--- service: a.root-servers.net start-period: '2015-08-01T00:00:00Z' end-period: '2015-08-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4210378271 dns-udp-queries-received-ipv6: 246219542 dns-tcp-queries-received-ipv4: 17731505 dns-tcp-queries-received-ipv6: 9581685 dns-udp-responses-sent-ipv4: 4236188370 dns-udp-responses-sent-ipv6: 248501511 dns-tcp-responses-sent-ipv4: 14990054 dns-tcp-responses-sent-ipv6: 8141106