--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5587322491 dns-udp-queries-received-ipv6: 1172595644 dns-tcp-queries-received-ipv4: 279247964 dns-tcp-queries-received-ipv6: 116938328 dns-udp-responses-sent-ipv4: 5407302732 dns-udp-responses-sent-ipv6: 1171169409 dns-tcp-responses-sent-ipv4: 268353466 dns-tcp-responses-sent-ipv6: 117017134