--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4404972147 dns-udp-queries-received-ipv6: 1031898446 dns-tcp-queries-received-ipv4: 268615294 dns-tcp-queries-received-ipv6: 89630093 dns-udp-responses-sent-ipv4: 4264202345 dns-udp-responses-sent-ipv6: 1029919246 dns-tcp-responses-sent-ipv4: 261507937 dns-tcp-responses-sent-ipv6: 89566222