--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6089028702 dns-udp-queries-received-ipv6: 1203655594 dns-tcp-queries-received-ipv4: 296888256 dns-tcp-queries-received-ipv6: 120375153 dns-udp-responses-sent-ipv4: 5918812972 dns-udp-responses-sent-ipv6: 1202160146 dns-tcp-responses-sent-ipv4: 285924449 dns-tcp-responses-sent-ipv6: 120809477