Recently I’ve been checking the DNS records of the us.pool.ntp.org address and realized that one of my servers (with netspeed at full speed) constantly appears as record A on various DNS servers in North America.
However, I have a secondary server also located in the USA, but with netspeed at 25Mb/s. This server receives about 300 requests per second, and even after performing multiple checks on the us.pool.ntp.org and noth-america.pool.ntp.org domain, DNS servers have never returned the IP from that particular server.
This leads me to believe, that depending on the netspeed set, the server IP is not included in the regional pool rotation list. If NTP traffic is not coming from the us and north america pool, in which pool domain is this server being distributed?