--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4978293597 dns-udp-queries-received-ipv6: 1172281255 dns-tcp-queries-received-ipv4: 290604856 dns-tcp-queries-received-ipv6: 91180374 dns-udp-responses-sent-ipv4: 4820811234 dns-udp-responses-sent-ipv6: 1169996238 dns-tcp-responses-sent-ipv4: 279615957 dns-tcp-responses-sent-ipv6: 91106697