--- service: i.root-servers.net start-period: '2014-07-28T00:00:00Z' end-period: '2014-07-29T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3011379890 dns-udp-queries-received-ipv6: 248312791 dns-tcp-queries-received-ipv4: 6342777 dns-tcp-queries-received-ipv6: 263875 dns-udp-responses-sent-ipv4: 2955323656 dns-udp-responses-sent-ipv6: 248196876 dns-tcp-responses-sent-ipv4: 6257593 dns-tcp-responses-sent-ipv6: 266747