--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3556005643 dns-udp-queries-received-ipv6: 328611660 dns-tcp-queries-received-ipv4: 104685769 dns-tcp-queries-received-ipv6: 14562944 dns-udp-responses-sent-ipv4: 3551556354 dns-udp-responses-sent-ipv6: 328546629 dns-tcp-responses-sent-ipv4: 105329007 dns-tcp-responses-sent-ipv6: 14606220