--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5637906377 dns-udp-queries-received-ipv6: 1147923351 dns-tcp-queries-received-ipv4: 286776953 dns-tcp-queries-received-ipv6: 88566809 dns-udp-responses-sent-ipv4: 5455937459 dns-udp-responses-sent-ipv6: 1146408061 dns-tcp-responses-sent-ipv4: 273542805 dns-tcp-responses-sent-ipv6: 88943945