--- version: rssac002v3 service: a.root-servers.net start-period: '2019-03-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6355133245 dns-udp-queries-received-ipv6: 861201658 dns-tcp-queries-received-ipv4: 184817678 dns-tcp-queries-received-ipv6: 36617318 dns-udp-responses-sent-ipv4: 6223176974 dns-udp-responses-sent-ipv6: 860635491 dns-tcp-responses-sent-ipv4: 181085652 dns-tcp-responses-sent-ipv6: 34148750