--- service: j.root-servers.net start-period: '2015-03-19T00:00:00Z' end-period: '2015-03-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3480232705 dns-udp-queries-received-ipv6: 344512121 dns-tcp-queries-received-ipv4: 27205094 dns-tcp-queries-received-ipv6: 5799745 dns-udp-responses-sent-ipv4: 3492584021 dns-udp-responses-sent-ipv6: 344348073 dns-tcp-responses-sent-ipv4: 26977171 dns-tcp-responses-sent-ipv6: 4467604