--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5611439574 dns-udp-queries-received-ipv6: 1343629260 dns-tcp-queries-received-ipv4: 311504412 dns-tcp-queries-received-ipv6: 100856888 dns-udp-responses-sent-ipv4: 5493871647 dns-udp-responses-sent-ipv6: 1371700365 dns-tcp-responses-sent-ipv4: 300264455 dns-tcp-responses-sent-ipv6: 100930335