--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5781994179 dns-udp-queries-received-ipv6: 1217389006 dns-tcp-queries-received-ipv4: 281967298 dns-tcp-queries-received-ipv6: 120305772 dns-udp-responses-sent-ipv4: 5597137382 dns-udp-responses-sent-ipv6: 1215957148 dns-tcp-responses-sent-ipv4: 271752324 dns-tcp-responses-sent-ipv6: 120417315