--- service: a.root-servers.net start-period: '2016-04-02T00:00:00Z' end-period: '2016-04-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5198512833 dns-udp-queries-received-ipv6: 318684604 dns-tcp-queries-received-ipv4: 82197519 dns-tcp-queries-received-ipv6: 2816901 dns-udp-responses-sent-ipv4: 5690217788 dns-udp-responses-sent-ipv6: 319489663 dns-tcp-responses-sent-ipv4: 64455475 dns-tcp-responses-sent-ipv6: 272932