--- service: j.root-servers.net start-period: '2015-07-28T00:00:00Z' end-period: '2015-07-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4454004570 dns-udp-queries-received-ipv6: 304582234 dns-tcp-queries-received-ipv4: 36459008 dns-tcp-queries-received-ipv6: 24787557 dns-udp-responses-sent-ipv4: 3753345159 dns-udp-responses-sent-ipv6: 305105618 dns-tcp-responses-sent-ipv4: 35908076 dns-tcp-responses-sent-ipv6: 25349051