--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5560836521 dns-udp-queries-received-ipv6: 1348237514 dns-tcp-queries-received-ipv4: 321575552 dns-tcp-queries-received-ipv6: 152961487 dns-udp-responses-sent-ipv4: 5572491999 dns-udp-responses-sent-ipv6: 1369100097 dns-tcp-responses-sent-ipv4: 310191291 dns-tcp-responses-sent-ipv6: 156910127