--- version: rssac002v3 service: a.root-servers.net start-period: '2019-05-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6068216608 dns-udp-queries-received-ipv6: 910787623 dns-tcp-queries-received-ipv4: 188575319 dns-tcp-queries-received-ipv6: 28053871 dns-udp-responses-sent-ipv4: 5936236415 dns-udp-responses-sent-ipv6: 910317578 dns-tcp-responses-sent-ipv4: 185673191 dns-tcp-responses-sent-ipv6: 28700296