--- service: a.root-servers.net start-period: '2016-09-04T00:00:00Z' end-period: '2016-09-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4280629802 dns-udp-queries-received-ipv6: 452821172 dns-tcp-queries-received-ipv4: 108767532 dns-tcp-queries-received-ipv6: 5753120 dns-udp-responses-sent-ipv4: 4275174995 dns-udp-responses-sent-ipv6: 452600174 dns-tcp-responses-sent-ipv4: 108595773 dns-tcp-responses-sent-ipv6: 4150036