--- service: a.root-servers.net start-period: '2017-02-16T00:00:00Z' end-period: '2017-02-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4898319667 dns-udp-queries-received-ipv6: 491760645 dns-tcp-queries-received-ipv4: 185960124 dns-tcp-queries-received-ipv6: 8715584 dns-udp-responses-sent-ipv4: 4893970030 dns-udp-responses-sent-ipv6: 491601620 dns-tcp-responses-sent-ipv4: 186513191 dns-tcp-responses-sent-ipv6: 8719427