--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4583427615 dns-udp-queries-received-ipv6: 346989084 dns-tcp-queries-received-ipv4: 109414879 dns-tcp-queries-received-ipv6: 15132788 dns-udp-responses-sent-ipv4: 4577069683 dns-udp-responses-sent-ipv6: 346872184 dns-tcp-responses-sent-ipv4: 111174516 dns-tcp-responses-sent-ipv6: 15179390