--- version: rssac002v3 service: m.root-servers.net start-period: '2019-12-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3590112528 dns-udp-queries-received-ipv6: 666782385 dns-udp-responses-sent-ipv4: 3340842713 dns-udp-responses-sent-ipv6: 604561343 dns-tcp-queries-received-ipv4: 220647024 dns-tcp-queries-received-ipv6: 86203598 dns-tcp-responses-sent-ipv4: 220623061 dns-tcp-responses-sent-ipv6: 86399115