--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4129984479 dns-udp-queries-received-ipv6: 437311206 dns-tcp-queries-received-ipv4: 132933013 dns-tcp-queries-received-ipv6: 18198305 dns-udp-responses-sent-ipv4: 3979910625 dns-udp-responses-sent-ipv6: 436970524 dns-tcp-responses-sent-ipv4: 130466821 dns-tcp-responses-sent-ipv6: 18273754