--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5877518813 dns-udp-queries-received-ipv6: 1165281739 dns-tcp-queries-received-ipv4: 285052797 dns-tcp-queries-received-ipv6: 112909934 dns-udp-responses-sent-ipv4: 5691414444 dns-udp-responses-sent-ipv6: 1163811665 dns-tcp-responses-sent-ipv4: 277045190 dns-tcp-responses-sent-ipv6: 113353018