--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4353213172 dns-udp-queries-received-ipv6: 747277880 dns-tcp-queries-received-ipv4: 138152062 dns-tcp-queries-received-ipv6: 31205930 dns-udp-responses-sent-ipv4: 4261014696 dns-udp-responses-sent-ipv6: 746779684 dns-tcp-responses-sent-ipv4: 136003422 dns-tcp-responses-sent-ipv6: 30768376