--- service: i.root-servers.net start-period: '2013-06-24T00:00:00Z' end-period: '2013-06-25T00:00:27Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2041525280 dns-udp-queries-received-ipv6: 109846876 dns-tcp-queries-received-ipv4: 3494591 dns-tcp-queries-received-ipv6: 139073 dns-udp-responses-sent-ipv4: 2053853711 dns-udp-responses-sent-ipv6: 116909193 dns-tcp-responses-sent-ipv4: 3632497 dns-tcp-responses-sent-ipv6: 143204