--- service: a.root-servers.net start-period: '2016-06-22T00:00:00Z' end-period: '2016-06-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4427095738 dns-udp-queries-received-ipv6: 494813776 dns-tcp-queries-received-ipv4: 71595861 dns-tcp-queries-received-ipv6: 8828323 dns-udp-responses-sent-ipv4: 4427294710 dns-udp-responses-sent-ipv6: 495063092 dns-tcp-responses-sent-ipv4: 59951712 dns-tcp-responses-sent-ipv6: 2526600