networking:ntp_pools
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| networking:ntp_pools [2021/03/10 04:10] – bstafford | networking:ntp_pools [2021/09/23 10:23] (current) – removed bstafford | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ====== Public NTP Servers ====== | ||
| - | |||
| - | **REMEMBER** : Do NOT use burst or iburst against public NTP servers unless they are announced they accept it (e.g. don't use it against *.ntp.org servers). More details [[networking: | ||
| - | |||
| - | * There is a dedicated page to [[networking: | ||
| - | * There is a dedicated page to [[infoblox: | ||
| - | |||
| - | ===== pool.ntp.org ===== | ||
| - | In most cases it's best to use pool.ntp.org to find an NTP server (or 0.pool.ntp.org, | ||
| - | |||
| - | The number of active service in the geographic regions can be found [[https:// | ||
| - | |||
| - | |||
| - | For the following list of NTP pools, you can use the following and/or prefix 0. or 1. or 2. or 3. to the FQDN | ||
| - | * pool.ntp.org | ||
| - | * africa.pool.ntp.org (54) | ||
| - | * asia.pool.ntp.org (282) | ||
| - | * europe.pool.ntp.org (2784) | ||
| - | * north-america.pool.ntp.org (934) | ||
| - | * oceania.pool.ntp.org (126) | ||
| - | * south-america.pool.ntp.org (58) | ||
| - | * <country code> | ||
| - | * < | ||
| - | |||
| - | |||
| - | ===== NTP Servers ===== | ||
| - | |||
| - | More specific are: | ||
| - | * ntp0.ja.net (Stratum 1) | ||
| - | * ntp1.npl.co.uk (Stratum 2) | ||
| - | * time.cloudflare.com (Stratum 3) | ||
| - | * | ||
| - | List of Stratum 1 servers | ||
| - | * [[http:// | ||
| - | * [[http:// | ||
| - | |||
| - | National Physics Laboratory hosts two public " | ||
| - | |||
| - | |||
| - | **DO NOT** configure your system to use Google Public NTP together with non-leap-smearing NTP servers. e.g. do not combine Google NTP with Cloudflare NTP as they [[https:// | ||
| - | |||
| - | ^Operator ^ Server FQDN ^ Server IP ^ Stratum ^ RefID ^ Source Type or FQDN ^ Delay ^ Location ^ Supports iBurst ^ | ||
| - | | Cloudflare | time.cloudflare.com | 162.159.200.1 | 3 | 10.21.8.19 | Internal Cloudflare? | 13.080 | UK | | | ||
| - | | Cloudflare | time.cloudflare.com | 162.159.200.123 | 3 | 10.21.8.19 | Internal Cloudflare? | 13.896 | UK | | | ||
| - | | Microsoft | time.windows.com | 51.145.123.29 | 3 | 25.66.230.5 | Internal Microsoft? | 13.896 | UK | | | ||
| - | | Zen Internet | ntp0.zen.co.uk | 212.23.8.6 | 2 | 195.66.241.3 | ntp1.linx.net | 11.642 | | | | ||
| - | | Zen Internet | ntp1.zen.co.uk | 212.23.10.129 | 2 | 85.199.214.99 | server1.quickdrivingtestcancellations.net | 16.948 | UK | | | ||
| - | | National Physics Laboratory | ntp1.npl.co.uk | 139.143.5.30 | 2 | 139.143.45.169 | ? | 16.457 | UK | | | ||
| - | | National Physics Laboratory | ntp2.npl.co.uk | 139.143.5.31 | 2 | 139.143.45.169 | ? | 17.329 | UK | | | ||
| - | | Manchester University | ntp2a.mcc.ac.uk | 130.88.202.49 | 2 | 193.62.22.66 | ntp0.ja.net | 22.581 | UK | | | ||
| - | | Manchester University | ntp2b.mcc.ac.uk | 130.88.203.13 | 2 | 130.88.203.13 | ntp0.ja.net | 22.282 | UK | | | ||
| - | | Manchester University | ntp2c.mcc.ac.uk | 130.88.200.6 | 2 | 193.62.22.66 | ntp0.ja.net | 22.135 | UK | | | ||
| - | | Manchester University | ntp2d.mcc.ac.uk | 130.88.212.143 | 2 | 193.62.22.74 | ntp1.ja.net | 22.771 | UK | | | ||
| - | | JANET, Harwell | ntp0.ja.net | 193.62.22.66 | 1 | .MSF. | MSF Radio Clock Receiver | 15.981 | UK | | | ||
| - | | JANET, Harwell | ntp1.ja.net | 193.62.22.74 | 1 | .MRS. | N/A | 26.042 | UK | | | ||
| - | | JANET, Harwell | ntp2.ja.net | 193.62.22.98 | 2 | 193.62.22.74 | ntp1.ja.net | 22.849 | UK | | | ||
| - | | JANET, Harwell | ntp3.ja.net | 193.62.22.90 | 1 | .PPS. | N/A | 26.305 | UK | | | ||
| - | | JANET, Harwell | ntp4.ja.net | 193.62.22.82 | 1 | .DCFa. | DCF77 | 17.528 | UK | | | ||
| - | | Google | time.google.com | time1-time4 | ||
| - | | Google | time1.google.com | 216.239.35.0 | ||
| - | | Google | time2.google.com | 216.239.35.4 | 1 | .GOOG. | N/A | 20.399 | | Yes | | ||
| - | | Google | time3.google.com | 216.239.35.8 | 1 | .GOOG. | N/A | 20.514 | | Yes | | ||
| - | | Google | time4.google.com | 216.239.35.12 | 1 | .GOOG. | N/A | 22.899 | | Yes | | ||
| - | | Facebook | time.facebook.com | time1-time5 | ||
| - | | Facebook | time1.facebook.com | 129.134.28.123 | 1 | .FB... | N/A | 25.595 | | Yes | | ||
| - | | Facebook | time2.facebook.com | 129.134.29.123 | 1 | .FB... | N/A | 16.803 | | Yes | | ||
| - | | Facebook | time3.facebook.com | 129.134.25.123 | 1 | .FB... | N/A | 12.037 | | Yes | | ||
| - | | Facebook | time4.facebook.com | 129.134.26.123 | 1 | .FB... | N/A | 18.341 | | Yes | | ||
| - | | Facebook | time5.facebook.com | 129.134.27.123 | 1 | .FB... | N/A | 16.546 | | Yes | | ||
| - | | Apple | time.apple.com | 17.253.108.253 (and others) | ||
| - | | Apple | time.euro.apple.com | 17.253.34.125 (and others) | 1 | .SHM. | | 9.889 | | Yes | | ||
| - | | Leo Bodnar Electronics | ntp1.leontp.com | 51.155.16.62 | 1 | .GPS. | N/A | 36.932 | UK | | | ||
| - | | Leo Bodnar Electronics | ntp5.leontp.com | 85.199.214.98 | 1 | .GPS. | N/A | 16.523 | UK | | | ||
| - | | Leo Bodnar Electronics | ntp6.leontp.com | 85.199.214.99 | ||
| - | | Leo Bodnar Electronics | ntp7.leontp.com | 85.199.214.100 | 1 | .GPS. | N/A | 16.002 | UK | | | ||
| - | | Leo Bodnar Electronics | ntp8.leontp.com | 85.199.214.101 | 1 | .GPS. | N/A | 16.595 | UK | | | ||
| - | | Leo Bodnar Electronics | ntp9.leontp.com | 85.199.214.102 | 1 | .GPS. | N/A | 15.965 | UK | | | ||
| - | | Xentex IT Solutions | ntp.xtx.cloud | 81.133.66.177 | 1 | .PPS. | N/A | 24.301 | UK | | | ||
| - | |||
| - | |||
| - | More information on Google' | ||
| - | |||
| - | Google uses its own NTP servers (see above) for its public DNS servers (see below). If you cannot configure multiple servers, '' | ||
| - | |||
networking/ntp_pools.1615349411.txt.gz · Last modified: (external edit)