--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6208990841 dns-udp-queries-received-ipv6: 958693728 dns-tcp-queries-received-ipv4: 248971985 dns-tcp-queries-received-ipv6: 70026119 dns-udp-responses-sent-ipv4: 6011436865 dns-udp-responses-sent-ipv6: 950270613 dns-tcp-responses-sent-ipv4: 246589557 dns-tcp-responses-sent-ipv6: 70056625