--- service: i.root-servers.net start-period: '2014-06-22T00:00:00Z' end-period: '2014-06-23T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2416773522 dns-udp-queries-received-ipv6: 228133331 dns-tcp-queries-received-ipv4: 6032857 dns-tcp-queries-received-ipv6: 236209 dns-udp-responses-sent-ipv4: 2370010593 dns-udp-responses-sent-ipv6: 229878857 dns-tcp-responses-sent-ipv4: 6293594 dns-tcp-responses-sent-ipv6: 239992