--- service: i.root-servers.net start-period: '2014-01-03T00:00:00Z' end-period: '2014-01-04T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2397257107 dns-udp-queries-received-ipv6: 144866088 dns-tcp-queries-received-ipv4: 4854377 dns-tcp-queries-received-ipv6: 251561 dns-udp-responses-sent-ipv4: 2342091512 dns-udp-responses-sent-ipv6: 145025472 dns-tcp-responses-sent-ipv4: 4885115 dns-tcp-responses-sent-ipv6: 254931