--- service: a.root-servers.net start-period: '2015-07-02T00:00:00Z' end-period: '2015-07-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2956870711 dns-udp-queries-received-ipv6: 280417020 dns-tcp-queries-received-ipv4: 18796101 dns-tcp-queries-received-ipv6: 10013020 dns-udp-responses-sent-ipv4: 2980533779 dns-udp-responses-sent-ipv6: 282126039 dns-tcp-responses-sent-ipv4: 16170924 dns-tcp-responses-sent-ipv6: 8491095