--- service: j.root-servers.net start-period: '2015-09-12T00:00:00Z' end-period: '2015-09-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4731383061 dns-udp-queries-received-ipv6: 267118763 dns-tcp-queries-received-ipv4: 67528895 dns-tcp-queries-received-ipv6: 19151247 dns-udp-responses-sent-ipv4: 3607613439 dns-udp-responses-sent-ipv6: 266638706 dns-tcp-responses-sent-ipv4: 65360499 dns-tcp-responses-sent-ipv6: 17459573