--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4830449601 dns-udp-queries-received-ipv6: 1053905943 dns-tcp-queries-received-ipv4: 307272424 dns-tcp-queries-received-ipv6: 95441094 dns-udp-responses-sent-ipv4: 4834219468 dns-udp-responses-sent-ipv6: 1078237823 dns-tcp-responses-sent-ipv4: 292042712 dns-tcp-responses-sent-ipv6: 95351931