## Google Public NTP [AS15169]: **time.google.com** ## Cloudflare NTP **time.cloudflare.com** [Introducing time.cloudflare.com](https://blog.cloudflare.com/secure-time/) ## Facebook NTP [AS32934]: **time.facebook.com** ## Microsoft NTP server [AS8075]: **time.windows.com** ## Apple NTP server [AS714, AS6185]: **time.apple.com** ## NIST Internet Time Service (ITS) [AS49, AS104]: **time.nist.gov** [NIST Internet Time Service (ITS) | NIST](https://www.nist.gov/pml/time-and-frequency-division/time-distribution/internet-time-service-its) [NIST Internet Time Servers](https://tf.nist.gov/tf-cgi/servers.cgi) ## NTP Pool: **pool.ntp.org**