--- service: a.root-servers.net start-period: '2016-09-12T00:00:00Z' end-period: '2016-09-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4795766433 dns-udp-queries-received-ipv6: 489049535 dns-tcp-queries-received-ipv4: 115765869 dns-tcp-queries-received-ipv6: 5813457 dns-udp-responses-sent-ipv4: 4788348705 dns-udp-responses-sent-ipv6: 489002932 dns-tcp-responses-sent-ipv4: 109778152 dns-tcp-responses-sent-ipv6: 4451829