--- version: rssac002v3 service: d.root-servers.net start-period: '2019-01-21T00:00:00Z' end-period: '2019-01-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6631015525 dns-udp-queries-received-ipv6: 1416736158 dns-tcp-queries-received-ipv4: 245851779 dns-tcp-queries-received-ipv6: 42292825 dns-udp-responses-sent-ipv4: 6630997188 dns-udp-responses-sent-ipv6: 1416624162 dns-tcp-responses-sent-ipv4: 245579782 dns-tcp-responses-sent-ipv6: 42208347