--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3297005143 dns-udp-queries-received-ipv6: 408123478 dns-tcp-queries-received-ipv4: 144803462 dns-tcp-queries-received-ipv6: 15985120 dns-udp-responses-sent-ipv4: 3290525111 dns-udp-responses-sent-ipv6: 408104769 dns-tcp-responses-sent-ipv4: 144497174 dns-tcp-responses-sent-ipv6: 16100878