--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5364137326 dns-udp-queries-received-ipv6: 1407443620 dns-tcp-queries-received-ipv4: 310454511 dns-tcp-queries-received-ipv6: 96864074 dns-udp-responses-sent-ipv4: 5210756049 dns-udp-responses-sent-ipv6: 1405477410 dns-tcp-responses-sent-ipv4: 299016050 dns-tcp-responses-sent-ipv6: 96570187