--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6267925254 dns-udp-queries-received-ipv6: 1050670250 dns-tcp-queries-received-ipv4: 247177158 dns-tcp-queries-received-ipv6: 66826516 dns-udp-responses-sent-ipv4: 6052479096 dns-udp-responses-sent-ipv6: 1025776003 dns-tcp-responses-sent-ipv4: 244180953 dns-tcp-responses-sent-ipv6: 66729770