--- service: a.root-servers.net start-period: '2016-02-13T00:00:00Z' end-period: '2016-02-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4691671592 dns-udp-queries-received-ipv6: 335863327 dns-tcp-queries-received-ipv4: 68951434 dns-tcp-queries-received-ipv6: 1779838 dns-udp-responses-sent-ipv4: 4688172620 dns-udp-responses-sent-ipv6: 335511932 dns-tcp-responses-sent-ipv4: 60104200 dns-tcp-responses-sent-ipv6: 284391