--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6086572321 dns-udp-queries-received-ipv6: 1311575638 dns-tcp-queries-received-ipv4: 210374290 dns-tcp-queries-received-ipv6: 31905163 dns-udp-responses-sent-ipv4: 5954972277 dns-udp-responses-sent-ipv6: 1310587129 dns-tcp-responses-sent-ipv4: 207478046 dns-tcp-responses-sent-ipv6: 32629819