--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3493650804 dns-udp-queries-received-ipv6: 412552361 dns-tcp-queries-received-ipv4: 160923161 dns-tcp-queries-received-ipv6: 15035132 dns-udp-responses-sent-ipv4: 3491204728 dns-udp-responses-sent-ipv6: 412503973 dns-tcp-responses-sent-ipv4: 160843516 dns-tcp-responses-sent-ipv6: 15156668