--- service: i.root-servers.net start-period: '2013-08-30T00:00:00Z' end-period: '2013-08-31T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2209060004 dns-udp-queries-received-ipv6: 144276965 dns-tcp-queries-received-ipv4: 4987579 dns-tcp-queries-received-ipv6: 165715 dns-udp-responses-sent-ipv4: 2166634501 dns-udp-responses-sent-ipv6: 144246819 dns-tcp-responses-sent-ipv4: 4954152 dns-tcp-responses-sent-ipv6: 166631