--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6200183355 dns-udp-queries-received-ipv6: 1298812899 dns-tcp-queries-received-ipv4: 168926461 dns-tcp-queries-received-ipv6: 31808241 dns-udp-responses-sent-ipv4: 6054902410 dns-udp-responses-sent-ipv6: 1297508684 dns-tcp-responses-sent-ipv4: 165989342 dns-tcp-responses-sent-ipv6: 32397855