--- service: a.root-servers.net start-period: '2016-08-20T00:00:00Z' end-period: '2016-08-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3241038073 dns-udp-queries-received-ipv6: 449772927 dns-tcp-queries-received-ipv4: 49661800 dns-tcp-queries-received-ipv6: 5433028 dns-udp-responses-sent-ipv4: 3231679717 dns-udp-responses-sent-ipv6: 449717778 dns-tcp-responses-sent-ipv4: 47834713 dns-tcp-responses-sent-ipv6: 3898437