--- service: j.root-servers.net start-period: '2015-02-01T00:00:00Z' end-period: '2015-02-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2599476714 dns-udp-queries-received-ipv6: 297007328 dns-tcp-queries-received-ipv4: 24996334 dns-tcp-queries-received-ipv6: 4607666 dns-udp-responses-sent-ipv4: 2596512643 dns-udp-responses-sent-ipv6: 296796681 dns-tcp-responses-sent-ipv4: 24989202 dns-tcp-responses-sent-ipv6: 3512298