--- service: a.root-servers.net start-period: '2015-09-02T00:00:00Z' end-period: '2015-09-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5056080871 dns-udp-queries-received-ipv6: 277486336 dns-tcp-queries-received-ipv4: 21038004 dns-tcp-queries-received-ipv6: 8512613 dns-udp-responses-sent-ipv4: 5081867522 dns-udp-responses-sent-ipv6: 280113679 dns-tcp-responses-sent-ipv4: 18090535 dns-tcp-responses-sent-ipv6: 6571019