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 26 Apr 11:07:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* erquy.linocomm.net            2   9   377    18   +147us[  +70us] +/- 6641us
^+ 2a10-3781-08cc.connected>     2  10   377   854   +661us[ +816us] +/- 7381us
^- ntp-public-2.oma.be           2   8   377   136   +684us[ +609us] +/-   36ms
^+ ntp0.rrze.uni-erlangen.de     1   9   377   373  -4182us[-4253us] +/-   11ms
^+ d54c70bd3.static.telenet>     1  10   377   229  +5682us[+5609us] +/-   11ms
^+ 82-64-45-50.subs.proxad.>     1  10   377   836  +1003us[+1158us] +/- 9958us

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

NTP4 error
Sun 26 Apr 11:07:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ ntp0.nl.uu.net                1  10   377   405   -315us[ -683us] +/- 3547us
^* time1.esa.int                 1   9   377   224   -485us[ -860us] +/- 3660us
^+ ntp1.time.nl                  1  10   377  1024   -107us[ -449us] +/- 4235us

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

NTP5 error
Sun 26 Apr 11:07:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   284    -95us[  -16us] +/-   14ms
^+ 2a10-3781-08cc.connected>     2  10   377   408   -709us[ -626us] +/-   14ms
^* ntp0.nl.uu.net                1  10   377    91  +1045us[+1117us] +/- 5474us
^+ time1.esa.int                 1  10   377    76   -733us[ -733us] +/- 7663us
^+ ntp1.time.nl                  1  10   377   171   -786us[ -711us] +/- 8622us

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

NTP9 error
Sun 26 Apr 11:07:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377  1025   -786us[ -779us] +/- 7805us
^- time.fu-berlin.de             1  10   377   714   -630us[ -630us] +/-   63ms
^- ntp1.hetzner.de               2   9   377   349   -689us[ -689us] +/-   21ms
^- ntp2.hetzner.de               2  10   377   835   -495us[ -495us] +/-   35ms
^- ntp3.hetzner.de               2  10   377   997   -273us[ -273us] +/-   53ms

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

NTP16 error
Sun 26 Apr 11:07:01 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2   8   377   161   -629us[ -629us] +/-   37ms
^* ntp0.rrze.uni-erlangen.de     1   7   377   782   -942us[ -883us] +/- 8155us

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

NTP17 error
Sun 26 Apr 11:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   30m   -281us[ -280us] +/- 7980us
^- time.fu-berlin.de             1  10   377   912   -373us[ -373us] +/-   61ms
^- ntp1.hetzner.de               2   9   377   121   -386us[ -386us] +/-   12ms
^- ntp2.hetzner.de               2  10   377    31   -192us[ -192us] +/-   40ms
^- ntp3.hetzner.de               2  10   377   604   -118us[ -118us] +/-   27ms

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

NTP18 error
Sun 26 Apr 11:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^- ntp-public-2.oma.be           2   9   345   334  -3826us[-3877us] +/-   37ms
^* ntp0.rrze.uni-erlangen.de     1   9   377    24  -1082us[-1136us] +/- 8061us

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

NTP20 error
Sun 26 Apr 11:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   177   918  -1830us[-1830us] +/- 8216us
^- time.fu-berlin.de             1  10   377   451  -1779us[-1779us] +/-   68ms
^- ntp1.hetzner.de               2   9   377    41  -1740us[-1740us] +/-   13ms
^- ntp2.hetzner.de               2   9   377   279  -1649us[-1649us] +/-   36ms
^- ntp3.hetzner.de               2  10   377   398  -1511us[-1511us] +/-   30ms

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

NTP21 error
Sun 26 Apr 11:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   588   -281us[ -359us] +/-   12ms
^+ 2a10-3781-08cc.connected>     2  10   377    44   -258us[ -258us] +/-   12ms
^- ntp-public-2.oma.be           2   9   377   484  -2639us[-2718us] +/-   33ms
^* ntp0.rrze.uni-erlangen.de     1  10   377   212  -1787us[-1866us] +/- 8026us
^+ d54c70bd3.static.telenet>     1  10   377   144  +3759us[+3759us] +/- 9840us
^+ 82-64-45-50.subs.proxad.>     1  10   377   990   -191us[ -267us] +/- 7826us

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

NTP22 error
Sun 26 Apr 11:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   200  +1755us[+1755us] +/-   11ms
^* 2a10-3781-08cc.connected>     2  10   377   756   -141us[ -272us] +/-   13ms
^+ ntp-public-2.oma.be           2  10   377   798  +2408us[+2276us] +/-   31ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   295  -4908us[-4908us] +/-   14ms

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

NTP23 error
Sun 26 Apr 11:07:02 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   538  +1981us[+1981us] +/-   12ms
^* 2a10-3781-08cc.connected>     2  10   377   798    -41us[ -122us] +/-   13ms
^+ ntp-public-2.oma.be           2  10   377   217  +2010us[+2010us] +/-   40ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   954  -4714us[-4795us] +/-   14ms

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

NTP24 error
Sun 26 Apr 11:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^+ erquy.linocomm.net            2  10   377   799   +264us[ +542us] +/-   15ms
^? 2a10-3781-08cc.connected>     2  10     0    5d   +157ms[ +369us] +/-   11ms
^- ntp-public-2.oma.be           2  10   377   732  +1150us[+1150us] +/-   32ms
^+ ntp0.rrze.uni-erlangen.de     1  10   377   707  -5857us[-5857us] +/-   14ms
^+ d54c70bd3.static.telenet>     1  10   377   747  +4777us[+4777us] +/-   13ms
^* 82-64-45-50.subs.proxad.>     1  10   377   792   +669us[ +947us] +/- 5533us

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

NTP25 error
Sun 26 Apr 11:07:03 UTC 2026
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* ntps1-0.eecsit.tu-berlin>     1  10   377   460   -351us[ -406us] +/- 8059us
^- time.fu-berlin.de             1  10   377   201   -430us[ -430us] +/-   71ms
^- ntp1.hetzner.de               2   9   377   239   -484us[ -484us] +/-   24ms
^- ntp2.hetzner.de               2   9   377    63   -270us[ -270us] +/-   39ms
^- ntp3.hetzner.de               2   9   377   372   -205us[ -205us] +/-   31ms