--- service: i.root-servers.net start-period: '2013-06-02T00:00:00Z' end-period: '2013-06-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1789648414 dns-udp-queries-received-ipv6: 95162827 dns-tcp-queries-received-ipv4: 3007663 dns-tcp-queries-received-ipv6: 124512 dns-udp-responses-sent-ipv4: 1790273812 dns-udp-responses-sent-ipv6: 102697506 dns-tcp-responses-sent-ipv4: 3077757 dns-tcp-responses-sent-ipv6: 124581