--- service: a.root-servers.net start-period: '2016-12-14T00:00:00Z' end-period: '2016-12-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5453663593 dns-udp-queries-received-ipv6: 523289509 dns-tcp-queries-received-ipv4: 234245677 dns-tcp-queries-received-ipv6: 8443520 dns-udp-responses-sent-ipv4: 5396372448 dns-udp-responses-sent-ipv6: 522609934 dns-tcp-responses-sent-ipv4: 234575407 dns-tcp-responses-sent-ipv6: 8491308