--- service: i.root-servers.net start-period: '2014-08-18T00:00:00Z' end-period: '2014-08-19T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3021144168 dns-udp-queries-received-ipv6: 218134637 dns-tcp-queries-received-ipv4: 7225475 dns-tcp-queries-received-ipv6: 259594 dns-udp-responses-sent-ipv4: 2965288518 dns-udp-responses-sent-ipv6: 218527293 dns-tcp-responses-sent-ipv4: 6743513 dns-tcp-responses-sent-ipv6: 262665