--- service: i.root-servers.net start-period: '2014-01-05T00:00:00Z' end-period: '2014-01-06T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2222390588 dns-udp-queries-received-ipv6: 139490626 dns-tcp-queries-received-ipv4: 4840042 dns-tcp-queries-received-ipv6: 252254 dns-udp-responses-sent-ipv4: 2175638144 dns-udp-responses-sent-ipv6: 139652322 dns-tcp-responses-sent-ipv4: 4851049 dns-tcp-responses-sent-ipv6: 255340