--- service: a.root-servers.net start-period: '2016-01-10T00:00:00Z' end-period: '2016-01-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4179048753 dns-udp-queries-received-ipv6: 301397158 dns-tcp-queries-received-ipv4: 51579828 dns-tcp-queries-received-ipv6: 2069053 dns-udp-responses-sent-ipv4: 4172220968 dns-udp-responses-sent-ipv6: 300891914 dns-tcp-responses-sent-ipv4: 43727980 dns-tcp-responses-sent-ipv6: 253505