--- service: i.root-servers.net start-period: '2015-10-03T00:00:00Z' end-period: '2015-10-04T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3778000292 dns-udp-queries-received-ipv6: 294871546 dns-tcp-queries-received-ipv4: 28619304 dns-tcp-queries-received-ipv6: 383202 dns-udp-responses-sent-ipv4: 3718704541 dns-udp-responses-sent-ipv6: 293440177 dns-tcp-responses-sent-ipv4: 28636725 dns-tcp-responses-sent-ipv6: 384798