--- service: i.root-servers.net start-period: '2016-04-02T00:00:00Z' end-period: '2016-04-03T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4823404131 dns-udp-queries-received-ipv6: 398733258 dns-tcp-queries-received-ipv4: 22480859 dns-tcp-queries-received-ipv6: 809736 dns-udp-responses-sent-ipv4: 4737244388 dns-udp-responses-sent-ipv6: 398313980 dns-tcp-responses-sent-ipv4: 21767375 dns-tcp-responses-sent-ipv6: 815547