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> It would be great to see Google or Cloudflare use their infrastructure to provide anycasted NTP IP addresses.

They do. Cloudflare does anyway. time.cloudflare.com is backed by a set of anycasted IPs covering around 275 POPs.

That's great! But I'd want to see it documented - I searched but couldn't find IP addresses, only the domain.

For me time.cloudflare.com = 162.159.200.123

The great thing about anycast is the IPs are the same for everyone, it’s just which POP routing converges on that is different. DNS and anycast are combined primarily for load balancing and failover. Anyone can get and use the IPs directly with dig.

Right, but unless it's documented how do you know that the DNS entry won't change? They could change infra so it's DNS load-balanced instead of anycast and still at time.cloudflare.com

It wasn't clear but I provided the IP so others could validate it's the same for them and (in the future) that it hasn't changed.

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