--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5662559993 dns-udp-queries-received-ipv6: 1149507880 dns-tcp-queries-received-ipv4: 310120806 dns-tcp-queries-received-ipv6: 105586679 dns-udp-responses-sent-ipv4: 5486865692 dns-udp-responses-sent-ipv6: 1147074442 dns-tcp-responses-sent-ipv4: 297079111 dns-tcp-responses-sent-ipv6: 105792565