--- service: i.root-servers.net start-period: '2015-08-09T00:00:00Z' end-period: '2015-08-10T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4841059993 dns-udp-queries-received-ipv6: 242289945 dns-tcp-queries-received-ipv4: 19464901 dns-tcp-queries-received-ipv6: 298427 dns-udp-responses-sent-ipv4: 4798721051 dns-udp-responses-sent-ipv6: 244215328 dns-tcp-responses-sent-ipv4: 19385839 dns-tcp-responses-sent-ipv6: 305794