--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5633712292 dns-udp-queries-received-ipv6: 1395198214 dns-tcp-queries-received-ipv4: 316449646 dns-tcp-queries-received-ipv6: 119908961 dns-udp-responses-sent-ipv4: 5638254863 dns-udp-responses-sent-ipv6: 1429168549 dns-tcp-responses-sent-ipv4: 303159331 dns-tcp-responses-sent-ipv6: 122556764