--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6408455663 dns-udp-queries-received-ipv6: 1056184035 dns-tcp-queries-received-ipv4: 248113243 dns-tcp-queries-received-ipv6: 67613021 dns-udp-responses-sent-ipv4: 6199209620 dns-udp-responses-sent-ipv6: 1033493654 dns-tcp-responses-sent-ipv4: 245262982 dns-tcp-responses-sent-ipv6: 67610639