--- service: a.root-servers.net start-period: '2016-01-07T00:00:00Z' end-period: '2016-01-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5179037821 dns-udp-queries-received-ipv6: 329351465 dns-tcp-queries-received-ipv4: 70171539 dns-tcp-queries-received-ipv6: 2052017 dns-udp-responses-sent-ipv4: 5173545966 dns-udp-responses-sent-ipv6: 329901982 dns-tcp-responses-sent-ipv4: 59927449 dns-tcp-responses-sent-ipv6: 264974