--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6098241138 dns-udp-queries-received-ipv6: 763410993 dns-tcp-queries-received-ipv4: 228362645 dns-tcp-queries-received-ipv6: 68268921 dns-udp-responses-sent-ipv4: 5912533040 dns-udp-responses-sent-ipv6: 762724548 dns-tcp-responses-sent-ipv4: 225115410 dns-tcp-responses-sent-ipv6: 68462254