--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4091256354 dns-udp-queries-received-ipv6: 372588746 dns-tcp-queries-received-ipv4: 106348463 dns-tcp-queries-received-ipv6: 15246604 dns-udp-responses-sent-ipv4: 4083384859 dns-udp-responses-sent-ipv6: 372463957 dns-tcp-responses-sent-ipv4: 106571146 dns-tcp-responses-sent-ipv6: 15312904