--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5946793050 dns-udp-queries-received-ipv6: 1196115119 dns-tcp-queries-received-ipv4: 140397132 dns-tcp-queries-received-ipv6: 29468097 dns-udp-responses-sent-ipv4: 5817591005 dns-udp-responses-sent-ipv6: 1195588833 dns-tcp-responses-sent-ipv4: 136190917 dns-tcp-responses-sent-ipv6: 30091115