--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5651116933 dns-udp-queries-received-ipv6: 1288557625 dns-tcp-queries-received-ipv4: 325215891 dns-tcp-queries-received-ipv6: 101761043 dns-udp-responses-sent-ipv4: 5567274578 dns-udp-responses-sent-ipv6: 1304923714 dns-tcp-responses-sent-ipv4: 309643267 dns-tcp-responses-sent-ipv6: 101694509