--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5681164693 dns-udp-queries-received-ipv6: 1265521946 dns-tcp-queries-received-ipv4: 283952106 dns-tcp-queries-received-ipv6: 91194585 dns-udp-responses-sent-ipv4: 5529543954 dns-udp-responses-sent-ipv6: 1263810737 dns-tcp-responses-sent-ipv4: 274554334 dns-tcp-responses-sent-ipv6: 91714587