--- service: j.root-servers.net start-period: '2015-04-12T00:00:00Z' end-period: '2015-04-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2826012341 dns-udp-queries-received-ipv6: 303880486 dns-tcp-queries-received-ipv4: 20688915 dns-tcp-queries-received-ipv6: 4891056 dns-udp-responses-sent-ipv4: 2756249755 dns-udp-responses-sent-ipv6: 303950458 dns-tcp-responses-sent-ipv4: 20299729 dns-tcp-responses-sent-ipv6: 4585067