--- service: a.root-servers.net start-period: '2016-09-17T00:00:00Z' end-period: '2016-09-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4077952499 dns-udp-queries-received-ipv6: 421624202 dns-tcp-queries-received-ipv4: 107453129 dns-tcp-queries-received-ipv6: 5666898 dns-udp-responses-sent-ipv4: 4073371787 dns-udp-responses-sent-ipv6: 421565216 dns-tcp-responses-sent-ipv4: 101429613 dns-tcp-responses-sent-ipv6: 4298598