--- service: a.root-servers.net start-period: '2016-09-13T00:00:00Z' end-period: '2016-09-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5071052710 dns-udp-queries-received-ipv6: 518187795 dns-tcp-queries-received-ipv4: 118238040 dns-tcp-queries-received-ipv6: 5949182 dns-udp-responses-sent-ipv4: 5066229711 dns-udp-responses-sent-ipv6: 518079373 dns-tcp-responses-sent-ipv4: 112442710 dns-tcp-responses-sent-ipv6: 4523718