--- service: a.root-servers.net start-period: '2017-03-04T00:00:00Z' end-period: '2017-03-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4189412770 dns-udp-queries-received-ipv6: 467779523 dns-tcp-queries-received-ipv4: 180915387 dns-tcp-queries-received-ipv6: 7687602 dns-udp-responses-sent-ipv4: 4186090959 dns-udp-responses-sent-ipv6: 467304097 dns-tcp-responses-sent-ipv4: 181452820 dns-tcp-responses-sent-ipv6: 7800628