--- service: a.root-servers.net start-period: '2017-02-04T00:00:00Z' end-period: '2017-02-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4506929674 dns-udp-queries-received-ipv6: 468730905 dns-tcp-queries-received-ipv4: 149765212 dns-tcp-queries-received-ipv6: 7925851 dns-udp-responses-sent-ipv4: 4502557770 dns-udp-responses-sent-ipv6: 468612382 dns-tcp-responses-sent-ipv4: 150631959 dns-tcp-responses-sent-ipv6: 7947838