--- service: a.root-servers.net start-period: '2016-06-23T00:00:00Z' end-period: '2016-06-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4115532716 dns-udp-queries-received-ipv6: 476401196 dns-tcp-queries-received-ipv4: 67371260 dns-tcp-queries-received-ipv6: 9747202 dns-udp-responses-sent-ipv4: 4116257039 dns-udp-responses-sent-ipv6: 476438086 dns-tcp-responses-sent-ipv4: 55201421 dns-tcp-responses-sent-ipv6: 3605275