--- service: j.root-servers.net start-period: '2014-05-21T00:00:00Z' end-period: '2014-05-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3187011267 dns-udp-queries-received-ipv6: 246782710 dns-tcp-queries-received-ipv4: 25109972 dns-tcp-queries-received-ipv6: 3910770 dns-udp-responses-sent-ipv4: 3184618647 dns-udp-responses-sent-ipv6: 246557507 dns-tcp-responses-sent-ipv4: 24079207 dns-tcp-responses-sent-ipv6: 495084