--- service: i.root-servers.net start-period: '2015-08-26T00:00:00Z' end-period: '2015-08-27T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4258120184 dns-udp-queries-received-ipv6: 274542774 dns-tcp-queries-received-ipv4: 32331035 dns-tcp-queries-received-ipv6: 376045 dns-udp-responses-sent-ipv4: 5333635338 dns-udp-responses-sent-ipv6: 274537675 dns-tcp-responses-sent-ipv4: 32403995 dns-tcp-responses-sent-ipv6: 378989