--- service: i.root-servers.net start-period: '2015-08-08T00:00:00Z' end-period: '2015-08-09T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4900787269 dns-udp-queries-received-ipv6: 242922120 dns-tcp-queries-received-ipv4: 16035613 dns-tcp-queries-received-ipv6: 284238 dns-udp-responses-sent-ipv4: 4857427634 dns-udp-responses-sent-ipv6: 244841752 dns-tcp-responses-sent-ipv4: 15941025 dns-tcp-responses-sent-ipv6: 292331