krisarmstrong / Top_Public_Time_Servers.md

Last active December 22, 2025 17:19 — forked from mutin-sa/Top_Public_Time_Servers.md

List of Top Public Time Servers

NTP Servers Master List (Zero Data Loss)

Best Practices for Using NTP

Use multiple servers: Always configure at least 3–4 servers from different providers to avoid single points of failure.
Mix vendors & geographies: Don’t rely solely on one provider (e.g., all Google or all NIST). Spread across commercial, academic, and public pools.
Prefer Anycast where possible: For global reach, use pool.ntp.org, time.google.com, ntp.se, etc. These automatically route you to the nearest healthy server.
Favor stratum 1/2 servers: Stratum 1 servers are closest to the reference clock; stratum 2 are usually fine and often less overloaded.
Regional selection: Pick servers close to your geography (e.g., europe.pool.ntp.org in Europe, north-america.pool.ntp.org in North America).
Fallbacks: Include a mix of pool.ntp.org and vendor-specific (Google, Cloudflare, Microsoft) for redundancy.

besmirzanaj / ntp_servers.md

Last active December 23, 2025 16:41

some Official Government NTP stratum 1&2 servers

List of Official Stratum 1-2 public Time Dissemination Service over NTP

This list is generated from BIPM - International Bureau of Weights and Measures

more information - https://www.bipm.org/en/about-us.

I will list only publicly avaialable servers, not the ones that require you to have prior requests for access (eg. Australia).

Time Dissemination service is documented here as of April 2024

rail01 / Public_Polish_NTP_Servers.md

Last active May 7, 2025 08:00

List of publickly accessible NTP time servers in Poland

Below is the list of publickly accessible NTP time servers located in Poland, along with their hostnames, IP addresses, Stratum levels, AS numbers and contact information.

List consists of trustworthy sources such as government agencies, scientific organizations, ISPs or major infrastructure providers. STRATUM 1 and 2.

If you're looking to use any of those NTP servers in business-critical production environment, please consider obtaining time from a time source directly, e.g. via GPS receiver or caesium atomic clock.

List

Host organization	Hostname(s)	IPv4	IPv6	STRATUM	ASN	Contact information
Główny Urząd Miar (Central Office of Measures)	`tempus1.gum.gov.pl` `tempus2.gum.gov.pl`	`194.146.251.100` `194.146.251.101`	N/A	1	AS50606	time@gum.gov.pl

mutin-sa / Top_Public_Time_Servers.md

Last active December 23, 2025 05:35

List of Top Public Time Servers

Google Public NTP [AS15169]:

time.google.com

time1.google.com

time2.google.com

time3.google.com

mutin-sa / Top_Public_Recursive_Name_Servers.md

Last active December 27, 2025 18:35

List of Top Public Recursive Name Servers

DNS:

IPv4 Addr	IPv6 Addr	ASn	Political Region	Loc	Svc	Org
8.8.8.8	2001:4860:4860::8888	AS15169	US	Worldwide (Anycast)	Google Public DNS	Google
8.8.4.4	2001:4860:4860::8844	AS15169	US	Worldwide (Anycast)	Google Public DNS	Google
1.1.1.1	2606:4700:4700::1111	AS13335	US	Worldwide (Anycast)	Cloudflare-DNS	Cloudflare/APNIC
1.0.0.1	2606:4700:4700::1001	AS13335	US	Worldwide (Anycast)	Cloudflare-DNS	Cloudflare/APNIC
95.85.95.85	2a03:90c0:999d::1	AS199524	EU	*W

TheteSigma