--- service: a.root-servers.net start-period: '2017-01-23T00:00:00Z' end-period: '2017-01-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4730678582 dns-udp-queries-received-ipv6: 480431054 dns-tcp-queries-received-ipv4: 147551315 dns-tcp-queries-received-ipv6: 8435140 dns-udp-responses-sent-ipv4: 4727432603 dns-udp-responses-sent-ipv6: 480285450 dns-tcp-responses-sent-ipv4: 148123172 dns-tcp-responses-sent-ipv6: 8452810