--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5549389606 dns-udp-queries-received-ipv6: 1357542110 dns-tcp-queries-received-ipv4: 292121027 dns-tcp-queries-received-ipv6: 101436549 dns-udp-responses-sent-ipv4: 5411352126 dns-udp-responses-sent-ipv6: 1363472398 dns-tcp-responses-sent-ipv4: 282585055 dns-tcp-responses-sent-ipv6: 101388373