--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5947353580 dns-udp-queries-received-ipv6: 1112033465 dns-tcp-queries-received-ipv4: 219406456 dns-tcp-queries-received-ipv6: 76417994 dns-udp-responses-sent-ipv4: 5791673180 dns-udp-responses-sent-ipv6: 1111453330 dns-tcp-responses-sent-ipv4: 216117961 dns-tcp-responses-sent-ipv6: 76521396