--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5642723657 dns-udp-queries-received-ipv6: 1330644324 dns-tcp-queries-received-ipv4: 314701894 dns-tcp-queries-received-ipv6: 143138201 dns-udp-responses-sent-ipv4: 5634880434 dns-udp-responses-sent-ipv6: 1353496245 dns-tcp-responses-sent-ipv4: 304038228 dns-tcp-responses-sent-ipv6: 144566688