152us] +/-   27ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   135   -643us[ -643us] +/- 6995us
^* d54c70bd3.static.telenet>     1  10   377   718  +2475us[+2282us] +/- 8536us
^+ 82-64-45-50.subs.proxad.>     1  10   377   773   -454us[ -647us] +/- 7510us

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

NTP22 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   244    +81us[  +81us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   176   +251us[ +251us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377    92  -1153us[-1153us] +/-   43ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   509   +200us[ +200us] +/- 8063us

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

NTP23 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   258   +248us[ +248us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377   29m   +148us[ +144us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377   655   +367us[ +367us] +/-   33ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   706   -108us[  -75us] +/- 7818us

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

NTP24 error
Fri 15 May 10:43:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377  1018  -1818us[-1839us] +/-   13ms
^? 2a10-3781-08cc.connected>     2  10     0   24d   +151ms[ +369us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377    34   +800us[ +800us] +/-   44ms
^+ ntp0.rrze.uni-erlangen.de     1   9   377    13   -502us[ -502us] +/- 8109us
^+ d54c70bd3.static.telenet>     1  10   377    36  +3179us[+3179us] +/- 9444us
^* 82-64-45-50.subs.proxad.>     1  10   377  1015   -196us[ -217us] +/- 5771us

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

NTP25 error
Fri 15 May 10:43:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   367   295  -1126us[-1128us] +/- 8853us
^- time.fu-berlin.de             1  10   377   315   -562us[ -564us] +/-   65ms
^- ntp1.hetzner.de               2   8   377   122   -615us[ -615us] +/-   25ms
^- ntp2.hetzner.de               2  10   377     1   -510us[ -510us] +/-   28ms
^- ntp3.hetzner.de               2   9   377   101   -417us[ -417us] +/-   35ms