--- version: rssac002v3 service: a.root-servers.net start-period: '2017-09-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3900270702 dns-udp-queries-received-ipv6: 434892477 dns-tcp-queries-received-ipv4: 149741971 dns-tcp-queries-received-ipv6: 11215798 dns-udp-responses-sent-ipv4: 3895993354 dns-udp-responses-sent-ipv6: 434797131 dns-tcp-responses-sent-ipv4: 149411768 dns-tcp-responses-sent-ipv6: 11326873