--- service: i.root-servers.net start-period: '2015-07-10T00:00:00Z' end-period: '2015-07-11T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4077612875 dns-udp-queries-received-ipv6: 242957933 dns-tcp-queries-received-ipv4: 10493127 dns-tcp-queries-received-ipv6: 269779 dns-udp-responses-sent-ipv4: 4032093505 dns-udp-responses-sent-ipv6: 247647280 dns-tcp-responses-sent-ipv4: 10418142 dns-tcp-responses-sent-ipv6: 271585