# Uncategorized **URL:** https://community.ntppool.org/c/uncategorized/1.md [Latest](https://community.ntppool.org/latest.md) · [Categories](https://community.ntppool.org/categories.md) · [Tags](https://community.ntppool.org/tags.md) --- ## [Welcome to Discourse](https://community.ntppool.org/t/welcome-to-discourse/8)
**Author:** [@system](https://community.ntppool.org/u/system)\ **Replies:** 0\ **Last updated:** [September 1, 2016, 8:11am UTC](https://community.ntppool.org/t/welcome-to-discourse/8 "2016-09-01T08:11:15Z")
This is a new forum to augment the mailing lists and IRC channel(s) for the NTP Pool user and server operator community. Post questions about the NTP Pool, suggestions for improvements and topics related to time keepin… --- ## [NTP server from UberSDR receiving Shortwave timeservers with an RX888MK2 SDR-receiver](https://community.ntppool.org/t/ntp-server-from-ubersdr-receiving-shortwave-timeservers-with-an-rx888mk2-sdr-receiver/4734)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 6\ **Last updated:** [September 28, 2026, 3:44pm UTC](https://community.ntppool.org/t/ntp-server-from-ubersdr-receiving-shortwave-timeservers-with-an-rx888mk2-sdr-receiver/4734 "2026-09-28T15:44:08Z")
Hi all, I just saw that the maker of my websdr, UberSDR, has added a nice page about NTP connections it’s using. As it’s so nicey done, I wanted to show it with you all. Here it is: That is at my server, found here… --- ## [Application for vendor zone is still pending for 5 weeks](https://community.ntppool.org/t/application-for-vendor-zone-is-still-pending-for-5-weeks/1914)
**Author:** [@senec](https://community.ntppool.org/u/senec)\ **Replies:** 9\ **Last updated:** [June 8, 2026, 4:26pm UTC](https://community.ntppool.org/t/application-for-vendor-zone-is-still-pending-for-5-weeks/1914 "2026-06-08T16:26:20Z")
Hi, 5 weeks ago I made a vendor zone application, but its status is still pending. I sent some emails to ask@ntppool.org but didn’t get an answer. What can I do else to push my application? Best regards Peter --- ## [Truncated FQDN/addresses via 'chronyc sources'](https://community.ntppool.org/t/truncated-fqdn-addresses-via-chronyc-sources/4289)
**Author:** [@Mpegger](https://community.ntppool.org/u/Mpegger)\ **Replies:** 8\ **Last updated:** [May 29, 2026, 1:39am UTC](https://community.ntppool.org/t/truncated-fqdn-addresses-via-chronyc-sources/4289 "2026-05-29T01:39:14Z")
For the life of me I can’t find the answer to this, and I could have sworn it was possible, but when using a command like ‘chronyc sources’ if the FQDN or IPv6 address is too long to show in the column, it gets truncated… --- ## [Ubuntu / Canonical issues](https://community.ntppool.org/t/ubuntu-canonical-issues/4400)
**Author:** [@marco.davids](https://community.ntppool.org/u/marco.davids)\ **Replies:** 3\ **Last updated:** [May 5, 2026, 2:55pm UTC](https://community.ntppool.org/t/ubuntu-canonical-issues/4400 "2026-05-05T14:55:40Z")
As some of you may have noticed already; Ubuntu / Canonical is having some (DDoS related) issues lately: https://status.canonical.com/ Interestingly, their NTP servers are not on that status page. But they do have some… --- ## [No AAAA records returned](https://community.ntppool.org/t/no-aaaa-records-returned/4361)
**Author:** [@CrimPac](https://community.ntppool.org/u/CrimPac)\ **Replies:** 1\ **Last updated:** [April 23, 2026, 4:06pm UTC](https://community.ntppool.org/t/no-aaaa-records-returned/4361 "2026-04-23T16:06:43Z")
I have noticed a sharp drop off in IPv6 traffic on my servers and a few new servers I spun up are not getting any traffic. Doing a quick dig AAAA pool.ntp.org returns no IP addresses. Is this related to the recent issue… --- ## [Clarification on vendor zone plans for businesses](https://community.ntppool.org/t/clarification-on-vendor-zone-plans-for-businesses/4351)
**Author:** [@m.oudijk](https://community.ntppool.org/u/m.oudijk)\ **Replies:** 6\ **Last updated:** [April 20, 2026, 4:44pm UTC](https://community.ntppool.org/t/clarification-on-vendor-zone-plans-for-businesses/4351 "2026-04-20T16:44:35Z")
A couple months ago I registered a vendor zone for my employer but got stuck on selecting a plan. The business production plan looks most suitable but mentions “Configure DNS for up to 4 products”, which I am not sure ab… --- ## [Ubuntu will use ntpd-rs (and benchmark it against chrony)](https://community.ntppool.org/t/ubuntu-will-use-ntpd-rs-and-benchmark-it-against-chrony/4310)
**Author:** [@Wokkocher](https://community.ntppool.org/u/Wokkocher)\ **Replies:** 21\ **Last updated:** [April 13, 2026, 5:42pm UTC](https://community.ntppool.org/t/ubuntu-will-use-ntpd-rs-and-benchmark-it-against-chrony/4310 "2026-04-13T17:42:23Z")
Hi all, this is my first post in this community. I am running an little IPv6 openwrt router with chrony as time server on a low level traffic setting (I have no idea if its adress is linked to my profile). Now I read an … --- ## [How does one check if a specific IP is in the pool?](https://community.ntppool.org/t/how-does-one-check-if-a-specific-ip-is-in-the-pool/4327)
**Author:** [@Mpegger](https://community.ntppool.org/u/Mpegger)\ **Replies:** 3\ **Last updated:** [April 9, 2026, 4:59am UTC](https://community.ntppool.org/t/how-does-one-check-if-a-specific-ip-is-in-the-pool/4327 "2026-04-09T04:59:21Z")
Is there a link or way to check if a specific IP address is in the NTP pool? I’m trying to drill down on a possible firewall issue and need to verify if a IP address isn’t in the pool. --- ## [Summertime in Europe!](https://community.ntppool.org/t/summertime-in-europe/4309)
**Author:** [@marco.davids](https://community.ntppool.org/u/marco.davids)\ **Replies:** 7\ **Last updated:** [March 31, 2026, 4:41pm UTC](https://community.ntppool.org/t/summertime-in-europe/4309 "2026-03-31T16:41:41Z")
Happy summertime to all Europeans, and here’s a nice alphabetical clock to check the time: https://boat.horse/clock/index.html :innocent: --- ## [Monitoring and DNS services seems to have issues today ( 2026-03-01)](https://community.ntppool.org/t/monitoring-and-dns-services-seems-to-have-issues-today-2026-03-01/4259)
**Author:** [@canope](https://community.ntppool.org/u/canope)\ **Replies:** 48\ **Last updated:** [March 24, 2026, 9:44pm UTC](https://community.ntppool.org/t/monitoring-and-dns-services-seems-to-have-issues-today-2026-03-01/4259 "2026-03-24T21:44:35Z")
Hello Guys , Monitoring and DNS services appear to be experiencing issues today, but the reported status remains fully green. --- ## [NTS Pool experiments](https://community.ntppool.org/t/nts-pool-experiments/4147)
**Author:** [@davidv1992](https://community.ntppool.org/u/davidv1992)\ **Replies:** 28\ **Last updated:** [March 24, 2026, 3:52pm UTC](https://community.ntppool.org/t/nts-pool-experiments/4147 "2026-03-24T15:52:47Z")
Hey All, There currently is an effort going to experiment with pool constructions for NTS. For this purpose, we are running an experimental pool using one of the implementation techniques currently suggested to the IETF… --- ## [Marantz SR5015 AVR – firmware bug causing excessive NTP polling (every 20 seconds)](https://community.ntppool.org/t/marantz-sr5015-avr-firmware-bug-causing-excessive-ntp-polling-every-20-seconds/4283)
**Author:** [@torsten](https://community.ntppool.org/u/torsten)\ **Replies:** 8\ **Last updated:** [March 22, 2026, 2:41am UTC](https://community.ntppool.org/t/marantz-sr5015-avr-firmware-bug-causing-excessive-ntp-polling-every-20-seconds/4283 "2026-03-22T02:41:04Z")
Hi all, I wanted to report a firmware bug in the Marantz SR5015 AV receiver that’s hammering NTP infrastructure. After a recent firmware update, the device sends NTP-related DNS queries every 20 seconds – 10 requests p… --- ## [Problems with API for getting server scores](https://community.ntppool.org/t/problems-with-api-for-getting-server-scores/4292)
**Author:** [@ChrisJ](https://community.ntppool.org/u/ChrisJ)\ **Replies:** 2\ **Last updated:** [March 19, 2026, 8:34am UTC](https://community.ntppool.org/t/problems-with-api-for-getting-server-scores/4292 "2026-03-19T08:34:19Z")
I don;t know if this is related to the recent migration but for the last couple of days my automated mechanism to periodically check my server scores is not working: $ curl --connect-timeout 5 --max-time 10 -s ‘https://… --- ## [Paper: Measurement-Informed Understanding of the NTP Pool’s Robustness to Monopoly Attacks](https://community.ntppool.org/t/paper-measurement-informed-understanding-of-the-ntp-pool-s-robustness-to-monopoly-attacks/4247)
**Author:** [@Sebhoster](https://community.ntppool.org/u/Sebhoster)\ **Replies:** 13\ **Last updated:** [March 13, 2026, 3:02pm UTC](https://community.ntppool.org/t/paper-measurement-informed-understanding-of-the-ntp-pool-s-robustness-to-monopoly-attacks/4247 "2026-03-13T15:02:55Z")
A recently puplished paper with the title mentioned above was shared on the mailinglist of the IETF ntp workinggroup yesterday: https://arxiv.org/pdf/2602.12321 --- ## [The Pool pages are gone](https://community.ntppool.org/t/the-pool-pages-are-gone/4268)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 11\ **Last updated:** [March 9, 2026, 9:05pm UTC](https://community.ntppool.org/t/the-pool-pages-are-gone/4268 "2026-03-09T21:05:05Z")
@ask 503 Service Unavailable No server is available to handle this request. at https://www.ntppool.org/ --- ## [Looking for NTP stratum 1 servers in India](https://community.ntppool.org/t/looking-for-ntp-stratum-1-servers-in-india/4251)
**Author:** [@stevesommars](https://community.ntppool.org/u/stevesommars)\ **Replies:** 22\ **Last updated:** [March 5, 2026, 2:11pm UTC](https://community.ntppool.org/t/looking-for-ntp-stratum-1-servers-in-india/4251 "2026-03-05T14:11:40Z")
I’m looking for NTP stratum 1 servers in India for my stratum 2 pool server. NPL India is not reachable(unclear why). Most other stratum 1’s I find are too distant or are inaccurate. Any suggestions? --- ## [NTP not working](https://community.ntppool.org/t/ntp-not-working/4236)
**Author:** [@mb19](https://community.ntppool.org/u/mb19)\ **Replies:** 7\ **Last updated:** [February 11, 2026, 7:25am UTC](https://community.ntppool.org/t/ntp-not-working/4236 "2026-02-11T07:25:17Z")
Hello everyone, I’ve been trying to configure NTP on my OPNsense setup, but it’s not working. I have a double NAT setup. I contacted my ISP, and they confirmed they don’t block NTP traffic. In fact, if I connect a devic… --- ## [No\_sys\_peer, panic stop](https://community.ntppool.org/t/no-sys-peer-panic-stop/1509)
**Author:** [@greenberg.ed](https://community.ntppool.org/u/greenberg.ed)\ **Replies:** 4\ **Last updated:** [February 2, 2026, 8:28pm UTC](https://community.ntppool.org/t/no-sys-peer-panic-stop/1509 "2026-02-02T20:28:03Z")
Sorry to post a basic question here but I’m not sure where else to ask. Lately (twice, now) one of our servers has had the NTP daemon die. I get: Nov 25 19:58:29 replication\_server ntpd\[17559\]: 0.0.0.0 0618 08 no\_sys\_… --- ## [Shame, shame, shame on you!](https://community.ntppool.org/t/shame-shame-shame-on-you/4151)
**Author:** [@ebahapo](https://community.ntppool.org/u/ebahapo)\ **Replies:** 34\ **Last updated:** [January 12, 2026, 7:50pm UTC](https://community.ntppool.org/t/shame-shame-shame-on-you/4151 "2026-01-12T19:50:05Z")
There is ntp.org in the IPv6 wall of shame, to no one’s surprise: Why No IPv6? :upside\_down\_face: --- ## [Faster than a speeding photon](https://community.ntppool.org/t/faster-than-a-speeding-photon/4225)
**Author:** [@davehart](https://community.ntppool.org/u/davehart)\ **Replies:** 1\ **Last updated:** [January 11, 2026, 5:12pm UTC](https://community.ntppool.org/t/faster-than-a-speeding-photon/4225 "2026-01-11T17:12:50Z")
I’m seeing incredible latencies shown for various monitors for several of my pool servers on the US East coast, such as low 40s to multiple monitors in Russia, and about 70 msec to several Taiwan monitors. Those servers… --- ## [Wrong IPv6 geolocation for my NTP server](https://community.ntppool.org/t/wrong-ipv6-geolocation-for-my-ntp-server/4200)
**Author:** [@zhangyuan8087](https://community.ntppool.org/u/zhangyuan8087)\ **Replies:** 3\ **Last updated:** [December 30, 2025, 6:40pm UTC](https://community.ntppool.org/t/wrong-ipv6-geolocation-for-my-ntp-server/4200 "2025-12-30T18:40:20Z")
Wrong IPv6 geolocation for my NTP server My IPv6 address is: 240d:c000:f06f:9300:1068:7be8:80e8:0 It is currently detected as sg , but the server is physically located in Japan (Tokyo). Please update the GeoIP entry.… --- ## [NTP at NIST Boulder has lost power](https://community.ntppool.org/t/ntp-at-nist-boulder-has-lost-power/4192)
**Author:** [@marco.davids](https://community.ntppool.org/u/marco.davids)\ **Replies:** 6\ **Last updated:** [December 23, 2025, 4:15pm UTC](https://community.ntppool.org/t/ntp-at-nist-boulder-has-lost-power/4192 "2025-12-23T16:15:56Z")
Interesting read for the weekend: jeff.sherman@nist.gov: Dec 19 05:18PM -0800 Dear colleagues, In short, the atomic ensemble time scale at our Boulder campus has failed due to a prolonged utility power outage. One imp… --- ## [Sorry, Dutch....to enjoy....Google AI told Google that Google is stupid and want Google to F-O!](https://community.ntppool.org/t/sorry-dutch-to-enjoy-google-ai-told-google-that-google-is-stupid-and-want-google-to-f-o/4189)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 6\ **Last updated:** [December 19, 2025, 6:31pm UTC](https://community.ntppool.org/t/sorry-dutch-to-enjoy-google-ai-told-google-that-google-is-stupid-and-want-google-to-f-o/4189 "2025-12-19T18:31:06Z")
If somebody wants to translate it, I go on in Dutch: Gasten, ik ben een uur of 2 aan het chatten met Google AI…en dan gebeurt er dit… Om je dood te lachen. Google IA is Google zo zat als iets!!! En klaagt heel AI a… --- ## [Get more stability at no costs](https://community.ntppool.org/t/get-more-stability-at-no-costs/4160)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 51\ **Last updated:** [December 9, 2025, 10:29pm UTC](https://community.ntppool.org/t/get-more-stability-at-no-costs/4160 "2025-12-09T22:29:27Z")
@Mpegger , for you I have been playing with my J1900 CPU, that my timeserver (str1) use. It’s about the same as an RPi4 or better. I noticed a lot of swings. However the crystal is hopless, just like the Pi. So I wond… --- ## [World’s Most Stable Raspberry Pi? 81% Better NTP with Thermal Management](https://community.ntppool.org/t/world-s-most-stable-raspberry-pi-81-better-ntp-with-thermal-management/4150)
**Author:** [@grifferz](https://community.ntppool.org/u/grifferz)\ **Replies:** 17\ **Last updated:** [December 1, 2025, 5:48pm UTC](https://community.ntppool.org/t/world-s-most-stable-raspberry-pi-81-better-ntp-with-thermal-management/4150 "2025-12-01T17:48:57Z")
I thought this article was interesting: TL;DR: pin chrony to one CPU core, pin interrupts also to that core, busy-loop on the other cores to maintain a constant CPU temperature. “World’s Most Stable Raspberry Pi? 81% B… --- ## [Max offset for IPv6 is now much smaller](https://community.ntppool.org/t/max-offset-for-ipv6-is-now-much-smaller/214)
**Author:** [@HansMayer](https://community.ntppool.org/u/HansMayer)\ **Replies:** 9\ **Last updated:** [November 26, 2025, 6:27pm UTC](https://community.ntppool.org/t/max-offset-for-ipv6-is-now-much-smaller/214 "2025-11-26T18:27:53Z")
Dear Community, I realised that the maximum offset which is monitored is now much smaller since some days. This happens for all my IPv6 server but not for IPv4. ( Same server dual stack ) IPv6 server are now between … --- ## [Hosting companies kicking me out (hosting advice)](https://community.ntppool.org/t/hosting-companies-kicking-me-out-hosting-advice/4131)
**Author:** [@NTPclock](https://community.ntppool.org/u/NTPclock)\ **Replies:** 10\ **Last updated:** [November 16, 2025, 12:36pm UTC](https://community.ntppool.org/t/hosting-companies-kicking-me-out-hosting-advice/4131 "2025-11-16T12:36:06Z")
I had a few servers but vps hosting companies are kicking me out due to high queries i guess. Do you have a hosting (dedicated or vps) to host NTP? Thank you --- ## [More servers to high number of NTP server countries?](https://community.ntppool.org/t/more-servers-to-high-number-of-ntp-server-countries/4116)
**Author:** [@NTPclock](https://community.ntppool.org/u/NTPclock)\ **Replies:** 7\ **Last updated:** [November 15, 2025, 4:08pm UTC](https://community.ntppool.org/t/more-servers-to-high-number-of-ntp-server-countries/4116 "2025-11-15T16:08:11Z")
Do countries that already have a very high number of NTP servers still need more? In other words, is there any real benefit to running an NTP server in a country where the pool is already crowded? Thank you! --- ## [Ntpd-rs not touching system clock](https://community.ntppool.org/t/ntpd-rs-not-touching-system-clock/4138)
**Author:** [@magnemann](https://community.ntppool.org/u/magnemann)\ **Replies:** 5\ **Last updated:** [November 15, 2025, 11:47am UTC](https://community.ntppool.org/t/ntpd-rs-not-touching-system-clock/4138 "2025-11-15T11:47:04Z")
Is it possible to NOT let ntpd-rs touch system clock? I try to set up a nts server jo join this project. The server is a lxc container and should not mess with the system clock of the host. Right not the service fails t… [Next page](https://community.ntppool.org/c/uncategorized/1.md?page=1)