--- service: i.root-servers.net start-period: '2015-10-02T00:00:00Z' end-period: '2015-10-03T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4202636487 dns-udp-queries-received-ipv6: 307037449 dns-tcp-queries-received-ipv4: 27387276 dns-tcp-queries-received-ipv6: 438436 dns-udp-responses-sent-ipv4: 4132612225 dns-udp-responses-sent-ipv6: 305663091 dns-tcp-responses-sent-ipv4: 27411495 dns-tcp-responses-sent-ipv6: 440198