--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4344648323 dns-udp-queries-received-ipv6: 381636656 dns-tcp-queries-received-ipv4: 113227142 dns-tcp-queries-received-ipv6: 15609276 dns-udp-responses-sent-ipv4: 4337550447 dns-udp-responses-sent-ipv6: 381517131 dns-tcp-responses-sent-ipv4: 115463959 dns-tcp-responses-sent-ipv6: 15658771