--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6347947975 dns-udp-queries-received-ipv6: 1169797923 dns-tcp-queries-received-ipv4: 161582530 dns-tcp-queries-received-ipv6: 33023236 dns-udp-responses-sent-ipv4: 6227197031 dns-udp-responses-sent-ipv6: 1168820671 dns-tcp-responses-sent-ipv4: 158163900 dns-tcp-responses-sent-ipv6: 34135769