--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4613963588 dns-udp-queries-received-ipv6: 362729718 dns-tcp-queries-received-ipv4: 109129274 dns-tcp-queries-received-ipv6: 15527635 dns-udp-responses-sent-ipv4: 4584661330 dns-udp-responses-sent-ipv6: 362663577 dns-tcp-responses-sent-ipv4: 109352979 dns-tcp-responses-sent-ipv6: 15560646