--- service: a.root-servers.net start-period: '2016-09-09T00:00:00Z' end-period: '2016-09-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4703037558 dns-udp-queries-received-ipv6: 487325194 dns-tcp-queries-received-ipv4: 115359294 dns-tcp-queries-received-ipv6: 5748700 dns-udp-responses-sent-ipv4: 4698584236 dns-udp-responses-sent-ipv6: 487259112 dns-tcp-responses-sent-ipv4: 110517560 dns-tcp-responses-sent-ipv6: 4326491