--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3168354404 dns-udp-queries-received-ipv6: 380643827 dns-tcp-queries-received-ipv4: 104737170 dns-tcp-queries-received-ipv6: 17540548 dns-udp-responses-sent-ipv4: 3086408593 dns-udp-responses-sent-ipv6: 380243046 dns-tcp-responses-sent-ipv4: 102171454 dns-tcp-responses-sent-ipv6: 17606548