--- service: a.root-servers.net start-period: '2016-07-02T00:00:00Z' end-period: '2016-07-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4076278312 dns-udp-queries-received-ipv6: 421494590 dns-tcp-queries-received-ipv4: 68163260 dns-tcp-queries-received-ipv6: 6078167 dns-udp-responses-sent-ipv4: 4075774326 dns-udp-responses-sent-ipv6: 421454479 dns-tcp-responses-sent-ipv4: 56500249 dns-tcp-responses-sent-ipv6: 314880