--- service: i.root-servers.net start-period: '2015-07-04T00:00:00Z' end-period: '2015-07-05T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6018785170 dns-udp-queries-received-ipv6: 327159911 dns-tcp-queries-received-ipv4: 20509998 dns-tcp-queries-received-ipv6: 706137 dns-udp-responses-sent-ipv4: 5990910284 dns-udp-responses-sent-ipv6: 327063389 dns-tcp-responses-sent-ipv4: 19770086 dns-tcp-responses-sent-ipv6: 697608