--- service: a.root-servers.net start-period: '2017-01-30T00:00:00Z' end-period: '2017-01-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4444639398 dns-udp-queries-received-ipv6: 467967109 dns-tcp-queries-received-ipv4: 140696382 dns-tcp-queries-received-ipv6: 7885496 dns-udp-responses-sent-ipv4: 4439296305 dns-udp-responses-sent-ipv6: 467801298 dns-tcp-responses-sent-ipv4: 141179743 dns-tcp-responses-sent-ipv6: 7876838