--- service: i.root-servers.net start-period: '2013-11-02T00:00:00Z' end-period: '2013-11-03T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1818602641 dns-udp-queries-received-ipv6: 110442045 dns-tcp-queries-received-ipv4: 4350211 dns-tcp-queries-received-ipv6: 185578 dns-udp-responses-sent-ipv4: 1876131656 dns-udp-responses-sent-ipv6: 117076790 dns-tcp-responses-sent-ipv4: 4355192 dns-tcp-responses-sent-ipv6: 194755