--- service: i.root-servers.net start-period: '2013-08-16T00:00:00Z' end-period: '2013-08-17T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2124310787 dns-udp-queries-received-ipv6: 146211251 dns-tcp-queries-received-ipv4: 4318179 dns-tcp-queries-received-ipv6: 169433 dns-udp-responses-sent-ipv4: 2082364884 dns-udp-responses-sent-ipv6: 146174531 dns-tcp-responses-sent-ipv4: 4305423 dns-tcp-responses-sent-ipv6: 172263