--- service: a.root-servers.net start-period: '2017-01-08T00:00:00Z' end-period: '2017-01-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4206383731 dns-udp-queries-received-ipv6: 455818354 dns-tcp-queries-received-ipv4: 151381665 dns-tcp-queries-received-ipv6: 6997843 dns-udp-responses-sent-ipv4: 4310382493 dns-udp-responses-sent-ipv6: 455673304 dns-tcp-responses-sent-ipv4: 152587678 dns-tcp-responses-sent-ipv6: 7025700