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  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* erquy.linocomm.net            2  10   377   840   -109us[ -630us] +/- 6564us
^+ 2a10-3781-08cc.connected>     2  10   377   236   -298us[ -298us] +/- 6303us
^- ntp-public-2.oma.be           2  10   377   521   -834us[ -834us] +/-   50ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   312  -4903us[-4903us] +/-   11ms
^+ d54c70bd3.static.telenet>     1  10   377   357  +5319us[+5319us] +/-   12ms
^+ 82-64-45-50.subs.proxad.>     1  10   377   764  +1091us[+1091us] +/-   11ms

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

NTP4 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ ntp0.nl.uu.net                1  10   377   598   -137us[ -295us] +/- 3669us
^* time1.esa.int                 1   9   377   103   -669us[ -832us] +/- 3540us
^+ ntp1.time.nl                  1  10   377   570   -165us[ -324us] +/- 4907us

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

NTP5 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   375   +528us[ +528us] +/-   11ms
^+ 2a10-3781-08cc.connected>     2  10   373    35  -1875us[-1875us] +/-   12ms
^* ntp0.nl.uu.net                1  10   377   533   +126us[ +194us] +/- 5526us
^+ time1.esa.int                 1  10   377   472   -614us[ -614us] +/- 9183us
^+ ntp1.time.nl                  1  10   377   20m   -448us[ -382us] +/- 6910us

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

NTP9 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   25m   -388us[ -409us] +/- 7674us
^- time.fu-berlin.de             1  10   377   589   -325us[ -325us] +/-   67ms
^- ntp1.hetzner.de               2   9   377    54   -748us[ -748us] +/-   45ms
^- ntp2.hetzner.de               2  10   377   193  -1790us[-1790us] +/-   16ms
^- ntp3.hetzner.de               2   9   377   417   +376us[ +376us] +/-   22ms

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

NTP16 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2  10   377   757  -1792us[-1711us] +/-   48ms
^* ntp0.rrze.uni-erlangen.de     1  10   377    32    +99us[ +184us] +/- 9193us

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

NTP17 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377    50   -487us[ -482us] +/- 8390us
^- time.fu-berlin.de             1  10   377   147   -332us[ -327us] +/-   58ms
^- ntp1.hetzner.de               2  10   377   981   -503us[ -498us] +/-   32ms
^- ntp2.hetzner.de               2   7   377    56   +130us[ +135us] +/-   15ms
^- ntp3.hetzner.de               2   9   377   381   +245us[ +250us] +/-   21ms

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

NTP18 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2   9   377    55  -2869us[-2869us] +/-   27ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   416    -23us[  -73us] +/- 6998us

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

NTP20 error
Sun  3 May 08:37:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   113   +198us[ +183us] +/- 8348us
^- time.fu-berlin.de             1   9   377   157   +121us[ +108us] +/-   58ms
^- ntp1.hetzner.de               2  10   377   148    -22us[  -35us] +/-   44ms
^- ntp2.hetzner.de               2   7   377     9   +618us[ +618us] +/-   12ms
^- ntp3.hetzner.de               2   8   377   139   +717us[ +704us] +/-   14ms

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

NTP21 error
Sun  3 May 08:37:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   754   +370us[ +370us] +/-   11ms
^+ 2a10-3781-08cc.connected>     2  10   377   932    +64us[  +64us] +/-   11ms
^- ntp-public-2.oma.be           2   9   377   324  -3105us[-3105us] +/-   23ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   314   -286us[ -286us] +/- 6941us
^* d54c70bd3.static.telenet>     1  10   377  1020  +5763us[+5764us] +/-   11ms
^+ 82-64-45-50.subs.proxad.>     1  10   377   201   -110us[ -110us] +/- 7282us

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

NTP22 error
Sun  3 May 08:37:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   375   262  +2097us[+2217us] +/-   11ms
^* 2a10-3781-08cc.connected>     2  10   377   261  +1900us[+2020us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377   345  +1529us[+1647us] +/-   29ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   937  -4439us[-4326us] +/-   14ms

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

NTP23 error
Sun  3 May 08:37:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   421  +1922us[+1922us] +/-   15ms
^* 2a10-3781-08cc.connected>     2  10   377   563   -260us[ -226us] +/-   12ms
^- ntp-public-2.oma.be           2  10   377    95  +2947us[+2947us] +/-   31ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   965  -4672us[-4639us] +/-   14ms

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

NTP24 error
Sun  3 May 08:37:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   133   +858us[ +823us] +/-   11ms
^? 2a10-3781-08cc.connected>     2  10     0   12d    +84ms[ +369us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377   951    -93us[ -126us] +/-   48ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   539  -6147us[-6181us] +/-   14ms
^+ d54c70bd3.static.telenet>     1  10   377    89  +3330us[+3330us] +/- 9928us
^* 82-64-45-50.subs.proxad.>     1  10   377   113   +381us[ +346us] +/- 5670us

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

NTP25 error
Sun  3 May 08:37:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   699   -226us[ -230us] +/- 8213us
^- time.fu-berlin.de             1  10   377   259   -494us[ -494us] +/-   72ms
^- ntp1.hetzner.de               2   9   377   369   -653us[ -653us] +/-   41ms
^- ntp2.hetzner.de               2   6   377    33    -71us[  -71us] +/-   15ms
^- ntp3.hetzner.de               2   7   377   104    +24us[  +24us] +/-   14ms