--- service: j.root-servers.net start-period: '2015-06-20T00:00:00Z' end-period: '2015-06-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2610686790 dns-udp-queries-received-ipv6: 232841007 dns-tcp-queries-received-ipv4: 25667871 dns-tcp-queries-received-ipv6: 16730097 dns-udp-responses-sent-ipv4: 2539920007 dns-udp-responses-sent-ipv6: 232746746 dns-tcp-responses-sent-ipv4: 25006026 dns-tcp-responses-sent-ipv6: 15838305