--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5717188373 dns-udp-queries-received-ipv6: 1394887430 dns-tcp-queries-received-ipv4: 307122414 dns-tcp-queries-received-ipv6: 102605599 dns-udp-responses-sent-ipv4: 5713559041 dns-udp-responses-sent-ipv6: 1421676858 dns-tcp-responses-sent-ipv4: 295683589 dns-tcp-responses-sent-ipv6: 102427455