--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6156551153 dns-udp-queries-received-ipv6: 1185534970 dns-tcp-queries-received-ipv4: 305716805 dns-tcp-queries-received-ipv6: 119898853 dns-udp-responses-sent-ipv4: 5987822775 dns-udp-responses-sent-ipv6: 1183345763 dns-tcp-responses-sent-ipv4: 292280097 dns-tcp-responses-sent-ipv6: 120372330