--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4905602514 dns-udp-queries-received-ipv6: 996759349 dns-tcp-queries-received-ipv4: 285964658 dns-tcp-queries-received-ipv6: 98953196 dns-udp-responses-sent-ipv4: 4726206130 dns-udp-responses-sent-ipv6: 994638153 dns-tcp-responses-sent-ipv4: 275266983 dns-tcp-responses-sent-ipv6: 99368011