--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5613368923 dns-udp-queries-received-ipv6: 1179998012 dns-tcp-queries-received-ipv4: 276964906 dns-tcp-queries-received-ipv6: 93672816 dns-udp-responses-sent-ipv4: 5465490026 dns-udp-responses-sent-ipv6: 1178438458 dns-tcp-responses-sent-ipv4: 268231803 dns-tcp-responses-sent-ipv6: 94273733