--- service: i.root-servers.net start-period: '2015-09-02T00:00:00Z' end-period: '2015-09-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4059190928 dns-udp-queries-received-ipv6: 279445813 dns-tcp-queries-received-ipv4: 27573496 dns-tcp-queries-received-ipv6: 412422 dns-udp-responses-sent-ipv4: 5619274321 dns-udp-responses-sent-ipv6: 279427563 dns-tcp-responses-sent-ipv4: 27590560 dns-tcp-responses-sent-ipv6: 415760