--- service: a.root-servers.net start-period: '2016-09-23T00:00:00Z' end-period: '2016-09-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4334477215 dns-udp-queries-received-ipv6: 406077498 dns-tcp-queries-received-ipv4: 114636057 dns-tcp-queries-received-ipv6: 5161410 dns-udp-responses-sent-ipv4: 4327773747 dns-udp-responses-sent-ipv6: 406025905 dns-tcp-responses-sent-ipv4: 116112091 dns-tcp-responses-sent-ipv6: 5227911