--- service: j.root-servers.net start-period: '2015-07-20T00:00:00Z' end-period: '2015-07-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3132834512 dns-udp-queries-received-ipv6: 323020356 dns-tcp-queries-received-ipv4: 33514014 dns-tcp-queries-received-ipv6: 26604756 dns-udp-responses-sent-ipv4: 3060691354 dns-udp-responses-sent-ipv6: 322869746 dns-tcp-responses-sent-ipv4: 32645599 dns-tcp-responses-sent-ipv6: 22126348