--- service: j.root-servers.net start-period: '2015-07-01T00:00:00Z' end-period: '2015-07-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3192432330 dns-udp-queries-received-ipv6: 258703453 dns-tcp-queries-received-ipv4: 29692339 dns-tcp-queries-received-ipv6: 18203236 dns-udp-responses-sent-ipv4: 3127934429 dns-udp-responses-sent-ipv6: 258598111 dns-tcp-responses-sent-ipv4: 29104431 dns-tcp-responses-sent-ipv6: 16154094