--- version: rssac002v3 service: a.root-servers.net start-period: '2020-02-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7002386849 dns-udp-queries-received-ipv6: 1073049565 dns-tcp-queries-received-ipv4: 321075901 dns-tcp-queries-received-ipv6: 72711467 dns-udp-responses-sent-ipv4: 6754903914 dns-udp-responses-sent-ipv6: 1059826931 dns-tcp-responses-sent-ipv4: 306650822 dns-tcp-responses-sent-ipv6: 72689320