--- service: a.root-servers.net start-period: '2017-01-02T00:00:00Z' end-period: '2017-01-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4380251188 dns-udp-queries-received-ipv6: 469848250 dns-tcp-queries-received-ipv4: 174759431 dns-tcp-queries-received-ipv6: 7711241 dns-udp-responses-sent-ipv4: 4378185791 dns-udp-responses-sent-ipv6: 469522752 dns-tcp-responses-sent-ipv4: 175660925 dns-tcp-responses-sent-ipv6: 7728848