ROBTEX.COM - exercise-difficulty

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exercise-difficulty checked at 2025-12-23T18:33:22.857Z 258ms 10/10/10 100% R:3 allDone:true timedOut:false

`exercise-difficulty`

`(root)`

	NS	`a.root-servers.net`
	NS	`b.root-servers.net`
	NS	`c.root-servers.net`
	NS	`d.root-servers.net`
	NS	`e.root-servers.net`
	NS	`f.root-servers.net`
	NS	`g.root-servers.net`
	NS	`h.root-servers.net`
	NS	`i.root-servers.net`
	NS	`j.root-servers.net`
	NS	`k.root-servers.net`
	NS	`l.root-servers.net`
	NS	`m.root-servers.net`