--- service: a.root-servers.net start-period: '2016-07-07T00:00:00Z' end-period: '2016-07-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4511802239 dns-udp-queries-received-ipv6: 519780145 dns-tcp-queries-received-ipv4: 73190597 dns-tcp-queries-received-ipv6: 7505757 dns-udp-responses-sent-ipv4: 4553071137 dns-udp-responses-sent-ipv6: 519747035 dns-tcp-responses-sent-ipv4: 60573593 dns-tcp-responses-sent-ipv6: 319881