--- service: i.root-servers.net start-period: '2015-10-16T00:00:00Z' end-period: '2015-10-17T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4324468343 dns-udp-queries-received-ipv6: 323315057 dns-tcp-queries-received-ipv4: 29733919 dns-tcp-queries-received-ipv6: 529572 dns-udp-responses-sent-ipv4: 4255667232 dns-udp-responses-sent-ipv6: 323304148 dns-tcp-responses-sent-ipv4: 29797699 dns-tcp-responses-sent-ipv6: 532174