--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3228421811 dns-udp-queries-received-ipv6: 396811959 dns-tcp-queries-received-ipv4: 143671317 dns-tcp-queries-received-ipv6: 15199021 dns-udp-responses-sent-ipv4: 3224574567 dns-udp-responses-sent-ipv6: 396775587 dns-tcp-responses-sent-ipv4: 143520624 dns-tcp-responses-sent-ipv6: 15334447