--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5391841009 dns-udp-queries-received-ipv6: 1164813325 dns-tcp-queries-received-ipv4: 301450323 dns-tcp-queries-received-ipv6: 100678824 dns-udp-responses-sent-ipv4: 5388755866 dns-udp-responses-sent-ipv6: 1195425063 dns-tcp-responses-sent-ipv4: 292675684 dns-tcp-responses-sent-ipv6: 100517524