--- service: a.root-servers.net start-period: '2017-02-08T00:00:00Z' end-period: '2017-02-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4817715135 dns-udp-queries-received-ipv6: 496733869 dns-tcp-queries-received-ipv4: 157190729 dns-tcp-queries-received-ipv6: 7871382 dns-udp-responses-sent-ipv4: 4811855503 dns-udp-responses-sent-ipv6: 496596491 dns-tcp-responses-sent-ipv4: 158027564 dns-tcp-responses-sent-ipv6: 7895088