--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5206428055 dns-udp-queries-received-ipv6: 1246730626 dns-tcp-queries-received-ipv4: 265364578 dns-tcp-queries-received-ipv6: 91546234 dns-udp-responses-sent-ipv4: 5063537479 dns-udp-responses-sent-ipv6: 1244449168 dns-tcp-responses-sent-ipv4: 257967399 dns-tcp-responses-sent-ipv6: 91509495